Paper CS - NNS-2015 - Universitas Sebelas Maret

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TABLE OF CONTENTS
Cover ........................................................................................................................ 1
Table of Contents ................................................................................................... 2
Welcome Message ................................................................................................... 3
Indonesia in Brief .................................................................................................... 4
Surakarta in Brief ................................................................................................... 5
Venue and Transportation
Sunan Hotel ............................................................................................................ 7
Floor Plan ................................................................................................................ 9
Transportation ......................................................................................................... 10
Necessary Information
Passport and Visa ..................................................................................................... 12
Airports and Airport Tax ....................................................................................... 13
Currency .................................................................................................................. 13
Electricity .................................................................................................................. 14
Language .................................................................................................................. 14
Numbers ................................................................................................................... 15
IDD (International Direct Dialing) ......................................................................... 15
Hospital and Drug Store ......................................................................................... 15
Conference in Brief
Steering Commitee .................................................................................................. 16
Organizing Commitee ............................................................................................. 16
Oral Presentation Guidelines .................................................................................. 18
Conference Informations......................................................................................... 21
Conference Program ............................................................................................... 22
Abstract List ............................................................................................................ 24
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WELCOME MESSAGE
On behalf Organizing, Steering, and Technical Program
Committee, it is my privilege to welcome you to the 6th
Nanoscience and Nanotechnology Symposium (NNS) 2015.
Thank you for joining us for this event. The 6th NNS 2015
organized by Sebelas Maret University in collaboration with
Institute Technology Bandung (ITB), and the American
Institute of Physics (AIP).
Nanotechnology is the key of forefront technology in
modern live. The application of nanomaterial can be found in
Dr. Wahyudi Sutopo, ST., M.Si
General Chairman
our daily products to space application devices. The ability to
custom a product with high performance properties is the
advantage of nanotechnology.
In addition, the new property of nanomaterial that is not found in its bulk size
increases research interest in this area. The new finding and new application of
nanotechnology therefore requires an academic and multidisciplinary scientific education and
researches.
The conference is expected to be an effective platform for the three axis of triple helix
namely ABG (Academic–Business–Government) forum, to share ideas and to present the
works of scientists, engineers, educators and students. Speakers from Germany, India,
Indonesia, Japan, Korea, Malaysia, and Saudi Arabia will be attend to this conference.
In closing, It was our great honor and pleasure to accept the responsibilities and
challenges of Conference General Chair. We hope that the conference will be stimulating,
informative, enjoyable and fulfilling experience to all who attend it.
3
INDONESIA IN BRIEF
Indonesia is the world's fourth-most-populous country and famous as an archipelago
comprising thousands of islands. Indonesia consists of hundreds of distinct native ethnic and
linguistic groups. The largest ethnic group are the Javanese. A shared identity has developed,
defined by a national language, ethnic diversity, religious pluralism.
Indonesia is one of the very few nations on earth to span such a broad spectrum of
world history and human civilization from its ancient Hindu-Javanese temples to Bali’s
modern luxury resorts, and from the stone-age lifestyle in West Papua to immense metropolis
that is Jakarta. The population of nearly 234 million people is derived from 300 ethnic group
people who speak over 250 distinct languages. The common element is the national language
of Bahasa Indonesia.
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SOLO, THE SPIRIT OF JAVA
Solo is a city full history and cultural nuances that have the proud tradition of Java
society, a place that will make you amazed with a variety of Javanese cultural heritage
attractions.
Solo or also called the city of Surakarta is an ancient city built by Paku Buwana II.
The history of this city can’t be escaped with the history of Keraton Surakarta Sultanate who
was the successor of the Islamic Mataram kingdom. Surakarta is known as a center and core
of ancient Javanese culture because of political and developed center ofJavanese tradition.
The initial prosperity from the 19th century has been encouraging the developed various of
Java literature, dance, food, clothing, architecture, and culture.
Solo is known as a city that never sleeps, there is always something interesting you
can find in Solo. Solo has been known as a favourite tourist destination for local and
international tourists.
In this city, you can visit 2 palaces of Java, they are Sunan Surakarta palace and
Prince Mangkunegara palace. You can travel in this old city with carriage named andong or
pedicab while see the old building and labyrinth along the palace.
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Solo society always keeps its local culture. Therefore, it isn’t surprising that Javanese
language is used as a standard of national language. The dance area is Bedhaya and
Srimpimasih preserved in Solo Palace. The most famous Batik in Solo are Batik Keris and
Batik Danarhadi. We, as citizens, are proud of batik Solo, even this city has its own label
"Solo, The Spirit of Java” also the nickname"The City of Batik".
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VENUE AND TRANSPORTATION
SUNAN HOTEL
The Sunan Hotel Solo was established in 2007 by PT.Graha Mulya Wirastama, which
constitutes to be the Owning Company of The Sunan Hotel Solo. It has the form of Limited
Liability Company.
Starting 2007, The Sunan Hotel Solo offers not only lodging service, to improve
service to the guests, but the Management also provides supporting facilities such us Coffee
Shop, Meeting Room, Music Room, Fitness Center, and Ramen corner.
The Sunan Hotel Solo is located in the west side of Surakarta, 4 km from
Mangkunegaran Palace, 5 km from the Sunan’s Palace or Kraton, 5 km from Goverment
Center, 5 km from the famous shopping area of Pasar Klewer. It only takes 15 munites from
Adi Sumarmo International Airport and 6 minutes from Balapan Train Station by Taxi.
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The Sunan Hotel Solo offers a whole range of international standard facilities to
business and pleasure for travelers.Its business facilities, conference and banqueting service
are organized with full attention and “extra care”. Total numbers of room are 204, consisting
of 1 President Suite, 1 Sunan Suite, 4 Suite, 10 Junior Suite Rooms, 70 Executive Business
Room and 118 Deluxe rooms. Get a special price before 30th Oct 2015 for deluxe room only
797.280 IDR 650.000 IDR.
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FLOOR PLAN
*)Triwindu Rooms are on 4th floor
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TRANSPORTATION
Travel from entry points to the conference venue (The Sunan Hotel Solo). The Sunan
Hotel Solo is located in city center of Surakarta, Central Java Indonesia. To get conference
venue, there are three options of transportation, like bus, plane and train.
1. From Adi Sumarmo Airport (Surakarta):
The most convenient way to reach The Sunan Hotel Solo from Adi Sumarmo Airport
is to take an airport taxi. Taxis leaving from the airport operate with argo system. The price
about 50.000 IDR. It’s about 10,4 KM from Adi Sumarmo Airport to The Sunan Hotel Solo.
Another alternative is by taking an Batik Solo Trans (BST) bus to The Sunan Hotel
Solo directly from the airport. Bus ticket can be purchased in the BST bus for 10.000 IDR. To
get direction to The Sunan Hotel Bus, you must stop the bus in terminal near Panti Waluyo
it’s only take 6 minutes if you go there on foot or 500 meter ahead. The another alternate is
take commercial motorcycle to The Sunan Hotel Solo for 5.000 – 10.000 IDR.
2. From Tirtonadi Terminal (Surakarta):
Public taxi is the best alternative to go to The Sunan Hotel Solo from Tirtonadi. The
price of argo system is 375 IDR per 100 meters. It’s about 5 KM from Tirtonadi Terminal to
The Sunan Hotel Solo.
3. From Purwosari Station (Surakarta):
From Purwosari to The Sunan Hotel Solo is just 1,1 KM away. From there you can
use Becak (Traditional Transportation of Indonesia) to go to The Sunan Hotel Solo. Another
alternative is to take commercial motor cycle in from of station.
4. From Jebres Station (Surakarta):
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Another alternative to reach The Sunan Hotel Solo from Solo Balapan Station is by
taking an Batik Solo Trans (corridor 1) bus to The Sunan Hotel Solo directly from the
Station. Bus ticket can be purchased in the BST bus for 4.500 IDR. To get direction to The
Sunan Hotel Bus, you must stop the bus in terminal near Panti Waluyo it’s only take 6
minutes if you go there on foot or 500 meter ahead. The another alternate is take commercial
motorcycle to The Sunan Hotel Solo for 5.000 – 10.000 IDR.
5. From Solo Balapan Station (Surakarta):
Last alternative to reach The Sunan Hotel Solo from Solo Balapan Station is by taking
an Batik Solo Trans (corridor 2) bus to The Sunan Hotel Solo directly from the Station. Bus
ticket can be purchased in the BST bus for 4.500 IDR. To get direction to The Sunan Hotel
Bus, you must stop the bus in terminal near Panti Waluyo it’s only take 6 minutes if you go
there on foot or 500 meter ahead. The another alternate is take commercial
motorcycle to The Sunan Hotel Solo for 5.000 – 10.000 IDR.
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NECESSARY INFORMATION
PASSPORT AND VISA
Passport must be valid for minimum six months. Visa On Arrival (VOA) is granted to
foreigners who intend to visit Indonesia for tourism, social and culture, business or
government duties. This Visa On Arrival is granted to foreign nationals who fulfill the
requirements and conditions upon arrival in Indonesia. The following is the list of countries
that can apply for VOA in Indonesia.
1. Algeria
22. Greece
43. New Zealand
2. Arab Emirate
23. Hungary
44. Oman
3. Argentina
24. Iceland
45. Panama
4. Australia
25. India
46. Poland
5. Austria
26. Ireland
47. Portugal
6. Bahrain
27. Italy
48. Qatar
7. Belgium
28. Tunisia
49. Romania
8. Brazil
29. Japan
50. Russia
9. Bulgaria
30. Kuwait
51. Saudi Arabia
10. Cambodia
31. Laos
52. Slovakia
11. Canada
32. Latvia
53. Slovenia
12. China
33. Libya
54. South Africa
13. Cyprus
34. Liechtenstein
55. South Korea
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14. Czech Republic
35. Lithuania
56. Spain
15. Denmark
36. Luxembourg
57. Suriname
16. Egypt
37. Malidives
58. Sweden
17. Estonia
38. Malta
59. Switzerland
18. Fiji
39. Mexico
60. Taiwan
19. Finland
40. Netherland
61. United State of America
20. France
41. Monaco
62. United Kingdom
21. Germany
42. Norway
63. United Arab Emirate
AIRPORTS AND AIRPORT TAX
Adi Sumarmo International Airport (Indonesian: Bandar Udara Internasional Adi
Sumarmo) (IATA: SOC, ICAO: WAHQ), is an airport in Solo/Surakarta, Central Java,
Indonesia. It is located 14 km north of the city.It was the sole international level airport in
Southern Central Java, until the upgrading of the Adisucipto International Airport in
Yogyakarta and the Achmad Yani International Airport in Semarang.
An airport departure tax of 100.000 IDR is charged by the airport authority for
travelers on international flights and 30.000 IDR for domestic flights. The tax must be paid in
Rupiah.
CURRENCY
Only Rupiah (Indonesian currency) is acceptable at regular stores and restaurants.
Certain foreign currencies and major credit cards are accepted by most hotels, restaurants and
souvenirs shops. The exchange rates 1 USD is about 13.600 IDR
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ELECTRICITY
The electricity used in Indonesia is 220 V at 50 Hertz. Standard electrical port in
Indonesia is CEE7 version. We recommend you to bring a converter port.
LANGUAGE
Bahasa Indonesia is the national language. Some common phrases and words:
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ENGLISH
INDONESIA
Good morning (until 10 am)
Selamat pagi
Good afternoon (until 3 pm)
Selamat siang
Good afternoon ( between 3–6 pm)
Selamat sore
Good evening/Good night
Selamat malam/selamat tidur
How are you?
Apa kabar?
I am fine
Baik-baik saja
Do you have a room to rent?
Ada kamar kosong?
Where are you going?
Anda mau kemana?
How much (does it cost)?
Berapa harganya?
What time does the shop open?
Jam berapa toko buka?
Thank you
Terima kasih
My pleasure/you are welcome
Terima kasih kembali/sama-sama
Sit down, please
Silahkan duduk
Come in, please
Silahkan masuk
Original, authentic
Asli
Clean
Bersih
Cold
Dingin
To eat
Makan
To drink
Minum
Excuse me
Permisi
NUMBERS
1 Satu
11 Sebelas
100 Seratus
2 Dua
12 Duabelas
101 Seratus Satu
3 Tiga
13 Tiga Belas
110 Seratus Sepuluh
4 Empat
14 Empat Belas
200 Dua Ratus
5 Lima
15 Lima Belas
1,000 Seribu
6 Enam
20 Dua Puluh
2,000 Dua Ribu
7 Tujuh
21 Dua Puluh Satu
10,000 Sepuluh Ribu
8 Delapan
30 Tiga Puluh
20,000 Dua Puluh Ribu
9 Sembilan
40 Empat Puluh
1,000,000 Satu Juta
10 Sepuluh
50 Lima Puluh
2,000,000 Dua Juta
IDD (International Direct Dialing)
Country Code = Indonesia: +62
City Code
= Surakarta: +62-271
HOSPITAL AND DRUG STORE
HOSPITAL
Panti Waluyo Hospital Surakarta
Ahmad Yani 1, Surakarta
T : +62 271 712077
DRUG STORE
Kimia Farma
Adi Sucipto 70, Surakarta
T : +62 271 718014
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CONFERENCE IN BRIEF
Steering Committee:
Chairman
: Agus Purwanto
Vice
: 1. Mikrajudin Abdullah (ITB)
2. Heru Setyawan (ITS)
Advisory Board Committee:
1. Rektor UNS
2. Ketua LPPM UNS
3. Kikuo Okuyama (Hiroshima University, JAPAN)
4. Seung Bin Park (KAIST, Korea)
5. Wendelin Stark (ETH, Switzerland)
6. Pratim Biswas (Washington University St. Louis, USA)
7. I Wuled Lenggoro (TUAT, Japan)
8. Khairurrijal (ITB, Indonesia)
Organizing Committee
Chairman
:
Wahyudi Sutopo
Vice
:
Fitria Rahmawati
Risa Suryana
Technical Program
:
Adrian Nur
General secretary
:
Endah Retno D
Treasury
:
Inayati
Program
:
Taufiq Al Makmun
Logistic
:
Arif Jumari
Publicity and Website
:
Yudi S.
Committee Members:
Prof. Mikrajuddin Abdullah (ITB)
Prof Heru Setyawan (ITS)
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Dr. Ferry Iskandar (ITB)
Dr. Hendri Widiyandari (UNDIP)
Dr. Camelia Panatarani (UNPAD)
Dr. I Made Joni (UNPAD)
Dr. Hidayat (UNPAD)
Dr. Widiyastuti (ITS)
Dr. M Miftahul Munir (ITB)
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ORAL PRESENTATION GUIDELINES
GENERAL
1. Each oral presentation will be 20 minutes long (maximum) followed by Q & A.
Please refer to conference book or schedule to find your assigned schedule and
session. The presentation format is in power point presentation (ppt and pptx ) and
pdf.
2. The author(s) are expected to:
a. Be ready prior to the session, in the assigned room and session.
b. Present their paper appropriately: maximum 15 minutes for presentation,
followed by 5 minutes discussion.
c. Answer questions and interact as appropriate.
SETUP
Even though you have already sent your presentation file by email, it is important that
you are prepared to copy your presentation file in conference location.You can update your
file before 1 hour from the conference session at Registration Desk.
Suggestions for a good presentation
SLIDE DETAIL
Each slide should have a maximum of five points or short sentences. Slides should represent
summary points of your discussion rather than your verbal presentation in totality. Please
avoid using transitions between slides and within slides as these become distracting.
Number of slides
The duration of your presentation will determine the number of slides that is acceptable. As a
general rule, if your presentation takes 15 minutes in duration, 5 slides would be acceptable.
However, your presentation style may suggest a different time required each slide. Please
plan the slides carefully. Remember you’ll talk about your slides not read them.
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FONT
Font type and size is determined by personal preference. Basic fonts such as ‘times new
roman’ or arial are easy to read. A font size of 26-30 is acceptable.
Content
As described above, the content of your slides should be brief. Your presentation should have
a distinct introduction, body conclusion and acknowledgements

Title: your title slide should convey the message of your presentation. Additionally,
you should include the names of the authors, regardless of whether they are present or
not [1 slide].

Overview: your overview should outline the progression of your presentation. It is
purely a brief overview of what you’re going to discuss and in what order [1 slide].

Background: this slide should outline the current literature on the topic and provide a
rationale for undertaking the research or quality project. If the presentation relates to
an initiative or idea, the background should highlight how the problem was identified
[1 slide].

Objectives: this should outline what you hoped to achieve [1 slide]

Body: if you are presenting the findings of your research, the body of your
presentation should include: methods [1 slide], findings / Results [1 slide]. Depending
on the type of presentation, the body should include a maximum of three slides on the
discussion or main theme of your topic. If your presentation has in-depth findings
with multiple figures, tables and/or graphs, additional slides maybe required.

Conclusion: the conclusion should summarize the key points and objectives of your
presentation [1 slide].

Acknowledgements: If you received assistance from any funding bodies, individuals
or institutions, it is important that you acknowledge the assistance you received in
public [1 slide].

IMAGES AND ILLUSTRATIONS
Always check for the presence of copyright notices and watermarks on images
downloaded from the Internet or copied from another source. Copyright notices are not
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always visible on images, however, this does not mean that one does not exist. When in
doubt, you should seek written permission from the publisher before using any images or
illustrations in your conference presentation, as this will most definitely be required if you
submit your paper for Publication at a later stage. Additionally, if you are using personal
photographs, you will need to obtain written permission from all of the people whose identity
is visible in the photograph.
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CONFERENCE INFORMATIONS
Official Language
The official language of the conference is English. All presentations including discussion
shall be made in English.
Badges
All the participants are asked to wear their name badges in order to enter the session room.
Registration Desk
The Registration Desk is located in front of Grand Ballroom at 1st floor Sunan Hotel.
Lunch
Lunch will be served at Resto for all participants with Lunch Ticket.
Internet Connection
Wi-fi access will be available during the conference period.
Password : sunan
User name : hotel
Message Board
Any program changes or urgent announcements from the secretariat and person to person
messages will be posted on the Message Board located near the Registration Desk. Please
check the board occasionally.
Gala Dinner
Date & Time: Wednesday, 4th November 2015, 07.00 - 09.00 P.M.
Venue : Sumaryo Grand Ball Room
Dress Code: Informal / Batik
All registered participants are invited to attend gala dinner free of charge. A full course meal
and entertainment will be provided.
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CONFERENCE PROGRAM
TIME
08:00 ‐ 09:00
09:00 ‐ 09:05
09:05 ‐ 10:00
10:00 ‐ 12:00
12:00 ‐ 13:20
13:20 ‐ 13:40
13:40 ‐ 14:00
14:00 ‐ 14:20
14:20 ‐ 14:40
14:40 ‐ 15:00
15:00 ‐ 15:15
15:15 ‐ 15:45
15:45 ‐ 16:05
16:05 ‐ 16:25
16:25 ‐ 16:45
16:45 ‐ 17:05
17:05 ‐ 17:25
17:25 ‐ 17:45
19:00 ‐ 21:00
07:30 ‐ 08:30
08:00 ‐ 10:00
10:00 ‐ 10:15
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NNS D:
Nano optics,
Nanooptoelectronics,
Nanophotonics
DAY 1--Wednesday, Nov 4, 2015
REGISTRATION : FRONT DESK
OPENING CEREMONY : PLENARY ROOM
WELCOMING AND OPENING SPEECH : PLENARY ROOM
KEYNOTE SESIONS : PLENARY ROOM
PHOTO SESSION AND LUNCH
SESSION CHAIR
Inayati, ST., MT.,
Dr. Sperisa
Dr. Margono, ST.,
Mujtahid
PhD
Distantina
MT.
Kaavesina, ST.,
MT., PhD
NNS A:
Nanotechnology
in Energy
Application
NNS B:
NNS C:
Nanomaterial
Nano
Synthesis and biotechnology and
Characterization
Nanomedicine
Ballroom 2A
Ballroom 2B
CS - 4
CS - 6
CS - 89
CS - 30
CS - 49
CS - 3
CS - 7
CS - 8
CS - 9
CS - 13
Dr. Fitria
Rahmawati, MSi
Dr Agus
Supriyanto
S.Si,M.Si
Ballroom 2A
IS - 2
CS - 63
CS - 74
CS - 75
CS - 77
CS - 87
CS - 88
Ballroom 2B
IS - 1
CS - 19
CS - 26
CS - 27
CS - 29
CS - 36
CS - 39
Kono Room
CS - 15
CS - 16
CS - 18
CS - 20
CS - 21
BREAK
SESSION CHAIR
Dr. Eddy
Heraldy, M.Si
Kono Room
IS ‐ 8
CS - 22
CS - 23
CS - 32
CS - 33
CS - 38
CS - 40
GALA DINNER
NNS E:
Advanced
Materials
Dr. Eng. Risa
Suryana,
SSi. MSi
Triwindu 1
Triwindu 2
CS - 11
CS - 12
CS - 14
CS - 17
CS - 24
CS ‐ 1
CS ‐ 2
CS ‐ 25
CS ‐ 35
CS ‐ 37
Dr.rer.nat Witri
Wahyu Lestari
S.Si, M.Sc
Dr. Yofentina
Iriani, M.Si.,
S.S
Triwindu 1
IS - 6
CS - 28
CS - 31
CS - 44
CS - 58
CS - 62
CS - 69
Triwindu 2
IS - 4
CS - 42
CS - 47
CS - 52
CS - 56
CS - 64
CS - 65
DAY 2, Thursday, Nov 5, 2 015
REGISTRATION: FRONT DESK
KEYNOTE SESIONS : PLENARY ROOM
BREAK
10:15 ‐ 10:45
10:45 ‐ 11:05
11:05 ‐ 11:25
11:25 ‐ 11:45
11:45 ‐ 12:05
12:05 ‐ 13:00
13:00 ‐13:20
13:20 ‐ 13:40
13:40 ‐ 14:10
14:10 ‐ 14:30
14:30 ‐ 14:50
14:50 ‐ 15:10
15:10 ‐ 15:30
15:30 ‐ 15:40
Dr. Adrian Nur,
ST. MT.
Ballroom 2A
IS - 5
CS - 91
CS - 97
CS - 99
CS - 100
Dr. Sayekti
Wahyuningsih
M.Si
Ballroom 2A
CS - 101
CS - 102
CS - 103
CS - 112
CS - 115
CS - 116
CS - 117
SESSION CHAIR
Dr. Eng. Hendri Prof. Cari, M.A., Prof. Soeparmi,
Widyandari, M.Si.
PhD.
M.A., PhD
Kono Room
Triwindu 1
Triwindu 2
IS - 7
IS - 10
IS – 9
CS - 43
CS - 70
CS – 66
CS - 51
CS - 72
CS – 71
CS - 60
CS - 73
CS – 82
CS - 67
CS - 76
CS - 83
BREAK
SESSION CHAIR
Drs. Iwah Yahya, Dr. Tech Suyitno,, Dr. Triyono, ST. D. Danardono
Dwi Prija T.,
M.Si
ST., MT.
MT.
ST., MT., PhD
Ir. Arif Jumari,
MSc.
Ballroom 2B
IS -3
CS - 41
CS - 46
CS - 48
CS - 50
Ballroom 2B
CS - 53
CS - 54
CS - 55
CS - 57
CS - 59
CS - 61
CS - 119
CS - 120
Kono Room
CS - 68
CS - 78
CS - 79
CS - 10
CS - 92
CS - 93
CS - 121
Triwindu 1
CS - 80
CS - 81
CS - 86
CS - 96
CS - 94
CS - 95
CS - 122
Triwindu 2
CS - 84
CS - 85
CS - 98
CS - 113
CS - 114
CS - 105
CS - 118
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ABSTRACTS CODE LIST
Keynote Speakers
No
Abstract
Code
1
K-1
Prof. K. Okuyama
Nanoparticles Dispersion and Nanostructurization for Energy and
Environmental Applications
2
K-2
Dr. M. V. Reddy
Recent Advances on Nanotechnology in The Area of Energy Storage
3
K-3
Prof. Mikrajuddin Abdullah
Upscaled Reactor for Organic Pollutant Decomposition using
Titanium Dioxide Nanoparticles Under Solar Illumination
Speakers
Title
Invited Speakers
No
Abstract
Code
1
IS-1
Prof. Heru Setyawan
2
IS-2
Prof. Evvy Kartini
3
IS-3
Assc. Prof. S. Inasawa
4
IS-4
Assc. Prof. Saiful Amri bin Mazlan
5
IS-5
Dr. Sudaryanto
6
IS-6
Dr. Hendri Widiyandari
7
IS-7
Dr. Ratna Balqis
8
IS-8
Dr. I Made Joni
9
IS-9
Dr. Widiyastuti
10
IS-10
Dr. Fitria R
Speakers
Title
The Use of Bagasse Ash as a Silica Source for Nanosilicas and Their
Applications
Solid Electrolyte for Solid-State Batteries: Have Lithium-ion Batteries
Reached Their Technical Limit?
The Formation of Silicon Nano- and Micro-Materials via The Zinc
Reduction Reaction of SiCl4
A Overview of Nano Particles Utilization in Magnetorheological Fluids
Structure and Properties of Solid Polymer Electrolyte Based on
Chitosan and ZrO2 Nanoparticle for Lithium Ion Battery
Advanced Oxidation Process Using Photocatalyst Materials
Aerosol Synthesis of Hierarchical Nanostructured Carbon Particles
Using A Dual Polymer System
Development of High Scale Pulse Combustion Spray Pyrolysis System
Analysis of Carrier Gas Flow Rate Effect on Hydroxyapatite Particle
Formation in Ultrasonic Spray Pyrolysis
The Optical Properties and Photocatalytic Activity of CdS-ZnSTiO2/Graphite for Isopropanol Degradation Under Visible Light
Irradiation
Contributed Speakers
No
Abstract
Code
1
CS-1
B. Anggit Wicaksono, Ahmad Asrori
Nahrun, Nuryani, Budi Purnama
2
CS-2
Ismail, Nuryani, and Budi Purnama
3
CS-3
4
CS-4
5
CS-6
24
Speakers
Adrian Nur, Agus Purwanto, Arif
Jumari, Endah R. Dyartanti,
Sifa Dian Permata Sari, and Ita Nur
Hanifah
Endah R Dyartanti, Arif Jumari, Pepi
Wahidati, Yulaikha Aryani
and Agus Purwanto
Muhammad Arifin, Akfiny Hasdi
Aimon, Toto Winata, Mikrajuddin
Title
Low Frequency Magneto-Impedance Effects in Electrodeposited
Multilayer [Ni80Fe20/Cu]3 on Cu-Wire Substrates with Different Sample
Geometri
Influence of Sample Length to Magnetoimpedance Effect in
Electrodeposited [Cu/Ni80Fe20]3 Multilayer Wires at Low Frequency
Synthesis of TiO2 by Electrochemical Method from TiCl4 Solution as
Anode Material for Lithium-ion Batteries
Improving Lithium-Ion Battery Performances by Adding the Additive
of Fly Ash from Coal Combustion on Cathode Film
The Influence of reduced Graphene Oxide on Electrical Conductivity of
LiFePO4-Based Composite as Cathode Materials
No
Abstract
Code
Speakers
Title
Abdullah, and Ferry Iskandar
6
CS-7
Dianisa Khoirum Sandi, Agus
Supriyanto, Anif Jamaludin and
Yofentina Iriani
7
CS-8
Memik Dian Pusfitasari, Heru
Setyawan, and Samsudin Affandi
8
CS-9
9
CS-10
10
CS-11
11
CS-12
12
CS-13
13
CS-14
14
CS-15
15
CS-16
16
CS-17
17
CS-18
18
CS-19
Endang Susilowati, Maryani, and
Ashadi
Preparation and Characterization of Bandage Coated Silver-Chitosan
Nanocomposites for Antibacterial Wound Dressing Application
19
CS-20
Prabang Setyono, Aru Dewangga,
Hari
Setyanto
Emissions Mitigation of Co Toxic Gases Bioproduct Engineering Based
on Cincau Leaf (Cyclea Barbata Miers) and Water Hyacinth
(Eichhornia Crassipes ( Mart) Solms.) to Application in Motor Vehicle
Exhaust Emissions Test Pass Towards Environmentally Friendly
20
CS-21
Sunardi Partodikromo, Ashadi, Sentot Green Synthesis and Characterization of nano Zero Valent Iron from
Budi Rahardjo, and Inayati
the Banana Peel Extract and Ferrous Sulfate from Iron Scrap
21
CS-22
22
CS-23
23
CS-24
24
CS-25
25
CS-26
Erika L. Y. Nasution, Atika Ahab,
Ferry Iskandar, Bebeh W. Nuryahdin,
Freddy H., and Idam Arif
Endah R Dyartanti, I Nyoman
Widiasa, Agus Purwanto, and Heru
Susanto.
C. Cari, A. Suparmi, M. Yunianto, and
B. N. Pratiwi
A Suparmi, C Cari, Utama Alan Deta
and Beta Nur Pratiwi
Gatut Yudoyono, Vicran Zharvan,
Nur Ichzan, Rizqa Daniyati, Bachtera
Indarto, Yono Hadi Pramono,
Muhammad Zainuri, and Darminto
Darminto
A.H. Ramelan, S. Wahyuningsih, and
N. A. Rosyida
Nanik Dwi Nurhayati
Afiono Agung Prasetyo and Faradiba
Maharani
Umi Muflihatun Nurul Azizah,
Suryasatriya Trihandaru, Nur Aji
Wibowo
Sri Retno Dwi Ariani, Sabirin
Matsjeh, Mustofa Mustofa, and
Bambang Purwono
Nenni Mona Aruan, Ida Sriyanti,
Dhewa
Edikresnha, and Muhammad Miftahul
Munir
Venty Suryanti, Sri Hastuti, and Dwi
Pujiastuti
Ahmad Marzuki, Rudi Susanto, Cari
Cari, Adi Pramuda, and Wahyudi
Wahyudi
Ary Setyawan, Djoko Sarwono and
Rochim
Salprima Yudha S., Eka Angasa,
Totok Eka Suharto, Yuta Nishina,
Zulfikri Achid Mardlia, and Sipriyadi
The Influences of Mole Composition of Strontium (x) on Properties of
Barium Strontium Titanate (Ba1-xSrxTiO3) Prepared by Solid State
Reaction Method
Synthesis of Silica-Coated Magnetite Nanoparticles by Electrochemical
Method As Adsorbent for Metylene Blue Removal from Waste Water
Samples
Synthesis of Gadolinium Carbonate-Conjugated-Poly(ethylene)glycol
(Gd2(CO3)3@PEG) Particles via a Modified Solvothermal Method
Study on Characteristics of PVDF/Nano-Clay Composite Polymer
Electrolyte Using PVP as Pore-Forming Agent
Solution of D-dimensional Dirac Equation for Coulombic Potential
Using NU Method and Its Thermodynamics Properties
Solution of D-Dimensional Dirac Equation for Hyperbolic Tangent
Potential Using NU Method and Its Application in Material Properties
Influence of pH the Formulation TiO2 Powder Prepared by Coprecipitation of TiCl3 and The Photocatalytic Activity
Antocyanine Extracted from Hibiscus (Hibiscus rosa sinensis L.) as a
Photosensitizer on Nanostructured-TiO2 Dye Sensitized Solar Cells
Modification of Natural Matrics Lacs-Bagasse for Matric Composite
Films
Hepatitis C Virus-like Particles for Survivin-RNA Interference Delivery
System Targetting Hepatocellular Carcinoma
Micromagnetic Study of Exchange Interaction Effect on Magnetization
Reversal Mode of CoFeAl
Correlation of Fermentation Time with Genistein Content on Soybean
Tempe Production and Hepatoprotective Activity on Swiss Albino Mice
Composite Nanofibers from Annona muricata Linn Extract/Polyvinyl
Alcohol Systems as Antibacterial Wound Dressing
Evaluation of Biosurfactant Grown in Corn Oil by Rhodococcus
rhodochrous on Removing of Heavy Metal Ion from Aqueous Solution
Spectroscopic Properties of The Er3+-doped TeO2-ZnO-Bi2O3 Glasses
Design and Performance of Porous Concrete for Pervious Pavement
Application
The Scaevolafrutescen (Mill.) Krause Dried-Leaves Extract as A
Potential Natural Reduction System for Synthesis of Gold
Nanoparticles and The Product Evaluation for Antibacterial of
25
No
Abstract
Code
Speakers
Title
Eschericia coli
Effect of Concentration of Sodium Silicate Solution in The Synthesis of
Silica-Coated Magnetite Nanoparticles by Ultrasonication
Quantitative Relationship Analysis on Structure and Analgesics
Suryadi Budi Utomo, Fajar Sanubari,
Activity of Meperidine Derived Compounds using Semi-Empirical
Budi Utami and Nanik Dwi Nurhayati.
Austin Model 1 (AM1) Method
Wiwiek Karina, Eddy Heraldy, Edi
The Influence of Ca-Mg-Al Hydrotalcite Synthesized from Brine Water
Pramono, Heriyanto and Shanti
on Thermal and Mechanical Properties of HTlc-EVA Composite
Astuti.
Comparison of Carbon Dioxie (CO2), Carbon Monoxide (CO) and Total
Nyenyep Sriwardani and Basori
Unburned Hydrocarbons (THC) on Exhaust Emissions of Wide Variety
Fuel Composition
Indah Widiastuti.
Polylactide Nanocomposites for Packaging Materials: A Review
Effect of Carbon and Nitrogen on Microstructure and Mechanical
Alfirano and Anistasia Milandia.
Properties of Hot-Worked Co-Cr-Mo Alloys for Implant Materials
Budi Harjanto, Ranto, and Yuyun
Utilization of Natural Fiber Materials as An Alternative Non-Asbestos
Friction Brake (Prony Brake Performance)
Estriyanto.
Aditya Yuli Indrawan, Syamsul Hadi, Design of Electric Conductivity Measurements Apparatus Using Fourand Suyitno
Point Probe Method
Synthesis of Polyelectrolyte Complexes Carboxymethyl
Budi Hastuti, Mudasir, Dwi Siswanta,
Chitosan(CMC)-Pectin through Reflux Method as a Pb (II) Metal Ion
and Triyono
Adsorbent
Elfi Nur Rohmah, Pius Doni B. Sinaga, Reactive Blending of Linier Low Density Polyethylene (LLDPE) and
Shela Maranata, Muhammad Ghozali Polylactid Acid (PLA) Using Compatibizer LLDPE-g-MA
Diah Permatasari, Eddy Heraldy, and Biosorption of Toxic Lead (II) Ions using Tomato Waste
Witri Wahyu Lestari
(Solanumlycopersicum) Activated by NaOH
Sayekti Wahyuingsih, Ari Handono
Ramelan, Edi Pramono, Florentinus
Firdiyono, Ariantama Djati Sulistya, Synthesis of Anatase and Rutile TiO2 Nanostructures from Natural
Panji Rofa Argawan, Frenandha Dwi Ilmenite Sand
Dharmawan, Ludfiaastu Rinawati,
Qonita Awliya Hanif
Effect of Varieties Composition of Wall Material on Physical and
Zhulfani Nur Latifatunissa, Kawiji,
Chemistry Characteristics of Microcapsulated Kaffir Lime Leave
Lia Umi Khasanah, and Rohula Utami
Oleoresin (Citrus Hystrix DC)
Mahardika Prasetya Aji, Susanto, Aan Facile Synthesized Blue Luminescent Carbon Nanodots from
Priyanto, Amelia Cristina and Sulhadi Mangosteen Peel
The Tensile and Impact Strengths of Board Produced by Recycling of
Heru Sukanto and Triyono
Alumunium Foil Waste With Pressured Sintering Process
Riesta Ramdhaniyati Osa, Eddy
Adsorption of Procion Red Mx 8b Using Spent Tea as Adsorbent
Heraldy, and Venty Suryanti
Comparative Study of Mechanical Properties of Lightweight Concrete
Rima Sri Agustin and Sarjono Puro
Using Mixed Waste Styrofoam (Recycle) and Original Styrofoam
26
CS-27
27
CS-28
28
CS-29
29
CS-30
30
CS-31
31
CS-32
32
CS-33
33
CS-35
34
CS-36
35
CS-37
36
CS-38
37
CS-39
38
CS-40
39
CS-41
40
CS-42
41
CS-43
42
CS-44
43
CS-46
Ni Made Intan Putri Suari and Heru
Setyawan.
44
CS-47
Siti Asma' Nikmat Leong, Saiful Amri
MR Performances of Bidisperse MR Fluids Utilizing
Mazlan, Ubaidillah, Pakharuddin
Superparamagnetic Maghemite Nanoparticles
Mohd Samin and Ani Idris.
45
CS-48
Nunung Nuraeni, Freddy Haryanto,
Ferry Iskandar, and Abdul Waris.
Effect of Sintering on Thermoluminescence Response of CaSO 4:Dy in
PTFE Composites
46
CS-49
Khairuddin, Francis Clegg, Chris
Breen
XRD Studies on The Effect of Thermal Treatment and Relative
Humidity on The D-Spacings of Polyvinyl Alcohol Montmorillonite
Nanocomposites
47
CS-50
48
CS-51
26
Fauziatul Fajaroh, Sumari, Nazriati
Characteristics of Nanosilica Coating Deposited by PDC
Electrophoresis on Stainless Steel Substrate
Ebrahim Al-Ghurabi and Mohammad
Effect of Acoustic Perturbation on the Bed of Nanopowder
Asif.
Sri Mulyani, Paramasari Dirgahayu, The Insilico Study of Pyrroyl-2-Carboxyl-S-PCP Formation during
No
Abstract
Code
Speakers
Veit Weichold and Karl-Heinz van
Pee.
Title
Biosynthesis of The Natural Product Pentachloropseudilin from
Actinoplanes sp.
The Effect of Copper - Fiber Addition with Fly Ash in The Dreux
Slamet Prayitno, Endang Rismunarsi,
Method - High Quality Concrete on Compressive Strength, Split
Nuranda Qhiqy Rachmawati
Tensile Strength and Modulus of Elasticity
Agus Supriyanto, Lutfi Furqoni, Risa Effect of Sintering Temperature and Screen Printing Type on TiO 2
FilmMorphology for Dye Sensitized Solar Cell
Suryana and Fahru Nurosyid
Suminar Pratapa and Chairatul
Synthesis of Spinel MgAl2O4 Nanoparticles by A Metal-dissolved
Method
Umamah.
Ahmad Rosikhin, Toto Winata, Aulia
Low Pressure Hand Made PVD System for High Crystaline Metal Thin
Fikri Hidayat, Ibnu Syuhada, and
Film Preparation in Micro-Nanometer Scale
Rinaldo Marimpul
Triwikantoro, Munasir, R. Baessler,
Corrosion Behavior of PANI/SiO2 Composite in Synthetic Geothermal
M. Zaenuri, Darminto
Atmosphere
Green Synthesis of ZnO Nanoparticles via Complex Formation by
Is Fatimah and Septian P. Yudha
Using Curcuma Longa Extract
Maridi, Putri Agustina, and Alanindra
Nanotechnology for Environmental Sustainability
Saputra.
Dewi Utami, Agus Kurniawan,
X-Ray Diffraction (XRD) Study of Semiconductor Material Al doped
Syamsul Hadi, and Suyitno Suyitno
ZnO Respected to Sintering Temperature
Optimizing Deacetylation Process for Chitosan Production from Green
Yc. Danarto and Sperisa Distantina
Mussel (Perna viridis) Shell
Suharno,, Budi Harjanto, Yuyun
Characterization of Nickel-Based Superalloy Material
Estriyanto
Siti Mariana Widayanti, Khaswar
Bayah Zeolite Size Reduction Effects on The Physico Chemical
Syamsu, Sri Yuliani, and Endang
Properties and The Absorption Rate of The Potassium Permanganate
(KMnO4)
Warsiki
49
CS-52
50
CS-53
51
CS-54
52
CS-55
53
CS-56
54
CS-57
55
CS-58
56
CS-59
57
CS-60
58
CS-61
59
CS-62
60
CS-63
Dianisa K. Sandi, Slamet Priyono and Structural Properties of Al-Doped Li4Ti5O12 Synthesized by Solid State
Risa Suryana.
Reaction Method
61
CS-64
Risa Suryana and Hitoshi Nakahara.
62
CS-65
63
CS-66
64
CS-67
65
CS-68
66
CS-69
67
CS-70
68
CS-71
69
CS-72
70
CS-73
71
CS-74
72
CS-75
Kuncoro Diharjo, Miftahul Anwar,
Roy Aries P Tarigan, and Ahmad
Rivai.
Dyah Purwaningsih, Roto Roto, and
Hari Sutrisno
Triana Kusumaningsih, Khoirina Dwi
Nugrahaningtyas, Prima Vinka
Rahmayanti
Mujtahid Kaavessina, Sperisa
Distantina, Achmad Chafidz, and
Saeed M Alzahrani
Hendri Widiyandari, and Agus
Purwanto
Dini A. Rachmawati, Heru Setyawan,
and Samsudin Affandi.
Budi Prawara, Erie Martides, Budi
Priyono, N. Rikardo and Husaini Ardy
Ahmad Yasin Rabbani, Hafizh Arrizal
Fakhri, Muhammad Arifin, Akfiny
Hasdi Aimon, and Ferry Iskandar
Anif Jamaluddin, Agus Supriyanto,
Yofentina Iriani, and Suwarni
Suwarni
Supriyono Supriyono, Heru Setyawan,
and Samsudin Affandi
Mohamad Deraman, Mohamad
Simple Models of Reaction of Methane on Si(111)-7x7 Surfaces
Effect of Adhesive Thickness and Surface Treatment to Shear Strength
on Single Lap Joint AL/CFRP Using Adhesive of Epoxy/Al-fine-powder
Structural Characteristics of LiCoxMn2-XO4 via A Simple Reflux
Technique
Biosorption of Remazol Yellow Dye by Rhyzopus Oryzae Biomass Active
and Biomass Immobile
The Influences of Elastomer toward Degradability of Poly (lactic acid)
The Porosity Enhancement of Polyfinylidene Flouride Nanofiber Based
Membrane Prepared by Electrospinning
Porous Silica as Thermal Insulation Material from Water Glass by
Electrophoretic Deposition Method
Improved Wear and Impact Resistance of HVOF Sprayed Ceramic
Matrix Composites Coating
Effect of Precursor Concentration on the Electrical Properties of
LiFePO4 Prepared by Solvothermal Method
Microstructure and Dielectric Properties of Ba 1-xSrxTiO3 Synthesized
by Solid Reaction
Anodized Magnesium as Battery Anode Activated by Sea Water
Effect of Nano-Scale Characteristics of Graphene on Electrochemical
27
No
Abstract
Code
Speakers
Redwani Mohd Jasni, Mohd Suleman,
Ellisa
Hamdan, Noor Ezniera Shafieza
Sazali, and Siti Aisyah Shamsudin.
Ricky Septianto, Ferry Iskandar,
Bebeh Nuryadin, and Lee Hwa.
Varghese Swamy, Siang Piao Chai,
and Vincent Kee Yuen Wong
Wireni, Eddy Heraldy, and Witri
Wahyu Lestari
Devita Dwi Arimurti, Eddy Heraldy,
and Witri Wahyu Lestari
Upik Nurbaiti, Fikriyatul Azizah
Suud, Triwikantoro Triwikantoro,
Mochamad Zainuri, and Suminar
Pratapa
Fitri Aulia Permatasari, Akfiny Hasdi
Aimon, Ferry Iskandar, Takashi Ogi,
and Kikuo Okuyama
Title
Performance of Activated Carbon Supercapacitor Electrodes
Study of Pores Formation Mechanism of Calcium Oxide Prepared by
Spray-Pyrolysis Method with Polystyrene Latex as Template
73
CS-76
74
CS-77
75
CS-78
76
CS-79
77
CS-80
78
CS-81
79
CS-82
80
CS-83
81
CS-84
82
CS-85
83
CS-86
84
CS-87
85
CS-88
86
CS-89
87
CS-91
88
CS-92
89
CS-93
90
CS-94
Ali Mufid and Mochamad Zainuri.
91
CS-95
Siti Wardiyati and Wisnu Ariadi.
92
CS-96
Godras Jati Manuhara, Danar
Praseptiangga, Dimas Rahadian Aji
Muhammad, and Bawani Hindami
Maimuni.
Preparation and Characterization of Semi-Refined Kappa
Carrageenan-Based Edible Film for Nano Coating Application on
Minimally Processed Food
93
CS-97
Sahrul Saehana and Darsikin
Various Natural Dye for DSSC Solar Cells
94
CS-98
Safei Purnama, Setyo Purwanto
Optimization of The Electrical Conductivity Properties of
Nanocomposite Materials of PVA/MWNT Film
28
I Yahya,Harjana, Ubaidillah
I Yahya, Harjana, Ubaidillah, R
Kristiani, J I Kusuma
Isnaeni, Ratu Bilqis, and Jatmiko
Endro Suseno
B.R.Hilca and Triyono
Ibnu Syuhada, Ahmad Rosikhin, Aulia
Fikri Hidayat, Fatimah A Noor, and
Toto Winata.
Aulia Fikri Hidayat, Ahmad Rosikhin,
Ibnu Syuhada, and Toto Winata.
Sri Yani Purwaningsih , Triwikantoro,
Suminar Pratapa, and Darminto.
Syahira Mohd Sharif, Noor Fitrah
Abu Bakar, and Mohd Nazli Naim.
Wagiyo Honggowiranto, Sudaryanto,
and Agus Purwanto
Raymond Tanumiharja, Retno
Maharsi, Akfiny Hasdi Aimon, and
Ferry Iskandar.
Abu Masykur, Atmanto Heru
Wibowo, Dwi Siswanta, and Sri Juari
Santosa.
MIL-53(Fe) – reduced Graphene Oxide Hybrids as Potential
Photocatalytic Energy Materials
Biosorption of Cu(II) Ions by Cellulose of Cabbage (Brassica oleracea
var. capitata L.) as Biosorbent from Agricultural Waste
Biosorption of Lead (II) Ions by NaOH-activated Apple (Malus
domestica) Juice Residue
Synthesis of Nano-forsterite Powder Based on Natural Silica Sand
XPS Study of Transient Graphene Quantum Dots Synthesized by
Hydrothermal Route to the Photoluminescence Effect
Impact of Driving Force Point Position on the Performance of the Novel
iARG-X2 Sound Driven Energy Harvesting Helmholtz Resonator
Sound Absorption Range Extension of Cavity backed Perforated Panel
using Multi Local Resonant Acoustic Metamaterial Inclusion
Detection of CdSe Quantum Dot Photoluminescence for Security Label
on Paper
Effect of Pre-corroded on Fatigue Behaviour Dissimilar Metal Weld Steel
AISI 304 and Carbon Steel SS 400 in NaCL 3.5% Solution
Molecular Dynamic Simulation of Graphene growth at Initial Stage on
Ni(100) Facet for Low Flux C Energy by Chemical Vapor Deposition
Effects of Temperature on Cu Structure Deposited on Si Substrate: A
Molecular Dynamics Study
Synthesis of Nano-sized ZnO Particles by Co-precipitation Method with
Variation of Aging Time
Electrophoretic Deposition of Sorpted Arsenic onto Fine Iron Oxide
Particles in Tap Water
Electrochemical Performance of LiFePO4 Cylinder Cell Battery
Surface Area Improvement of SrTiO3 Nanocrystalline by Polystyrene
Assisted Spray Pyrolysis Method
Modification and Characterization of Chitosan with New Crosslinker
(Edge, Degde And Badge)
The Influence Of Calcination Temperature On The Optical Properties
Of Hematite (α-Fe2O3)
Effluence of SiO2 Barrier on The Characteristics and Performance
Photocatalytic of Fe3O4 / TiO2
No
Abstract
Code
95
CS-99
96
CS-100
97
CS-101
98
CS-102
99
CS-103
100
CS-105
101
CS-112
102
CS-113
103
CS-114
104
CS-115
105
CS-116
106
CS-117
107
CS-118
108
CS-119
109
CS-120
110
CS-121
111
CS-122
Speakers
Yustinus Purwamarga pratala,
Sudaryanto and Fahrurrozi Akbar
Wagiyo Honggowiranto and Evvy
Kartini
Elman Panjaitan, Evvy Kartini, and
Wagiyo Honggowiranto.
Evvy Kartini , Wagiyo Honggowirant
o, Supardi, M.Manawan
Title
Coins Battery Assembly and Testing with Neutron Tomography
Characterization of LiFePO4 Cathode by Addition of Graphene for
Lithium-Ion Batteries
Impedance Characteristics of Nano Particle LiCoO2+PVDF
Synthesize and Characterization of Li3PO4 Solid Electrolyte
for Lithium Ion Batteries
Morphology Identification and Conductivity Study of Solid Electrolyte
Lugas Dwi Prayogi, Muhamad Faisal,
Li3PO4 prepared by prepared by Wet Chemical Reaction and Solid
Evvy Kartini,Wagiyo Honggowiranto
State Reaction
Elfi Susanti VH Sabirin Matsjeh,
Green Synthesis of Chalcones Derivatives as Intermediate of Flavones
Mustofa, Tutik Dwi Wahyuningsih
and Their Antibacterial Activities
and Tri Redjeki
Heri Sutanto, Singgih Wibowo, and
Preparation and Characterization of Double Layer Thin Films
Hadiyanto
ZnO/ZnO:Ag for Methylene Blue Photodegradation
Suharno, Yuyun Estriyanto, and Budi
Repair Technology of Turbine Blade Based Super Alloys
Harjanto.
S. A. N. Leong, S. A. Mazlan, P. M.
Performance of Bidisperse Magnetorheological Fluids Utilizing
Samin, A. Idris, and Ubaidillah
Superparamagnetic Maghemite Nanoparticles
Andri Pratama Salim, Noor
Reducing of Internal Resistance Lithium Ion Battery Using Glucose
Hafidlullah, and Agus Purwanto.
addition
Bella Febiolita, Dewi Khoirunnissak, Investigation on the Fly Ash Thermal Treatment for the Performance
and Agus Purwanto.
of Lithium Ferriphosphate (LiFePO4) Battery
Suci A Rahmawati, Sulistya-ningsih,
Alviansyah Z.A. Putro A.Z.A,
Preparation and Characterization of Nanocomposite Polymer
Nugroho F Windyanto, and Endah R Electrolytes Poly(vinylidene fluoride)/Nanoclay
Dyartanti
Adi Prasetio and Hendri Widiyandari Dye-sensitized Solar Cell Based Carbon Nanotube as Counter Electrode
Harsa Pawignya, Aji
Prasetyaningrum, Endah R. Dyartanti,
Tutuk D. Kusworo, Bambang
Pramudono
Tantular Nurtono, Yayang Ade
Suprana, Abdul Latif, Siti
Machmudah, Widiyastuti, and Sugeng
Winardi
Eka Lutfi Septiani, W. Widiyastuti,
Tantular Nurtono, Sugeng Winardi
Annie Mufyda Rahmatika, W.
Widiyastuti, Sugeng Winardi
Estimation Hydrophilic-Lipophilic Balance Number of Surfactants
The Effect of Impeller Type on Silica Sol Formation in Laboratory
Scale Agitated Tank
Effect Excess Air as An Oxidizer in The Flame Assisted Spray Dryer
Using Computational Fluid Dynamics Approach
CFD Simulation of Hydrodynamic Characteristics on Pulse Combustor
29
Paper K-1
Nanoparticles Dispersion and Nanostructurization for
Energy and Environmental Applications
Kikuo Okuyamaa) and Ratna Balgis
Department of Chemical Engineering, Graduate School of Engineering
Hiroshima University, Kagamiyama 1-4-1, Higashi Hiroshima, 739-8527, Japan
a)
Corresponding author: [email protected], URL: http://home.hiroshima-u.ac.jp/aerosol
Abstract, Nanoparticles (NPs) are expected to be future material for applications of energy conversion and saving
resources. However, since NPs are unstable in theirselves, easily agglomerated, and hard to handle compared to
micron-sized particles, handling techniques become important as well as NPs synthesis methods. Among handling
technologies, dispersions of NPs in water, organic solvent, and polymer are critical in the various device material
applications. In this lecture, first, the dispersion of various NPs in liquid via newly developed bead-mill is
explained, and then, synthesis and evaluation of nanostructured hollow and porous materials via spray drying
process will be explained. The subjects are focused on (i) effect of dispersion conditions on dispersibilty of
agglomerated NPs to form stable primary NPs, (ii) importance of electrostatic force in self-organization of NPs
suspension via spray drying, and (iii) evaluation of nanostructured hollow and porous materials for photo- and
electrocatalyst applications. Finally, the importance of dispersion technology of NPs and the preparation route for
particles nanostructurization will be explained from view point of their industrial and environmental applications.
Keywords: dispersion; nanoparticle; nanostructurization
30
Paper K-2
Recent advances on Nanotechnology in the area of
Energy Storage
M.V. Reddy1, 2, a) and B. V. R. Chowdari2
1
Department of Physics, National University of Singapore, Singapore 117542
2
Department of Materials Science & Engineering, National University of Singapore, Singapore 117542
a)
Corresponding author: [email protected]; [email protected]
Ph.: 65-87274363; 65-65162607; Fax. : 65-6777-6126
Abstract. Commercial lithium ion batteries (LIBs) use layer-type oxide, lithium cobalt oxide (LiCoO2) as the
cathode (positive electrode) and graphite (C) as the anode (negative electrode) material, and a non-aqueous Li- ion
conducting electrolyte in the form of a solution or immobilized in a gel-polymer material. LIBs with an operating
voltage of 3.6 V are extensively used in the present-day portable electronic devices like, cell phones. For high-power
applications like, back-up power supplies and electric/hybrid electric vehicles, the LIBs need to satisfy several
criteria, namely, cost-reduction, improvement in the energy density, safety-in-operation at high current
charge/discharge rates and improvement in the low-temperature-operation. In my talk, I will discuss synthesis of
nanostructured materials by one pot molten salt synthesis, carbo/graphenothermal reduction and nitridiation methods
of various simple binary and ternary oxides such as MO2 (M=Ti, Sn, Mo), AB2O4 (A= Co, Zn, Mn, Ni, Mg, B= Co,
Fe) and MN (M= Co, (Ni0.25Co0.75), Cr, VN, FeN). MO2 (M=Ti, Mo) and normal spinel, Li(MMn11/6)O4 (M=Mn1/6,
Co1/6, (Co1/12Cr1/12)) compounds were prepared by polymer precursor method. Among all Co-containing nano
materials showed better energy storage properties. Nanostructured materials were characterized by Rietveld
refinement X-ray diffraction, Neutron diffraction, X-ray absorption spectroscopy, SEM, TEM, density and BET
surface area methods, and cyclic voltammetry, galvanostatic cycling and electrochemical impedance spectroscopy
techniques. I will discuss the advantages of nanostructured morphology, particle size, matrix elements and surface
area on energy storage properties.
Keywords: Anodes; Energy storage; Cathodes; Nanomaterials; Lithium ion batteries; Materials synthesis;
characterization techniques
31
Paper K-3
Upscaled Reactor for Organic Pollutant Decomposition
using Titanium Dioxide Nanoparticles Under Solar
Illumination
Mikrajuddin Abdullaha), Sutisna, and Mamat Rokhmat
Department of Phyiscs, Bandung Institute of Technology, Jalan Ganeca 10 Bandung 40132
a)
Corresponding author: [email protected]
Abstract. We report here development of large reactor for decomposition of organic pollutants using titanium
dioxide nanoparticles as photocatalyst and operated under solar illumination. Initially, an equipment for coating
nanoparticles on the surface of transparent plastic granules was developed. The equipment works based on
electrostatic force between dielectrics to attach nanoparticles on the plastic surface followed by moderate heating. A
large reactor composed of several glass panels was developed, inside of which the coated granules were distributed.
Polluted water was circulated between granules under solar illumination. We were able to convert the polluted water
into clean water after several hours illumination.
32
Paper IS-1
The Use of Bagasse Ash as a Silica Source for Nanosilicas
and Their Applications
Heru Setyawana)
Department of Chemical Engineering, Faculty of Industrial Technology, Sepuluh Nopember Institute of
Technology, Kampus ITS Sukolilo, Surabaya 60111, Indonesia
a)
Corresponding author: [email protected]
Abstract. Bagasse is the cellulose fiber remaining after the extraction of the sugar-bearing juice from sugarcane.
Bagasse has a high volatile organic content. Therefore, bagasse is a cheap potential energy source; most sugar
factories in Indonesia use bagasse as a primary fuel, generating almost enough energy to operate the plants. Burning
bagasse to generate energy leads to produces large amounts of ash waste, causing disposal methods. Bagasse as is
rich in silica. Therefore, it may be a viable raw material for the production of nanosilicas. In this paper, we presents
about the use of bagasse ash as a silica source for functional nanosilica materials. Typically, silica gel or powder is
produced from acidification of sodium silicate. The fabrication of sodium silicate is done commercially by reacting
material containing silica, e.g., quartz sand, with soda ash in a furnace at a temperature of more than 1300oC. It is
obvious that this technique consumes a large amount of energy, which may discourage the sugar industries from
converting bagasse ash into silica gel or powders. Therefore, it would be advantageous to develop a simple, cheap,
and low-energy method for the production silica gel from bagasse ash, thereby utilizing waste for an economically
value-added product. We proposed an alkali extraction method to recover silica from bagasse ash using a lowtemperature reaction. Our method was based on the unique solubility properties of amorphous silica. The solubility
of amorphous silica is very low at pH < 10, but increases sharply at pH 10. Therefore, silica in bagasse ash could be
dissolved in a boiling alkali solution to form sodium silicate and subsequently precipitated after adding acid to lower
the pH. The silica hydrogel was washed and dried to produce a high purity mesoposous silica gel with surface area
of approximately 160 m2/g. This silica gel can be used as desiccant with water adsorption capacity of approximately
20% at relative humidity of air of 60%. The surface area of the silica gel from bagasse ash could be increased by
controlling the gelation pH and using a template. If the pH was reduced to <7 with the absence of Na+, the surface
area could reach 570 m2/g with larger pore size and pore volume. Using PEG template, the surface area increased
and reached 650 m2/g. The shrinkage of silica gel network during drying is mainly due to the effect of water surface
tension and the further condensation reaction. To avoid collapsing of the gel structure during drying, the surface
silanol groups were sylilated. The modified silica gels could be dried at ambient pressure without shrinkage,
producing a silica aerogel with very high surface area, which could reach 1,114 m2/g.
Keywords: Bagasse ash; nanosilica; alkali extraction; dessicant; aerogel
33
Paper IS-2
Solid Electrolyte for Solid-State Batteries: Have Lithiumion Batteries Reached Their Technical Limit?
Evvy Kartinia)
Center for Science and Technology of Advanced Materials – National Nuclear Energy Agency Kawasan
Serpong, Tangerang Selatan 15314, Banten, Indonesia
a)
Corresponding author: [email protected]
Abstract. With increasing demand for electrical power on a distribution grid lacking storage capabilities, utilities
and project developers must stabilize what is currently still intermittent energy production. In fact, over half of utility
executives say "the most important emerging energy technology" is energy storage. Advanced, low-cost battery
designs are providing promising stationary storage solutions that can ensure reliable, high-quality power for
customers, but research challenges and questions lefts. Have lithium-ion batteries (LIBs) reached their technical
limit? The industry demands are including high costs, inadequate energy densities, long recharge times, short cyclelife times and safety must be continually addressed. Safety is still the main problem on developing the lithium ion
battery.The safety issue must be considered from several aspects, since it would become serious problems, such as
an explosion in a Japan Airlines 787 Dreamliner's cargo hold, due to the battery problem. The combustion is mainly
due to the leakage or shortcut of the electrodes, caused by the liquid electrolyte and polymer separator. For this
reason, the research on solid electrolyte for replacing the existing liquid electrolyte is very important. The materials
used in existing lithium ion battery, such as a separator and liquid electrolyte must be replaced to new solid
electrolytes, solid materials that exhibits high ionic conductivity. Due to these reasons, research on solid state ionics
materials have been vastly growing worldwide, with the main aim not only to search new solid electrolyte to replace
the liquid one, but also looking for low cost materials and environmentally friendly. A revolutionary paradigm is
also required to design new stable anode and cathode materials that provide electrochemical cells with high energy,
high power, long lifetime and adequate safety at competitive manufacturing costs. Lithium superionic conductors,
which can be used as solid electrolytes, promise the potential to replace organic liquid electrolytes and thereby
improve the safety of next-generation high-energy batteries. Li3PO4 has been proved to be a good candidate for solid
electrolyte, due to its easy in preparation, low cost, high melting temperature and good compatibility with the
electrode materials. In the present work, Li3PO4 has been prepared by wet chemical reaction, a simple method with
the advantage of recycling a waste product H3PO4. The crystal structure has been characterized by both neutron and
x-ray diffraction. The use of neutron scattering plays important role on observing the light atoms such as lithium ion.
The x-ray diffraction results showed the crystal structure of orthorhombic phase P m n 21 (31), that belongs to the βLi3PO4, with the lattice parameters are a = 6.123872 , b = 5.250211 , c = 4.876378. The conductivity of β-Li3PO4
was around 10-8 S/cm. Furthermore, the future application of the solid electrolyte layer in lithium ion battery will
also be considered. It is concluded that the used of local resources on producing the solid electrolyte Li 3PO4 for
lithium ion battery will give more added values to the researches and national industry.
Keywords: Lithium phosphate; Li3PO4; solid electrolyte; lithium ion battery
34
Paper IS-3
The Formation of Silicon Nano- and Micro-Materials via
The Zinc Reduction Reaction of SiCl4
Susumu Inasawa
Graduate School of Bio-Applications and Systems Engineering,
Tokyo University of Agriculture and Technology,
2-24-16 Nakacho, Koganei, Tokyo, 184-8588, Japan
Corresponding author: [email protected]
Abstract. Nano- and Micro-materials of silicon are produced by the zinc reduction reaction of silicon tetrachloride.
For example, silicon nanowires with a diameter of ca. 100 nm, polygonal microparticles with a diameter of 10 µm,
and needle-like silicon wires form, depending on reaction conditions. In this talk, we report an overview on the
synthesis and interesting features of these silicon materials.
35
Paper IS-4
A Overview of Nano Particles Utilization in
Magnetorheological Fluids
Saiful Amri Mazlan1, a), Ubaidillah1,2,b) and Siti Asma 3, c)
1
Malaysia Japan International Institute of Technology, Universiti Teknologi Malaysia
Jl. Sultan Yahya Petra, Kuala Lumpur, Malaysia
2
Mechanical Engineering Department, Faculty of Engineering, Universitas Sebelas Maret
Jl. Ir. Sutami 36A, Kentingan, Surakarta, Central Java, Indonesia
3
Faculty of Mechanical Engineering, Universiti Teknologi Malaysia
81310 Johor Bahru, Johor, Malaysia
a)
Corresponding author: [email protected]
b)
[email protected]
c)
[email protected]
Abstract. Liquid state magnetorheological materials namely magnetorheological fluids (MRFs) are considered as
smart materials due to their reversible rheological properties. The tunable properties depend on the magnitude of
external magnetic field. The micron-size magnetizable particles having low remnant values within fluid carrier react
to the magnetic field resulting in alteration of fluid yield stress. The classic problem of this smart material is
sedimentation issue in relatively fast duration. Many researchers have attempted to solve this issue by introducing
nano-size materials. This paper presents an overview of incorporation nano-size particles including their different
types and process, performance achievement in terms of rheological properties and in device applications.
36
Paper IS-5
Structure and Properties of Solid Polymer Electrolyte
Based on Chitosan and ZrO2 Nanoparticle for Lithium Ion
Battery
Sudaryanto1,a), Evi Yulianti1, and Patimatuzzohrah2
1
Center for Sains and Technology Advanced Materials – BATAN
Kawasan Puspiptek Serpong, Tangerang Selatan15314
2
Department Of Physics, Mataram University
Jl. Majapahit 62 Mataram 83125, Indonesia
a)
Corresponding author: [email protected]
Abstract. In order to develop all solid lithium ion battery, study on the structure and properties of solid polymer
electrolytes (SPE) based on chitosan has been studied. The SPE were prepared by adding Zirconia (ZrO2)
nanoparticle and LiClO4 as lithium salt into the chitosan solution followed by casting method. Effect of the ZrO2 and
salt concentration to the structure and properties of SPE were elaborated using several methods. The structure of the
SPE cast film, were characterized mainly by using X-ray diffractometer (XRD). While the electrical properties of
SPE were studied by electrochemical impedance spectrometer (EIS) and ion transfer number measurement. XRD
profiles show that the addition of ZrO2 and LiClO4 disrupts the crystality of chitosan. The decrease in sampel
crytalinity with the nanoparticle and iisalt addition may increase the molecular mobility result in the increasing
sampel conductivity and cathonic transfer number as determined by EIS and ion transfer number measurement,
respectively. The highest ionic conductivity (3.1x10-4 S/cm) was obtained when 2 wt% of ZrO2 nanoparticle and 40
wt% of LiClO4 salt were added to the chitosan. The ion transfer number with that composition was 0.5. It is high
enough to be used as SPE for lithium ion battery.
Keyword: Chitosan, ZrO2 nanoparticle, SPE, Lithium Ion Battery
37
Paper IS-6
The Organic Substances Degradation using Photo-catalyst
Material Based Advanced Oxidation Process
Hendri Widiyandari1, a)
1
Department of Physics, Diponegoro University,
Jl. Prof. H. Soedarto SH, Semarang, Central Java 50275, Indonesia
a)
Corresponding author: [email protected]
Abstract. The degradation of environmental quality due to the massive usage of fossil fuels has alerted peoples to do
something to save the world live. Global warming is a “scary” word which we listen every day. For the sustainable
development of the human society, the development of both alternative clean energy supplies and environmental
friendly technology is an urgent task. The using of advanced oxidation processes (AOP) involving hydroxyl radical
which can quickly remove or sterilize a broad range of organic pollutant has been considerable interest. AOP include
semiconductor photocatalyst systems, which are becoming a one of the most promising technology due to the easy
way to utilize the either natural sunlight or artificial indoor illumination, and is thus abundantly available everywhere
in the world more specifically in our country (Indonesia). Among the semiconductor materials, Titanium dioxide
(TiO2) is widely used for decomposition of organic substances. This process is driven using both ultra violet (UV)
and visible light irradiation. In this article, we would report the synthesis of TiO2 based-material and its application
in the decomposition of organic substances as well as the mechanism of AOP using TiO 2 photo-catalyst material for
organic substance degradation.
Keywords: Advance oxidation process, organic pollutant, semiconductor, photocatalyst, TiO2
38
Paper IS-7
Aerosol Synthesis of Hierarchical Nanostructured
Carbon Particles Using A Dual Polymer System
Ratna Balgisa) and Kikuo Okuyama
Department of Chemical Engineering, Graduate School of Engineering
Hiroshima University, Kagamiyama 1-4-1, Higashi Hiroshima, 739-8527, Japan
a)
Coresponding author: [email protected]
Abstract. Carbon particles with hierarchical nanostructures are of great scientific interest because of their
remarkable properties, such as high specific surface area and porosity, which enable their use in adsorbents, fuel
cells, and etc. A careful structuring strategy is highly desirable, yet very challenging, to obtain nanostructured carbon
particles. Organic templating method using polystyrene latex (psl) is one of the promising technique, because psl is
readily decompose during carbonization. However, carbon source which is compatible with psl is highly necessary.
Herein we develop a self-organized dual polymer system to address this issue. Phenolic resin was selected as the
carbon source since it contains oh− groups that may allow control over the self-organization with psl nps through
electrostatic interaction. The electrostatic interaction between phenolic resin and psl can be tuned by adjusting the
sign and magnitude of the zeta potential (ζ) of psl. We investigate how the electrostatic forces between the two
polymers influenced the morphology of the pores and particles.
Keywords: zeta potential; hollow carbon; porous carbon; phenolic resin; spray pyrolysis.
39
Paper IS-8
Development of High Scale Pulse Combustion Spray
Pyrolysis System
I Made Jonia) and C. Panataranib)
1
Department of Physics, Padjadjaran University, Jl Raya Bandung-Sumedang Km 21 Jatinangor, Sumedang,
West Java, 45363, Indonesia
a)
Corresponding author: [email protected]
b)
[email protected]
Abstract. The pulse combustion spray pyrolysis (PCSP) has been successfully developed using commonly used
industrial automatic control system. The automatic control system includes PLC and SCADA system to allow the
system to be monitored in the control room. The system offer the online communication system and monitoring
system using an application which is developed by Java application. On the other hand, the pulse combustion system
use a novel design to control of the propane and oxygen flow rate and ratio in relation to obtain temperature. The
PCSP system has been tested to synthesis the Red and Green Phosphor with high production rate of 150 gram/hours.
The obtain phosphors have been characterized by XRD, SEM and Photoluminescence spectroscopy.
40
Paper IS-9
Analysis of Carrier Gas Flow Rate Effect on
Hydroxyapatite Particle Formation in Ultrasonic Spray
Pyrolysis
W. Widiyastuti1, a), Adhi Setiawan2, b), Tantular Nurtono1, c), and Sugeng
Winardi1, c)
1
Chemical Engineering Department, Institut Teknologi Sepuluh Nopember (ITS), Kampus ITS Sukolilo
Surabaya 60111 Indonesia
2
Shipbuilding Institute of Polytechnic Surabaya (PPNS), Kampus ITS Sukolilo Surabaya 60111 Indonesia
a)
Corresponding author: [email protected]
b)
[email protected]
c)
[email protected]
d)
[email protected]
Abstract. Ultrasonic spray pyrolysis has been well-known process for producing fine particles from single and
multicomponent materials. Here, the effect of carrier gas flow rate in ultrasonic spray pyrolysis process was studied
in the particle formation of hydroxyapatite using solution precursor of Ca(CH3COO)2 and (NH4)2HPO4 with Ca/P
ratio of 1.67. The experimental analysis was accompanied with computational fluid dynamics (CFD) simulation for
comparison. In the simulation, the evaporation of the solvent in the droplets, a second evaporation due to crust
formation, the decomposition reaction of the precursor involving the transfer of heat and mass transfer from droplet
to surrounding were considered. By maintaining temperature at 900 ᵒC, the residence time increased with decreasing
the carrier gas flow rate led to the increasing the evaporation rate and the reacted fraction of the precursor. The
predicted and experimental results of average particles size were agree well with discrepancy 6.3%.
41
Paper IS-10
The Optical Properties and Photocatalytic Activity of
CdS-ZnS-TiO2/Graphite for Isopropanol Degradation
Under Visible Light Irradiation
Fitria Rahmawatia), Rini Wulandari, Irvinna M Murni, and Mudjijono
Research Group of Solid State Chemistry & Catalysis, Chemistry Department, Sebelas Maret University, Jl. Ir.
Sutami 36 A Kentingan, Surakarta, 57126
a)
Corresponding author: [email protected]
Abstract. This research prepared a photocatalyst tablet of CdS-ZnS-TiO2 on a graphite substrate. The synthesis was
conducted through chemical bath deposition method. The graphite substrate used was a waste graphite rod from
primary batteries. The aims of this research are studying the crystal structure, the optical properties and the
photocatalytic activity of the prepared material. The photocatalytic activity was determined through isopropanol
degradation. The result shows that the TiO2/Graphite provide direct transition gap energy at 2.91 eV and an indirect
transition gap energy at 3.21 eV. Deposition of CdS-ZnS changed the direct transition gap energy to 3.01 eV and the
indirect transition gap energy to 3.22 eV. Isopropanol degradation with the prepared catalyst produced new peaks at
223-224 nm and 265-266 nm confirming the production of acetone. The degradation follows first order with rate
constant of 2.4 10-2 min-1.
Keywords: photocatalytic activity; CdS; ZnS; TiO2-Graphite; isopropanol degradation
42
Paper CS-1
Low Frequency Magneto-Impedance Effects in
Electrodeposited Multilayer [Ni80Fe20/Cu]3 on Cu-Wire
Substrates with Different Sample Geometri
B. Anggit Wicaksono, Ahmad Asrori Nahrun, Nuryani, Budi Purnamaa)
Physics Department, Post Graduate Program Universitas Sebelas Maret, Jl. Ir. Sutami 36A, Kentingan,
Surakarta INDONESIA 57126
a)
Corresponding author: [email protected]
Abstract. Magneto-impedance (MI) multilayer [Ni80Fe20 (800 nm)/Cu (300 nm)]3 in Cu wire has been modified in
its geometric shapes. The Multilayer is the result of electro-deposition with Pt (platinum) as the electrode. This study
shows that the MI ratio changes to the geometry of the sample. The geometry modification increases the MI ratio of
54.35% (wire shape) amounted to 70.53% (solenoid shape); it is measured at a frequency of 100 kHz. The
modification also increase the sensitifity sensor magnetic from 9.05%/mT to 12.82%/mT.
Keywords: Magneto-impedance; Ni80Fe20; multilayer; geometric
43
Paper CS-2
Influence of Sample Length to Magnetoimpedance Effect
in Electrodeposited [Cu/Ni80Fe20]3 Multilayer Wires at
Low Frequency
Ismaila), Nuryanib), Budi Purnamac)
Physics Department, Post Graduate Program Sebelas Maret University
Jl. Ir. Sutami 36A, Kentingan, Surakarta, 57126, Ph./Fax. +62-271-669017 Indonesia
a)
b)
Corresponding author: [email protected]
Corresponding author: [email protected]
c)
[email protected]
Abstract. A Magnetoimpedance (MI) effect has been investigated in electrodeposited wires composed of nonmagnetic conductive core coated by a soft ferromagnetic layer. In this work, a 460 µm Cu wire is coated with three
soft ferromagnetic layers of Ni80Fe20 sandwiched by a thin Cu layer. The MI effect has been measured as a function
of the sample length in low frequency (20 kHz – 100 kHz). The MI ratio raises by increasing the wire length; it
increases approximately 400% by the increases the length of wire from 1 cm to 4 cm. This work also shows a
significant increase in the field sensitivity by increasing the wire length significantly.
Keywords: Magnetoimpedance; Wire; Multilayer; Low frequency
44
Paper CS-3
Synthesis of TiO2 by Electrochemical Method from TiCl4
Solution as Anode Material for Lithium-ion Batteries
Adrian Nura), Agus Purwanto, Arif Jumari, Endah R. Dyartanti,
Sifa Dian Permata Sari, and Ita Nur Hanifah
Research Group of Advanced Material, Department of Chemical Engineering,
Sebelas Maret University, Jl. Ir. Sutami 36 A Kentingan, Surakarta Indonesia 57126
a)
Corresponding author: [email protected]
Abstract. Metal oxide combined with graphite becomes interesting composition. TiO2 is a good candidate for Li ion
battery anode because of cost, availability of sufficient materials, and environmentally friendly. TiO 2 gravimetric
capacity varied within a fairly wide range. TiO2 crystals form much depends on the synthesis method used. The
electrochemical method is beginning to emerge as a valuable option for preparing TiO2 powders. Using the
electrochemical method, the particle can easily be controlled by simply adjusting the imposed current or potential to
the system. In this work, the effects of some key parameters of the electrosynthesis on the formation of TiO 2 have
been investigated. The combination of graphite and TiO2 particle have also been studied for lithium-ion batteries.
The homogeneous solution for the electrosynthesis of TiO2 powders was TiCl4 in ethanol solutionThe electrolysis
was carried out in an electrochemical cell consisting of two carbon electrodes with dimensions of (5 × 2) cm. The
electrodes were set parallel with a distance of 2.6 cm between the electrodes and were immersed in the electrolytic
solution at a depth of 2 cm. The electrodes were connected to the positive and negative terminals of a DC power
supply. The electrosynthesis was performed galvanostatically at 0.5 to 2.5 hours and a voltage varying from 8 to 12
V under constant stirring at room temperature. The resulting suspension was either aged at 48 hrs, filtered, dried
directly in an oven at 150°C for 2 h, washed 2 times, and dried again 60 °C for 6 h . The particle product have been
used to lithium-ion battery as anode. Synthesis of TiO2 particle by electrochemical method at 10 V for 1 to 2.5 hrs
resulted anatase and rutile phase.
Keywords: titanium oxide; synthesis; electrochemical method; anode material
45
Paper CS-4
Improving Lithium-Ion Battery Performances by Adding
the Additive of Fly Ash from Coal Combustion on
Cathode Film
Endah R Dyartanti, Arif Jumaria), Pepi Wahidati, Yulaikha Aryani
and Agus Purwanto
1
Research Group of Battery & Advanced Material , Department of Chemical
Engineering, Sebelas Maret University, Jl. Ir. Sutami 36 A Kentingan, Surakarta
Indonesia 57126
a)
Corresponding Author: [email protected]
Abstract. A lithium battery was composed of anode, cathode and a separator. Performances of lithium battery was
also influenced by the conductive material on cathode film. In this research, the use of fly ash from coal combustion
as conductive enhancer for increasing the performances of lithium battery was investigated. Lithium iron phosphate
(LiFePO4) was used the active material of cathode. The dry fly ash passed on 200 mesh screen,LiFePO 4 and
Acethylene black (AB), polyvinylidene fluoride (PVDF) as a binder and N-methyl-2-pyrrolidone (NMP) as a solvent
were mixed well to be slurry. The slurry were then coated and dried and hot pressed to obtain the cathode film. The
ratio of fly ash and AB were varied at the values of 1%, 2%, 3%, 4% and 5% while the other components were
constant. The anode film was made with certain thickness and composition. The performance of battery lithium was
examined by Eight Channel Battery Analyzer, the composition of the cathode film was examined by XRD (X-Ray
Diffraction), and the structure and morphology of the anode film was analyzed by SEM (Scanning Electron
Microscope). The composition, structure and morphology of cathode film was only different when fly ash added was
4% AB or more. The was a maximum value of fly ash added on cathode film giving the best performance.The best
performance was on fly ash added of 2% AB with the performance of 81.712 mAh/g on charging and 79.412 mAh/g
on discharging.
Keywords: Lithium-Ion Battery; Fly Ash; Conductive Enhancer; Battery Performance
46
Paper CS-6
The Influence of reduced Graphene Oxide on Electrical
Conductivity of LiFePO4-Based Composite as Cathode
Materials
Muhammad Arifin1, Akfiny Hasdi Aimon1, Toto Winata1, Mikrajuddin
Abdullah1, and Ferry Iskandar1, 2, a)
1
Physics of Electronic Materials Research Division, Department of Physics, Institut Teknologi Bandung,
Bandung 40132 Indonesia
2
Research Center for Nanoscience and Nanotechnology Institut Teknologi Bandung, Bandung 40132 Indonesia
a)
Corresponding author: [email protected]
Abstract. LiFePO4 are fascinating cathode active materials for Li-ion batteries application because of their high
electrochemical performance such as a stable voltage at 3.45 V and high specific capacity at 170 mAh.g -1. However,
their low intrinsic electronic conductivity and low ionic diffusion are still the hindrance for their further application
on Li-ion batteries. Therefore, the efforts to improve their conductivity are very important to elevate their prospecting
application as cathode materials. Herein, we reported preparation of additional of reduced Graphene Oxide (rGO) into
LiFePO4-based composite and the influence of rGO on electrical conductivity of LiFePO4-based composite by varying
mass of rGO in composition. Vibration of LiFePO4-based composite was detected on Fourier Transform Infrared
Spectroscopy (FTIR) spectra, while single phase of LiFePO4 nanocrystal was observed on X-Ray Diffraction (XRD)
pattern, it furthermore, Scanning Electron Microscopy (SEM) images showed that rGO was distributed around
LiFePO4-based composite. Finally, the 4-point probe measurement result confirmed that the optimum electrical
conductivity is in additional 2 wt% rGO for range 1 to 2 wt% rGO.
Keywords: LiFePO4-based composite as cathode material; reduced Graphene Oxide; electrical conductivity
47
Paper CS-7
The Influences of Mole Composition of Strontium (x) on
Properties of Barium Strontium Titanate (Ba1-xSrxTiO3)
Prepared by Solid State Reaction Method
Dianisa Khoirum Sandi1, Agus Supriyanto1, Anif Jamaludin2, and
Yofentina Iriani1, a)
1
Physics Department, Faculty of Mathematics and Natural Science, Sebelas Maret University.
Physics Department, Faculty of Teacher Training and Education, Sebelas Maret University.
2
a)
Corresponding author: [email protected]
Abstract. Barium Strontium Titanate (Ba1-xSrxTiO3) or BST was prepared by solid state reaction method. Raw
materials are BaCO3, SrCO3, and TiO2. Those materials are mixed for 8 h, pressed, and sintered at temperature
1200oC for 2 h. Mole composition of Sr (x) was varied to study its influences on structural, morphological, and
electrical properties of BST. Variation of (x) are x=0; x=0.1; and x=0.5. XRD patterns showed a single phase of
BST, which mean that mixture of raw materials was homogenous. Crystal structure was influenced by x. BaTiO3 and
Ba0.9Ti0.1TiO3 have tetragonal structure, while Ba0.5Sr0.5TiO3 is cubic. The diffraction angle shifted to right side
(angle larger) as the increases of x. Crystalline size of BaTiO3, Ba0.9Sr0.1TiO3, and Ba0.5Sr0.5TiO3 are 38.13 nm; 38.62
nm; and 37.13 nm, respectively. SEM images showed that there are still of pores which were influenced by x.
Ba0.9Sr0.1TiO3 has densest surface (pores are few and small in size). Sawyer Tower circuit showed that BaTiO 3 and
Ba0.9Sr0.1TiO3 is ferroelectric, while Ba0.5Sr0.5TiO3 is paraelectric. The dielectric constants of BaTiO3, Ba0.9Sr0.1TiO3
and Ba0.5Sr0.5TiO3 at frequency of 1 KHz are 156; 196;and 83, respectively. Ba0.9Sr0.1TiO3 has relatively highest
dielectric constant. It is considered that Ba0.9Sr0.1TiO3 has densest surface.
Keywords: Barium Strontium Titanate; Ferroelectric; Solid State reaction method
48
Paper CS-8
Synthesis Of Silica-Coated Magnetite Nanoparticles By
Electrochemical Method As Adsorbent For Metylene Blue
Removal From Waste Water Samples
Memik Dian Pusfitasari1, 2, Heru Setyawan 1, a), and Samsudin Affandi1
1
Department of Chemical Engineering, Faculty of Industrial Technology, Institut Teknologi Sepuluh Nopember
Kampus ITS Sukolilo, Surabaya 60111, Indonesia
2
Program of Chemical Engineering, Department of Industrial Technology and Proccess, Institut Teknologi
Kalimantan, Kampus ITK Karang Joang, Balikpapan 76127, Indonesia
a)
Corresponding author: [email protected]
Abstract. Silica-coated magnetite nanoparticles (Fe3O4@SiO2) have been successfully synthesized using an
electrochemical method. This materials were characterized and were tested as an adsorbent material for methylene
blue (MB) removal from water samples. Adsorption performance of silica-coated magnetite nanoparticles were
evaluated by batch adsorption experiments. Synthesized materials were contacted with variaty of MB concentration
solution under stirring conditions until equilibrium was reached. The magnetite nanoparticles produced by this
method are nearly spherical with a mean size ranging from 6 to 10 nm, which is lower than the size of particles
prepared in water. The magnetite nanoparticles exhibit superparamagnetic properties with saturation magnetization
ranging from 15 to 22 emu/g, (the value are less than that of the Fe3O4 bulk materials, Ms=92 emu/g). The highest
maximum adsorption capacity (qm) belong to magnetite was synthesized with 200 ppm sodium silicate addition with
the value of 24,2131 mg/g and can be easily recovered from treated water with external magnetic bar. The highest %
removal of methilene blue belong to magnetite was synthesized with 200 ppm sodium silicate addition with ranging
from 85 to 95%. Magnetite could be reused as adsorbent after washed and regenerated. The % removal of this
recylce materials were 70-88%. Magnetite were syntesized with addition of sodium silicate both 150 and 200 ppm
have the same relative shape of kinetic adsorption curve and follow pseudo-second order kinetic model.
Keywords: Silica-coated magnetite; sodium silicate; electrolysis, adsorption
49
Paper CS-9
Synthesis of Gadolinium Carbonate-ConjugatedPoly(ethylene)glycol (Gd2(CO3)3@PEG) Particles via a
Modified Solvothermal Method
Erika L. Y. Nasution1, Atika Ahab1, Ferry Iskandar 1, 2, a), Bebeh W. Nuryadin3,
Freddy H.4, and Idam Arif 4
1
Physics of Electronic Materials Research Division Departement of Physics, Institut Teknologi Bandung,
Bandung 40132 Indonesia
2
Research Center for Nanoscience and Nanotechnology Institut Teknologi Bandung, Bandung 40132 Indonesia
3
Departement of Physics, Faculty of Science and Technology UIN Sunan Gunung Djati Bandung, Bandung
40614, Indonesia
4
Nuclear Physics and Biophysics Research Division Departement of Physics, Institut Teknologi Bandung,
Bandung 40132 Indonesia
a)
Corresponding author: [email protected]
Abstract. Pegylated gadolinium carbonate ((Gd2(CO3)3)@PEG) powder was successfully synthesized by a modified
solvothermal method. The synthesized products were characterized by means of X-ray diffraction (XRD), Fourier
Transform Infrared spectroscopy (FTIR), Scanning Electron Microscopy (SEM), and Energy dispersive X-ray
spectroscopy (EDX). A systematic change in the chemical surface composition, crystallinity and size properties of
the Gd2(CO3)3@PEG particles was observed by increasing the reaction time from 5 – 8 hours. The corresponding
XRD patterns showed that the Gd2(CO3)3 particle has hexagonal symmetry (JCPDS No. 37-0559) with a crystallite
size of 3.5 and 4.6 nm. Our results suggest that Gd 2(CO3)3)@PEG can be used as an active material in biomedical
applications.
Keywords: Gadolinium carbonate; PEG; solvothermal method
50
Paper CS-10
Study on Characteristics of PVDF/Nano-Clay Composite
Polymer Electrolyte Using PVP as Pore-Forming Agent
Endah R Dyartanti1, 2, Agus Purwanto2, I Nyoman Widiasa1,
and Heru Susanto1, a)
2
1
Department of Chemical Engineering, Diponegoro University, Semarang, Indonesia.
Departement of Chemical Engineering, Sebelas Maret University, Surakarta, Indonesia.
a)
Corresponding author: [email protected]
Abstract. Polyvinylidene fluoride (PVDF) based polymer electrolytes have a high dielectric constant, which can
assist in greater ionization of lithium salts. The main advantages of PVDF are its durability in long battery operation
and its the ability to be a good ion conductor. However, the limitation of this polymer is its crystalline molecular
structure. Dispersing nano-particles in the polymer matrix may improve the characteristics of the polymer. This
paper aims to investigate the impact of nano-clay addition on the characteristics of PVDF polymer to be used as a
polymer electrolyte membrane. In addition the effect of poly(vinyl pyrrolidone) (PVP) is also investigated. The
membrane was prepared by phase separation method whereas the polymer electrolyte membranes was prepared by
immersing into 1 M lithium hexafluorophosphate (LiPF6) in ethylene carbonate/dimethyl carbonate (EC/DMC)
electrolytes for 0.5 h. The membranes were characterized by scanning electron microscope (SEM), X-ray diffraction
(XRD), electrochemical impedance spectroscopy (EIS), and linear sweep voltammetry (LSV). The results showed
that both nano-clay and PVP have significant impacts on the improvement of PVDF membranes to be used as
polymer electrolyte.
Keywords: PVDF; Nano clay; PVP; Gel Polymer Electrolyte
51
Paper CS-11
Solution of D-dimensional Dirac Equation for Coulombic
Potential Using NU Method and Its Thermodynamics
Properties
C. Caria), A. Suparmib), M. Yuniantoc), and B. N. Pratiwid)
Physics Department, Faculty of Mathematics and Science, Sebelas Maret University, Jl. Ir. Sutami 36A
Kentingan Surakarta 57126, Indonesia
a)
Corresponding author: [email protected]
b)
[email protected]
c)
[email protected]
d)
[email protected]
Abstract. The analytical solution of D-dimensional Dirac equation for Coulombic potential combined is investigated
using Nikiforov-Uvarov method. The D dimensional relativistic energy spectra are obtained from relativistic energy
eigenvalue equation by using Mat Lab software. The corresponding D dimensional radial wave functions are
formulated in the form of generalized Jacobi and Laguerre Polynomials. In the non-relativistic limit, the relativistic
energy equation reduces to the non-relativistic energy which will be applied to determine some thermodynamical
properties of the system. The thermodynamical properties of the system are expressed in terms of error function and
imaginary error function.
Keywords: D-dimensional Dirac equation; Nikiforov-Uvarof method; Thermodynamics properties
52
Paper CS-12
Solution of D-dimensional Dirac Equation for Hyperbolic
Tangent Potential Using NU Method and Its Application
in Material Properties
A. Suparmi1,a), C. Cari1, B. N. Pratiwi1, and U.A. Deta2
1
Physics Department, Faculty of Mathematics and Science, Sebelas Maret University, Jl. Ir. Sutami 36A
Kentingan Surakarta 57126, Indonesia
2
Physics Department, Faculty of Science and Mathematics Education and Teacher Training, Surabaya State
University, Surabaya, Indonesia
a)
Corresponding author: [email protected]
Abstract. The analytical solution of D- dimensional Dirac equation for hyperbolic tangent potential is investigated
using Nikiforov-Uvarov method. In the case of spin symmetry the D dimensional Dirac equation reduces to the D
dimensional Schrodinger equation. The D dimensional relativistic energy spectra are obtained from D dimensional
relativistic energy eigen value equation by using Mat Lab software. The corresponding D dimensional radial wave
functions are formulated in the form of generalized Jacobi polynomials. The thermodynamically properties of
materials are generated from the non-relativistic energy eigen-values in the classical limit. In the non-relativistic
limit, the relativistic energy equation reduces to the non-relativistic energy. The thermal quantities of the system,
partition function and specific heat, are expressed in terms of error function and imaginary error function which are
numerically calculated using Mat Lab software.
Keywords: D-dimensional Dirac Equation; Nikiforov-Uvarov method; Material Properties
53
Paper CS-13
Influence of pH the Formulation TiO2 Powder Prepared
by Co-precipitation of TiCl3 and The Photocatalytic
Activity
Gatut Yudoyonoa), Vicran Zharvan, Nur Ichzan, Rizqa Daniyati, Bachtera
Indarto, Yono Hadi Pramono, Muhammad Zainuri, and Darminto Darmintob)
Institut Teknologi Sepuluh November
a)
Corresponding author: [email protected]
b)
[email protected]
Abstract. Titanium dioxide (titania) nanoparticle were synthesized by coprecipitation process of titanium trichloride
(TiCl3) in aqueous medium, with NH4OH as regulator pH. The solution pH varied during the synthesis process
between pH 3-8, and all samples calcined AT 400oC temperature for 3 hours. Characteristics and properties of the
TiO2 powder were investigated using X-ray diffraction (XRD), Scanning Electron Microscopy (SEM). XRD results
show that the single-phase rutile formed when the pH is less than 5, anatase single phase formed began pH 8, and the
pH of the solution between 5-8 formed mixed phase rutile-anatase, rutile-brookite or anatase-brookite. Methylene
Blue (MB) photodegradation test were performed in order to evaluate photocatalytic activity. Nanoparticles TiO 2
rutile, anatase phase, and mixed phase rutile-brookite, anatase-brookite used to test the photocatalytic activity by
measuring the absorbance spectrum photodegradation using UV-Vis spectrometer. The test results showed that the
phase anatase provide the greatest photodegradation than other phases.
Keywords: titanium dioxide; coprecipitation; pH effect; photocatalytics activity; methylene blue
54
Paper CS-14
Antocyanine Extracted from Hibiscus (Hibiscus rosa
sinensis L.) as a Photosensitizer on Nanostructured-TiO2
Dye Sensitized Solar Cells
A.H. Ramelan1, a), S. Wahyuningsih2, b), and N. A. Rosyida1
1
Research Center for Electronic Materials and Energy, Faculty of Mathematics and Natural Sciences,
Sebelas Maret University (UNS), Jl. Ir. Sutami No. 36A Surakarta 57126, Indonesia.
2
Research Center for Inorganic Materials, Faculty of Mathematics and Natural Sciences,
Sebelas Maret University (UNS), Jl. Ir. Sutami No. 36A Surakarta 57126, Indonesia.
a)
Corresponding author: [email protected]
b)
[email protected]
Abstract. Antocyanin extracted from Hibiscus (Hibiscus rosa sinensis L) as a photosensitizer in nanostructuredTiO2 dye sensitized solar cells have been fabricated. UV-Vis spectroscopy measurement showed that antocyanin has
the absorption ability in the visible region. Nanostructed-TiO2 powder in this reasearch was prepared by sol-gel
method with calcination temperature of 600 °C and characterized using XRD, XRF, and SEM. XRD results
indicated that TiO2 powder crystal phase is anatase-rutile mixture. The characterization of TiO2 powder using XRF
showed that the number of TiO2 content of 98,67 wt%. TiO2 layer prepared by slip casting method with different
thickness. SEM results of TiO2 layers showed the average cavity size of 0,83 μm. Samples of solar cells were
fabricated with an area of of 2x2 cm2 and the samples were soaked in antocyanin for 24 hours. These samples were
tested using Keithley test. The results showed that the sample with a TiO2 layer thickness of 4,8 μm solar cell has the
highest efficiency of 0,025%.
Keywords: TiO2 dye sensitized solar cell; organic dye; TiO2 layer; nanostructure
55
Paper CS-15
Modification of Natural Matrics Lacs-Bagasse for Matric
Composite Films
Nanik Dwi Nurhayatia)
P. Kimia, Universitas Sebelas Maret Surakarta, Jl. Ir. Sutami 36A Surakarta (0271) 642283, Faks (0271)
646655
a)
Corresponding author : [email protected]
Abstract. Material technology continues to be developed in order to with a material that is more efficient, this is
done with composite technology is a combination of two or more materials to obtain the desired material properties.
Research aims to modify and characterize the natural matrics lacs with waste bagasse as composite. Natural matrics
lacs modified with various concentrations of citric acid. 100 mesh waste bagasse the delignification acid hydrolysis
method with sulfuric acid concentration. Results of the study of natural matrics lacs from ticks secretion shellac,
optimum modified by the addition of citric acid 5% (v/v) and delignification bagasse with sulfuric acid hydrolysis
method optimum at 1,5% (v/v). FTIR spectra showed natural matrics without modification and modified lacs are
wide absorption 3448 cm-1 for group-OH, C=O ester strong in 1712 cm-1 and the methylene group- CH2 on
absorption 1465 cm-1. So that the matrics can be made of natural matrics lacs composite with reinforcement
bagasse.
Keywords: composite; natural matrics lacs; bagasse; modification
56
Paper CS-16
Hepatitis C Virus-like Particles for Survivin-RNA
Interference Delivery System Targetting Hepatocellular
Carcinoma
A. A. Prasetyo1, 2, 3, a) and F. Maharani1, b)
1
A-IGIC (A-Infection, Genomic, Immunology & Cancer) Research Group, Sebelas Maret University,
Jl. Ir. Sutami 36A, Surakarta 57126, Indonesia.
2
Center of Biotechnology and Biodiversity Research and Development, Sebelas Maret University,
Jl. Ir. Sutami 36A, Surakarta, Indonesia.
3
Department of Microbiology Faculty of Medicine, Sebelas Maret University, Jl. Ir. Sutami 36A,
Surakarta, Indonesia.
a)
Corresponding author: [email protected], [email protected], [email protected]
b)
[email protected]
Abstract. Hepatocellular carcinoma is one of the main cause cancer-related death worldwide with increasing
incidence rate per year. Survivin, one of anti-apoptotic protein involved in carcinoma pathogenesis, can be silenced
by RNA interference (RNAi) technology. Yet, administration of naked RNAi, without any delivery mechanism, is
not effective due to its instability in vivo. Therefore, safe and effective delivery mechanism for Survivin-RNAi is
required. Hepatitis C virus (HCV)-like particles (HCV-LPs) can be used for Survivin-RNAi delivery system. The
chemical characteristics of HCV-LPs prevent degradation of Survivin-RNAi in the blood. The enhanced
permeability and retention (EPR) effect in the cancer vasculature can also be utilized in passive transportation HCVLPs into cancer tissue. HCV-LPs may interacts with native virus receptors on hepatocellular carcinoma cells,
inducing endocytosis, therefore could release Survivin-RNAi inside hepatocellular carcinoma cells. Thus, HCV-LPs
core protein is ideal for Survivin-RNAi delivery system for hepatocelullar carcinoma therapy.
Keywords: HCV-LPs; RNAi; Survivin; Hepatocellular Carcinoma
57
Paper CS-17
Micromagnetic Study of Exchange Interaction Effect on
Magnetization Reversal Mode of CoFeAl
Umi Muflihatun Nurul Azizah1, Suryasatriya Trihandaru2, Nur Aji Wibowo2, a)
1Department of Physics Education, Faculty of Science and Mathematics
2Department of Physics, Faculty of Science and Mathematics
Satya Wacana Christian University, Salatiga 50711, Central Java, Indonesia
a)
Corresponding author: [email protected]
Abstract. A magnetization switching dynamics of perpendicular magnetic anisotropy material CoFeAl has been
simulated. This simulation was conducted using Landau-Lifshift Gilbert equation. Magnetic parameters used are
magnetic anisotropy 2.3 × 106 erg/cm3, magnetic saturation 10 kG, medium Gilbert damping 0.3 and various
exchange constants in a range of (1.5 – 4.0) × 10-7 erg/cm. CoFeAl is modeled as a parallel-pipe with the dimension
is 50×50×20 nm3. As a result, this simulation predicts that the chosen materials exhibit good thermal stability which
is greatly affected by exchange energy. Magnetization reversal mechanism is dominated by domain wall propagation
process. Moreover, the simultaneous distribution of thermal with external magnetic field on the materials reduces the
writing field which reaches the minimum value when exchange constant is 3.5 × 10 -7 erg/cm.
Keywords: micromagnetic; magnetization; exchange interaction; nanodot; domain wall
58
Paper CS-18
Correlation of Fermentation Time with Genistein Content
on Soybean Tempe Production and Hepatoprotective
Activity on Swiss Albino Mice
Sri Retno Dwi Ariani1, a), Sabirin Matsjeh2, b), Mustofa3, c),
and Bambang Purwono 2, d)
1
Study Program of Chemistry Education, Faculty of Teacher Training and Education, Universitas Sebelas
Maret, Jl Ir. Sutami 36A, Kentingan, Surakarta, Indonesia
2
Department of Chemistry, Faculty of Mathematic and Natural Sciences, Universitas Gadjah Mada,
Yogyakarta, Indonesia
3
Department of Pharmacology and Toxicology, Faculty of Medicine, Universitas Gadjah Mada, Yogyakarta,
Indonesia
a)
Corresponding author: [email protected]
b)
[email protected]
c)
[email protected]
d)
[email protected]
Abstract. How long time fermentation to soybean to produce ethyl acetate extract of soybean tempe with the highes
levels of genistein and hepatoprotective activity of its on Swiss albino mice (Mus musculus) against paracetamol
induced liver damage are presented. The activities of genistein are antioxidant, estrogenic, anticancer, topoisomerase
II inhibition, protein tyrosine cinase inhibition, phosphatidylinositol turnover inhibition, and antiproliferative.
Raprima Tempe Inoculum that contain Rhizopus oligosporus NRRL 2771 was used to ferment soybean for 0, 24, 48,
72 and 96 h. Extraction of de-hulled soybean and soybean tempe was conducted by maceration method with ethyl
acetate. Quantification of genistein in extract was determined by HPLC system. Hepatoprotective activity tested in
mice against paracetamol was evaluated by SGOT, SGPT and the liver cell damaged levels. The results showed that
the ethyl acetate extract of soybean fermented for 72 h produced the highest levels of genistein (70.14 mg from
100.00 g de-hulled soybean as a raw material), (EAESFG). In the group of mice pre-treated with EAESFG before
given paracetamol showed SGOT, SGPT and the liver cell damaged levels were significant decrease with increasing
doses of EAESFG. This study indicated that EAESFG could protect mice hepatocyte against paracetamol.
Keywords: Soybean; tempe; Rhizopus oligosporus; hepatoprotective; paracetamol
59
Paper CS-19
Preparation and Characterization of Bandage Coated
Silver-Chitosan Nanocomposites for Antibacterial Wound
Dressing Application
Maryani, Ashadi, and Endang Susilowatia)
Universitas Sebelas Maret
a)
Corresponding author: [email protected]
Abstract. Bandage is a medical device that is essential for wound dressing. To improve the performance of the
bandage, it has been coated by silver-chitosan (Ag/Chit) nanocomposites with pad-dry-cure method. The
nanocomposites were performed by chemical reduction method at room temperature using glucose as reducing
agent, sodium hydroxide (NaOH) as accelerator reagent, silver nitrate (AgNO3) as metal precursor and chitosan as
stabilizing agent. Localized surface plasmon resonance (LSPR) absorption band of silver nanoparticles was
investigated using UV-Vis spectrophotometer. The bandage coated Ag/Chit nanocomposites were characterized by
fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and scanning electron microscope (SEM).
In addition, antibacterial activity of the bandage toward Gram positive (Staphylococcus aureus) and Gram negative
(Escherichia coli) were also studied. The formation of silver nanoparticles was confirmed by the appearance of
LSPR absorption peak at 412.2 – 423.2 nm. The silver-chitosan nanocomposites film demonstrated good activity
against both Gram positive (S. aureus) and Gram negative (E.Coli). Thus the bandage coated (Ag/Chit)
nanocomposites have a potential to be used for antibacterial wound dressing application.
Keywords: Silver; chitosan; nanocomposites
60
Paper CS-20
Emissions Mitigation of CO Toxic Gases Bioproduct
Engineering Based on Cincau Leaf (Cyclea Barbata Miers)
and Water Hyacinth (Eichhornia Crassipes (Mart) Solms.)
to Application in Motor Vehicle Exhaust Emissions
Test Pass Towards Environmentally Friendly
Prabang Setyono1, a), Aru Dewangga1, Hari Setyanto2
1
Faculty of Matematic and Natural Science Sebelas Maret University
2
Faculty of Engineering Sebelas Maret University
a)
Corresponding author: [email protected]
Abstract. Nowadays, air pollution shows a concerned condition. The pollutant gases from motor vehicle’s exhaust
such as CO gas can be harmful to human health, so the efforts to mitigate air pollution in the CO gas is required.
Based on the chemical similarity between chlorophyll and hemoglobin, chlorophyll can be used as an absorbent of
CO gas. Water hyacinth (Eichhornia crassipes (Mart) Solms.) is the one of a weed plant that can damage the aquatic
environment. Therefore, the chlorophyll that is contained inside is potential to be extracted and used as an absorbent
of CO gas. In addition, Cincau leaf (Cyclea barbata Miers) leaf which contains of pectin polysaccharides and mucin
has the ability to be the base of gel. The purpose of this study are to determine the ability of the water hyacinth leaf
extract with the Cincau leaf base gel against CO gas, to find out the best composition ratio of chlorophyll gel which
has the optimal absorption of CO gas, and to find out the physical changes which occur in the chlorophyll gel after
gas CO presented. This study employs a One Factor Completely Randomized Design, namely the chlorophyll gel
with the ratio between water hyacinth leaf extract in acetone solvent and Cincau leaf extract in aquadest solvent of
300 ml are A (0:10), B (1:9), C (2:8), and D (3:7). The three replicates of each treatment are presented by CO gas
and the levels of chlorophyll measured every 60 seconds. The results are analyzed using a laboratory tests, which is
compared with an Analysis of Variance to determine the significance of differences between the treatments, using a
Duncan's Multiple Range Test, which is tested at 5% level test to determine the difference significant between the
treatments, using a Paired Sample T-Test to determine the significance of differences before and after the treatments,
and the last using a regression analysis. The chlorophyll gel has the ability to adsorb the CO gas. The best gel
composition ratio between the water hyacinth leaf extract in acetone solvent and Cincau leaf extract in aquadest
solvent in adsorbing CO gas is 1:9. No physical changes in the chlorophyll gel.
Keywords: Adsorption; chlorophyll; CO gas; Cincau leaf; water hyacinth leaf
61
Paper CS-21
Green Synthesis and Characterization of Nano Zero
Valent Iron from The Banana Peel Extract and Ferrous
Sulfate from Iron Scrap
Sunardi1, a), Ashadi2, Sentot Budi Rahardjo3, Inayati4
1
Environmental Science, Sebelas Maret University, Surakarta, Indonesia
Departement of Chemistry Education, Sebelas Maret University, Surakarta, Indonesia
3
Departement of Chemistry, Sebelas Maret University, Surakarta, Indonesia
4
Chemical Engeneering, Sebelas Maret University, Surakarta, Indonesia
2
a)
Corresponding author: nardi_usb@yahoo,co.id
Abstract. The interest in nano Zero Valent Iron (nZVI) has been increasing significantly since the development of a
green synthesis method in which extracts from wastes are used. A novel green synthesis procedure was used for the
one step production of nano Zero Valent Iron (nZVI) using raw materials with a polyphenol content. Banana peel
2+
0
extract contain active polyphenol compounds, which reduce the Fe to Fe by combining extracts with ferrous
sulfate. This method for prodicing nZVI is considered the most environmental friendly. In the present study, nZVI
were synthesized from banana peel extract and ferrous sulfate from iron scrap. The obtained are mainly nZVI
oxidation state. A systematic characterization of nZVI was performed using UV-Vis and TEM studies. The diameter
of nZVI was predominantly found within the range 30-100 nm.
Keyword: nZVI; green synthesis; banana peel; ferrous sulfate; iron scrap
62
Paper CS-22
Composite Nanofibers from Annona muricata Linn
Extract/Polyvinyl Alcohol Systems as Antibacterial
Wound Dressing
Nenni Mona Aruana), Ida Sriyantib), Dhewa Edikresnhac), and
Muhammad Miftahul Munird)
Institut Teknologi Bandung
a)
Corresponding author: [email protected]
b)
[email protected]
c)
[email protected]
d)
[email protected]
Abstract. Annona muricata linn, or soursop in english, is a plant that belongs to annonaceae family which has
proven chemical substances and bioactive compounds that can be used as traditional medicine. The ethanolic extract
of annona muricata l leaves (aml) has also been confirmed to have antimicrobial activity and can be used to cure
some bacterial diseases caused by Bacillus subtilis, Proteus vulgaris, Staphylococcus aureus, Klebsiela pneumonia,
Salmonella typhimutium, Escheria coli, Enterobacter aerogenes, Streptococcus pyogenesand also it has the ability to
heal skin infections caused by bacteria. In this research, the antibacterial composite nanofibers mats were produced
by loading ethanolic aml leaves extract onto polyvinyl alcohol (pva) and then processed via electrospinning. The
nanofibers mats were synthesized from aml extract and pva with various concentrations from 8 to 14% (w/w) using
pva solution 10% (w/w). Polyvinyl alcohol (pva) was used as polymer matrix and the aml extract was used as the
effective antibacterial compounds. Pva/aml extract fiber composites were successfully synthesized by means of
electrospinning method with diameter size 120-150 nm. From the in vitro antimicrobial test, it was proven that the
aml extract and the composite nanofibers has the ability to halt the growth of staphylococcus aureus. Hence, the
presence of aml extract in the pva solution improves the electrospinnability of the pva polymer and also generates
the antibacterial ability onto the composite nanofibers mats which promotes a good wound dres sing material.
Keywords: Annona muricata L; antibacterial; wound dressing; electrospinning; nanofibers
63
Paper CS-23
Evaluation of Biosurfactant Grown in Corn Oil by
Rhodococcus rhodochrous on Removing of Heavy Metal
Ion from Aqueous Solution
Venty Suryantia), Sri Hastuti, and Dwi Pujiastuti
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Sebelas Maret University
Jl. Ir. Sutami 36A, Surakarta, Central Java 57126, Indonesia.
a)
Corresponding author: [email protected]
Abstract. The potential application of biosurfactants to remove heavy metal ion from aqueous solution by batch
technique was examined. The glycolipids type biosurfactant grown in corn oil by Rhodococcus rhodochrous was
employed. The biosurfactants were produced in a media containing of 20% v/v corn oil with 7 days of fermentation.
The biosurfactant formed stable water-palm oil emulsion up to 12 days with emulsification index of 97% and
decreased the surface tension from 62 to 48 nN/m. Heavy metal ion removal, in this case cadmium ion, by crude and
patially purified biosurfactants has been investigated from aqueous solution at pH 6. The adsorption capacity of Cd
(II) ion by crude biosurfactant with 5 and 10 minutes were 1.74 and 1.82 mg/g, respectively. Additionally, the
adsorption capacity of Cd (II) ion by partially purified biosurfactant with 5 and 10 minutes were 0.79 and 1.34 mg/g,
respectively. The results demonstrated that adsorption capacity of Cd (II) ion by crude biosurfactant was higher than
that of by partially purified biosurfactant. The results suggested that the biosurfactant could be used in the removal
of heavy metal ions from aqueous solution.
Keywords: Rhodococcus rhodochrous; biosurfactant; glycolipids; corn oil; heavy metal ion removal
64
Paper CS-24
Spectroscopic Properties of The Er3+-doped TeO2-ZnOBi2O3 Glasses
Ahmad Marzuki1, a), Rudi Susanto2, b), Cari Cari1, c), Adi Pramuda3, d), and
Wahyudi Wahyudi3, e)
1
Sebelas Maret University
STMIK Duta Bangsa Surakarta
3
STKIP Pontianak
2
a)
Corresponding author: [email protected]
b)
[email protected]
c)
[email protected];
d)
[email protected]
e)
[email protected];
Abstract. This paper reports the spectroscopic properties of the Er3+-doped TeO2-ZnO-Bi2O3 glasses having
compositions 55TeO2-(43-x)ZnO-2Bi2O3-xEr2O3 (x = 0.5, 1.0, 1.5, 2.0, 2.5, 3.0 mol%). Glasses were prepared by
melt quench technique at 9000C. The measured optical absorption spectra were analysed using Judd–Ofelt theory in
order to obtain the parameters like the radiative transition rates (Ar), radiative life-times (τ), fluorescence branching
ratios (β) and the emission cross-section (Σσ) of its different transitions. The results show that the radiative transition
rates increases as the content of Er3+ ions in the glass increases. This leads to decreasing the radiative lifetimes as the
content of Er3+ ions in the glass increases.
Keywords: Tellurite Glasses; Judd-Ofelt analysis; optical absorption
65
Paper CS-25
Design and Performance of Porous Concrete for Pervious
Pavement Application
Ary Setyawana), Djoko Sarwono and Rochim
Transportation Research Group, Sebelas Maret University, Jl. Ir. Sutami 36 A Surakarta 57126 Indonesia.
a)
Corresponding author: [email protected]
Abstract. The construction of roads in general, use of flexible pavement and rigid pavement watertight cause a
reduction in green land time reduces the water catchment areas. The use of porous concrete is expected to absorb
water into the ground. But, the application of porous concrete in the fields often of has had blockage by soil or sand.
This study aims to determine the effect of filling the pore cavity with sand and soil against permeability, infiltration
velocity and compressive strength, as well as to determine the ratio of the RAB porous concrete cast with
conventional concrete cast. This study, conducted using the experimental method, i.e. by reducing the proportion of
fine aggregate in normal concrete mix design. Crushed stone aggregate used a uniform size of 1-2 cm. The
proportion of fine aggregates used 30% of the fine aggregate proportion of normal concrete obtained from
preliminary test results by Daryanto Ari Prabowo (2012). Once it has filled the pore cavity with soil, Merapi sand
and river sand. Then will be tested permeability and infiltration velocity by the method of falling head water
permeability test and compressive strength test. The results of porous concrete test show test results of porous
concrete using 30% of the sand and variation of pore cavity filler, i.e. soil, Merapi sand and river sand highest value
could be obtained in a compound of 30% sand and pore cavity filler from the Merapi sand amount of 5.71 MPa for
the compressive strength. The highest vertical permeability happened in a compound of 30% sand and pore cavity
filler from river sand is amount of 0.38 cm / d t. Horizontal permeability is achieved at the pore cavity filled with the
value 0.364 cm / Sec. While the highest value of infiltration velocity in the field obtained 0.337 on the pore cavity
filler from river sand. Porous concrete in this study is strongly advised to use at rigid pavement with low traffic such
as the shoulder of the road, parks, parking lots, pedestrian sidewalks, and others because it could pass and absorb
water into the ground.
Keywords: porous concrete; aggregates uniform; porosity; permeability; falling head method permeability;
infiltration velocity; compressive strength
66
Paper CS-26
The Scaevolafrutescen (Mill.) Krause Dried-Leaves
Extract as A Potential Natural Reduction System for
Synthesis of Gold Nanoparticles and The Product
Evaluation for Antibacterial of Eschericia coli
Salprima Yudha S.1, a), Eka Angasa1, Totok Eka Suharto1, Yuta Nishina2,
Zulfikri Achid Mardlia1, Sipriadi3
1
Department of Chemistry, Faculty of Mathematics and Natural Sciences, University of Bengkulu
Jalan Raya W.R Supratman, KandangLimun 38371A, Bengkulu, Indonesia
2
Research Core for Interdisiplinary Sciences, Okayama University,
Tsushima-naka, Kita-Ku Okayama, 700-8530, Japan
3
Departmen of Biology, Faculty of Mathematics and Natural Sciences, University of Bengkulu
Jalan Raya W.R Supratman, KandangLimun 38371A, Bengkulu, Indonesia
a)
Corresponding author: [email protected]
Abstract. Indonesia has a lot of resources that could be used as a precursor, medium or other purposes, such as
synthesis of advanced materials. There are many reports recently shows that some plants and animals extracts were
useful to prepare some desired materials. In line with the statement, this report will explain a resources candidate that
can be used for green preparation of gold nanoparticles. The Scaevola fruteschen (Mill.) Krause was obtained from
Enggano island, Bengkulu Province, Indonesia. The research included the synthesis, characterization and application
study of the resulting nanoparticles in their original medium/reduction system as antibacterial agent of Escherichia
coli. Besides that, the interaction study of the nanoparticles solution with Pb 2+ ions was also studied. The results,
shows that the present reduction system (aqueous extract of the plant leaves) successfully reduced gold (III) ions to
gold metals as shown by new peak at 544 nm in spectrophotometry analysis. The average nanopartiles size was 96
nm based on Particles Size Analyzer (PSA) result. The stability study revealed that the nanoparticles solution was
not stable in the persence of Pb(OAc)2 at high concentration. The nanoparticles were effective enough toward E. coli
as shown by inhibition zone that
indicates the degree of sensitivity of bacteria to nanoparticles.
Keywords: Scaevola fruteschen (Mill.) Krause; Gold Nanoparticles; Stability; Reduction
67
Paper CS-27
Effect of Concentration of Sodium Silicate Solution in The
Synthesis of Silica-Coated Magnetite Nanoparticles by
Ultrasonication
Fauziatul Fajaroha), Sumarib), Nazriatic)
Department of Chemistry, State University of Malang, East Java, Indonesia
Jl.Semarang 5 Malang 65145
a)Corresponding author: [email protected]
b)[email protected]
c)[email protected]
Abstract. An ex-situ silica coating of magnetite nanoparticles synthesized electrochemically had been successfully
carried out by ultrasonication. An aqueous solution of sodium silicate had been used as silica source.The Si-O-Si, SiO and Fe-O-Si bonds on the surface of the silica-coated magnetite had been successfully identified using FTIR.
Reduction in particle size due to the influence of ultrasound was studied using SEM. Enhancement in the specific
surface area of the particles due to the silica coating and reduction in particle size was learned through BET analysis.
The Characters of the resulting silica-coated magnetite were influenced by the concentration of sodium silicate
solution. The greater the concentration of sodium silicate solution, the smaller the particle crystallinity and the larger
the particles surface area was produced. The resulting silica-coated magnetite has a surface area of 38.171 to 67.993
m2/g, otherwise the non-coated particles only has a surface area of 27.894 m2/g. This silica-coated magnetite
nanoparticles has more potent as an adsorbent than that of the bare magnetite. Besides that, the presence of silanol
groups on its surface makes an opportunity for further functionalization needed for some applications.
Keywords: ex-situ silica coating; sodium silicate; magnetite nanoparticle; ultrasonication
68
Paper CS-28
Quantitative Relationship Analysis on Structure and
Analgesics Activity of Meperidine Derived Compounds
using Semi-Empirical Austin Model 1 (AM1) Method
Suryadi Budi Utomoa), Fajar Sanubari, Budi Utami, and Nanik Dwi Nurhayati
Chemical Education Study Program, FKIP, Sebelas Maret University, Jl. Ir. Sutami 36 A, Kentingan Surakarta
57126 telp. (0271) 648939, Indonesia.
a)
Corresponding author: [email protected]
Abstract. The modification on meperidin structure is needed to obtain new material derivatives that have better
activity. In order to reduce trial and error risk in laboratory, structure modification of the compound can be done by
Quantitative Structure-Activity Relationship (QSAR) method. This research aim were to analyze the relationship of
structure and analgesics activity of meperidine derivatives and to determine it’s Hänsch equation. The study was
conducted through computer calculations (in silico) using semi empirical method of AM1. The stage of the research
consist of molecular modeling of compounds derived meperidine, geometry optimization process, and searching
descriptor value in the form of electronic, steric and hydrophobic descriptors. The last step was performed statistical
analysis using Backward multiple regression models. The results showed that the analgesic activity was significantly
affected by variations in descriptors, especially electronic descriptors that have more dominant influence than that of
steric and hydrophobic descriptors. The most influential descriptor was the charge on the nitrogen atom, as the atom
1
was an important component in the analgesic compounds. QSAR equation with Hänsch methods are: 𝑙𝑜𝑔
=
𝐸𝐷50
−0,386 − 95,354𝑞𝑁1 − 9,708𝑞𝐶3 + 3,963𝑞𝐶4 + 2,702𝐸. 𝐻 − 2,046𝐸. 𝐿 + 0,44𝑆𝐴 − 0,962𝐿𝑝 − 0,364𝑅𝑀. with
R = 0,966 ; R square = 0.933 ; error standard = 0,492328 ; sig = 0,002.
Keywords: structure modification; analgesic activity; QSAR equation; meperidine derivatives
69
Paper CS-29
The Influence of Ca-Mg-Al Hydrotalcite Synthesized from
Brine Water on Thermal and Mechanical Properties of
HTlc-EVA Composite
Wiwiek Karinaa), Eddy Heraldyb), Edi Pramono, Heriyanto, and Shanti Astuti
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Sebelas Maret University
Jl. Ir. Sutami 36A, Kentingan, Surakarta 57126
a)
Corresponding author: [email protected]
b)
[email protected]
Abstract. Ca-Mg-Al hydrotalcite-like compound (Ca-Mg-Al HTlc) was prepared by co-precipitation method using
brine water that is well known as the desalination process waste water. The structure of Ca-Mg-Al HTlc was
determined by X-Ray Diffraction (XRD) and Fourier Transform Infrared (FTIR) analysis. Ca-Mg-Al HTlc was
studied as a non-halogenated filler in ethylene vinyl acetate (EVA) matrix. Composites with different filler
concentrations were prepared to evaluate the influence of Ca-Mg-Al HTlc on thermal and mechanical properties of
EVA.The presence of Ca-Mg-Al HTlc in the composite has been confirmed by FTIR analysis. Thermal properties of
composites show significant reduction of degradation temperature as well the loading of HTlc in EVA. However, the
total enthalpies combustion of composites with 1% and 5% HTlc loadings higher compared to neat EVA. Further,
mechanical properties were determined by tensile test. The result shows that tensile strength and elongation at break
of composites decrease relatively by Ca-Mg-Al HTlc addition.
Keywords: brine water; hydrotalcite; ethylene vinyl acetate; thermal properties; mechanical properties
70
Paper CS-30
Comparison of Carbon Dioxie (CO2), Carbon Monoxide
(CO) and Total Unburned Hydrocarbons (THC) on
Exhaust Emissions of Wide Variety Fuel Composition
Nyenyep Sriwardania and Basorib
Department of Mechanical Engineering Education.SebelasMaret University.
Ahmad Yani Street Number 200 Pabelan- Surakarta - Indonesia.
Post Code 57100. Phone Number : +62 271 718419
a)
Corresponding author: [email protected]
b)
[email protected]
Abstract. In the combustion process of hydrocarbon fuels would generate emissions in the form of Carbon Dioxide
(CO2), Carbon Monoxide (CO) and unburned hydrocarbon (HC). Previous researchers have shown that the emission
of motor vehicle's combustion has an impact on the global warming increased and decreased quality of life.
Therefore, it is necessary for the conservation of energy to find new and renewable energy which environmentally
friendly. This paper will discuss a wide range of fuel mixture and its effect. Data obtained by doing variations in fuel
composition for internal combustion engines. Meanwhile, data analysis is done by calculating the CO 2 emission
index, emission index of CO and HC emission index. Results show that the combustion exhaust emissions, carbon
dioxide produced will be inversely proportional to the total amount of carbon monoxide and unburned hydrocarbons.
The percentage ratio of the increase in CO2 and the decrease in CO and HC will be discussed in more detail to obtain
optimal results.
Keywords: carbon dioxide; carbon monoxide; hydrocarbon; exhaust; emissions; fuel
71
Paper CS-31
Polylactide Nanocomposites for Packaging Materials: A
Review
Indah Widiastutia)
Research Group of Mechanical and Automotive Engineering, Department of Mechanical Engineering
Education, Sebelas Maret University
a)
Corresponding author: [email protected]
Abstract. This review aims at highlighting on an attempt for improving the properties of polylactide (PLA) as
packaging material by application of nanocomposite technology. PLA is attracting considerable interest because of
more ecofriendliness from its origin as contrast to the petrochemical-based polymers and its biodegradability.
Despite possessing good mechanical and optical properties, deterioration of the material properties in PLA materials
during their service time could occur after prolonged exposure to humidity and high temperature condition. Limited
gas barrier is another drawback of PLA material that should be overcome to satisfy the requirement for packaging
application. To further extend the range of mechanical and thermal properties achievable, several attempts have been
made in modifying the material such as blending with other polymers, use of plasticizing material and development
of PLA nanocomposites. Nanocomposite is a fairly new type of composite has emerged in which the reinforcing
filler has nanometer scale dimensions (at least one dimension of the filler is less than 100 nm). In this review, the
critical properties of PLA as packaging materials and its degradation mechanism are presented. This paper discusses
the current effort and key research challenges in the development of nanocomposites based on biodegradable
polymer matrices and nano-fillers. The PLA layered silicate nanocomposites where the filler platelets can be
dispersed in the polymer at the nanometer scale owing to the specific filler surface modification, frequently exhibits
remarkable improvements of mechanical strength, gas barrier and thermal stability.
72
Paper CS-32
Effect of Carbon and Nitrogen on Microstructure and
Mechanical Properties of Hot-Worked Co-Cr-Mo Alloys
for Implant Materials
Alfiranoa) and Anistasia Milandia
Department of Metallurgical Engineering, University of Sultan AgengTirtayasa, Cilegon, Indonesia
a)
Corresponding: [email protected]
Abstract.The microstructure and mechanical properties of a Co–Cr–Mo alloy obtained by hot working have been
studied. This alloy complies with the ASTM F75 standard and is widely used in the manufacturing of orthopedic
implants because of good wear and corrosion resistance, high strength, and excellent biocompatibility properties.
This work focuses on the effect of carbon and nitrogen addition to the precipitates formation and mechanical
properties of Co-Cr-Mo alloy under manufacturing of hot working process. In this study, C and N were selected as
the alloying elements. The chemical compositions of six cast alloys were Co-28Cr6Mo-0,08C-(0-0.2N), Co-28Cr6Mo-0,15C-(0-0.2N), and Co-28Cr-6Mo-0,25C(0-0.2N) (wt%). All the samples were homogenized at 1200oC for 6
hours and cooled inside the furnace. After homogenized, these samples were heated at 1200 oC for 90 minutes and
rolled in 90% reduction, then quenched in water. After quenched, micro structure of samples were observed using
optical microscopy and SEM. XRD analysis was conducted to evaluate the phase of precipitate. Hardness and tensile
test were carried out to determine the mechanical properties. M23X6 (M dan X refer to metallic elements and C
and/or N, respectively) was the main phase almost in all Co-Cr-Mo hotphase is a dominant phase in Co-28Cr-6Mo-0,08C alloy. The Co-28Cr-6Mo-0,25C-0,2N alloy has the highest
hardness value of 50,8 HRC, while Co-28Cr-6Mo-0,08C alloy has the lowest hardness value amongs the all alloys.
Keywords: Co-Cr-Mo alloy; hot working; carbon; nitrogen; presipitate
73
Paper CS-33
Utilization of Natural Fiber Materials as An Alternative
Non-Asbestos Friction Brake (Prony Brake Performance)
Budi Harjantoa), Rantob), and Yuyun Estriyantoc)
Pendidikan Teknik Mesin, FKIP Universitas Sebelas Maret
a)
Corresponding author: [email protected]
b)
[email protected]
c)
[email protected]
Abstract. Motor vehicle brake linings of asbestos materials in use in the market have the disadvantage that slippage
and less grip when wet or rainy conditions, in addition to the asbestos materials are polluting the environment and
adverse effect on health. This study try to develop non-asbestos brake linings made from natural fibers (cob corn
fiber, palm fiber, coconut shell fiber and bamboo fiber). The purpose of this risearch was to (1) investigate the
influence of the composition of natural fiber materials, brass powder, MgO and polyester resin as a brake linings
material on the performance of the braking power, (2) investigate the optimal braking power of four brake linings
with four natural fiber materials. The research used an experimental method, includes the steps of preparing
specimens brake linings, braking power testing on Prony Brake machine, tabulation of data, data analysis, and
conclusions. Data was analyzed using descriptive comparative. For comparison used asbestos brake linings that have
been used in the market that is brand Indopart. Conclusions resulting from this research are: (1) The composition of
corn cob powder and other ingredients mixing influenced on braking power. The best results with the braking power
is obtained on the composition of 30% corn cob powder, brass powder 30%, MgO 20%, and 20% resin, which is
equal to 1.66 kW. The results was lower than the braking power of the Indopart brake linings 1.95 kW, (2) the
composition of coconut shell powder and other ingredients mixing influenced on braking power. The best results
with the braking power is obtained on the composition of the Coconut Shell powder 30%, 30% aluminum powder,
and 40% resin which amounted 1.75 kW. The results still lower than the braking power of the Indopart brake
1.95Watt, (3) Composition of palm fiber powder and other mixing material influenced on braking power. The best
results with the braking power is obtained on the composition of the palm fiber powder 55%, brass powder (Cu Zn)
15%, MgO 20%, and 10% Polyester Resin, which amounted to 1.96 kW. This result is slightly larger than the
braking power of the Indopart brake linings 1.95 kW, (4) The composition of bamboo powder and other ingredients
mixing influenced on braking power. The best results with the braking power is obtained on the composition of 35%
bamboo powder, brass powder 30%, MgO 35%, and 20% resin, which is equal to 1.94 kW. These results are slightly
lower but similar to the braking power of the Indopart brake linings 1,95 kW, (5) The four types of non-asbestos
brake linings made from natural fibers, one type produce braking power is higher than the Indopart asbestos brake
linings, the brake of palm fiber material, one type is almost the same with Indopart asbestos brake linings, its
bamboo fiber, and two types lower than Indopart brake linings, corn cobs fiber and coconut shell fibers.
Keywords: brake linings; natural fibers; non-asbestos; prony brake
74
Paper CS-35
Design of Electric Conductivity Measurements Apparatus
Using Four-Point Probe Method
Aditya Yuli Indrawana), Syamsul Hadib), and Suyitnoc)
Mechanical Engineering Department, Sebelas Maret University, Indonesia
a)
Corresponding author: [email protected]
b)
[email protected]
c)
[email protected]
Abstract. Thermoelectric as an energy harvesting technology for the special purpose operates in high temperature
condition. Characteristics measurement of thermoelectric in order to obtain high quality semiconductor material
which have capability to operates under extrem condition is an interesting topic. This research try to design and
manufacture electric conductivity measurement apparatus which able in measuring up to 500 0C using four point
probe method. Tested materials were stainless steel ST36, Pb, and semiconductor silicon in 13 Ø and thickess of 3
mm with and without heat treatment. Validation process for the steel and copper in ambient temperature the
deviation of resistivity for each material was within 5% from the reference which shows the perfomance of apparatus
was acceptable. The results for extrem condition shows that higher temperature measurement was bigger resistivity
for steel based material and lower for semiconductor material.
Keywords: Resistivity measurement; four-point probe; high temperature; stainless steel; copper; semiconductor
75
Paper CS-36
The Preparation of Polyelectrolyte Complexes
Carboxymethyl Chitosan(CMC)-Pectin by Reflux Method
as a Pb (II) Metal Ion Adsorbent
Budi Hastuti1, a), Mudasir2, Dwi Siswanta2 and Triyono2
1
Department of Chemistry Education, Faculty of Faculty of Teacher Training and Education, Universitas
Sebelas Maret, Jl. Ir. Sutami 36A Surakarta, 57126, Indonesia
2
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada,Sekip
Utara, Yogyakarta 55281, Indonesia
a)
Corresponding author : [email protected]
Abstract. The aims of this research is to: (1) synthesized a stable adsorbent polyelectrolyte complexs carboxymetyl
chitosan(CMC)-pectin by reflux method, (2) Know the optimum mass ratio of CMC and Pec to form the
polyelectrolyte complexs CMC-pectin, (3) Determine the active group of the CMC-pectin, (4) Knowing the mass of
adsorbent, contact time, and optimum pH to adsorb Pb (II) metal ions. Results of this research were : (1) CMC could
be combined with pectin and cauld be used as adsorbents to adsorb Pb (II) metal ions, (2) The optimum mass ratio
CMC: pectin to form the polyelectrolyte complexs CMC-pectin was 70%: 30%, (3) an active group contained of
CMC-Pectin was a hydroxyl group (OH) and carboxylic (-COOH), (4) The optimum conditions required to adsorb
metal ions Pb (II) was 10 mg of the adsorbent, 75 minutes of contact time and on pH 5 with the high levels of Pb (II)
metal ions adsorbed by 91% and the adsorption capacity of 41.63 mg / g.
Keywords: CMC; pectin; the polyelectrolyte complexs CMC-pectin; Pb (II) metal ions
76
Paper CS-37
Reactive Blending of Linier Low Density Polyethylene
(LLDPE) and Polylactid Acid (PLA) Using Compatibizer
LLDPE-g-MA
Elfi Nur Rohmah1, a), Pius Doni B. Sinaga1, Shela Maranata1, Muhammad
Ghozali2
1
Departement of Chemical Enggineering, Sultan Ageng Tirtayasa Univesity Jl. Jendral Sudirman Km.03
Cilegon, Indonesia
2
Departement Chemistry, Lembaga Ilmu Pengetahuan Indonesia, Serpong
a)
Corresponding author: [email protected]
Abstract. This study discusses polymer composites between the LLDPE and PLA in the ratio of 100:0, 80:20,
60:40, 40:60, 20:80, 0: 100 with addition of compatibilizer of LLDPE-g-MA as much as 4 phr. Composite process
was done by means of rheomix and printed form a film with a hydraulic hot press for testing the mechanical
properties, morphological investigaton, thermal degradation and biodegradable. The test results of mechanical
properties (tensile strength and elongation at break) shown that the mechanical properties increased with increasing
the LLDPE content. Morphological investigation indicated that the composite of LLDPE / PLA has a smooth surface
indicating good compatibility between LLDPE and PLA. On testing TGA shown that thermal degradation of
composite sample decreased with decreasing the PLA content. For the test results of biodegradable indicated that
increasing the PLA content will increase the mass of the composite sample was missing. From all the test results
shown that the composite of LLDPE / PLA can be used as a plastic poly bag because it has a strength mechanical
properties and environmentally friendly because it can be degraded by microorganisms.
Keywords: polymer composite; LLDPE/PLA; mechanical properties; SEM; TGA; biodegradable
77
Paper CS-38
Biosorption of Toxic Lead (II) Ions using Tomato Waste
(Solanumlycopersicum) Activated by NaOH
Diah Permatasaria), Eddy Heraldyb), and Witri Wahyu Lestaric)
Chemistry Department, Faculty of Mathematic and Natural Science, Sebelas Maret University Ir. Sutami street
no. 36A, Kentingan, Jebres, Surakarta
a)
Corresponding author: [email protected]
b)
[email protected]
c)
[email protected]
Abstract. This research present to uptake lead (II) ion from aqueous solutions by activated tomato waste.Biosorbent
were characterized by applying Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy
(SEM), and Surface Area Analyzer (SAA). The biosorption investigated with parameters including the concentration
of NaOH, effects of solution pH, biosorbent dosage, contact time,and initial metal concentration. Experimental data
were analyzed in terms of twokinetic modelsuch us the pseudo-first order and pseudo-second order. Langmuir and
Freundlich isotherm models were applied todescribe the biosorption process. According to the experiment,
theoptimum concentration of NaOH was achieved at 0.1 M. The maximum % lead (II) removal was achieved at pH
4 with 94.5%. Optimum biosorbentdosage were found as 0.1 g/25 mL solution while optimum contact time were
found at 75 minutes. The results showed that the biosorption processes of Lead (II) followed pseudo-second order
kinetics. Langmuir adsorption isotherm was found fit the adsorption data with amaximum capacity of 24.079 mg/g
with anadsorption energy of 28.046 kJ/mol.
Keywords: biosorbent; tomato waste; lead (II) ions; kinetic; isotherm
78
Paper CS-39
Synthesis of Anatase and Rutile TiO2 Nanostructures from
Natural Ilmenite Sand
Sayekti Wahyuingsih1, a), Ari Handono Ramelan1, Edi Pramono1, Florentinus
Firdiyono1, Ariantama Djati Sulistya1, Panji Rofa Argawan1, Frenandha Dwi
Dharmawan1, Ludfiaastu Rinawati1, Qonita Awliya Hanif1
1
Inorganic Materials Research Group, Faculty of Mathematic and Natural Science, Sebelas Maret
University Indonesia
2
Metalurgy Extraction Laboratory, Central of Metallurgy Research LIPI, Serpong, Indonesia
a)
Corresponding author : [email protected]
Abstract. Nanostructure anatase and rutile type TiO2 were synthesized by hydrothermal method using natural
ilmenite sand as the starting materials. Anatase TiO2 and rutile TiO2 (high crystallinity) with the diameters of 20–
100 nm were obtained by calcined soluble ilmenite sand produced by leaching process. Calcinations of the xerogel
TiO2 from liquour products were conducted for 4 h at 400oC, 600oC and 800oC (in air), respectively. The samples
were characterized by XRD, STA, SEM, TEM, SAED, HRTEM, and BET surface area. This synthesis method
provides a simple route to fabricate nanostructure TiO2 from low cost material.
Keywords: imenite; anatase; rutile; TiO2; nanostructure
79
Paper CS-40
Effect of Varieties Composition of Wall Material on
Physical and Chemistry Characteristics of
Microcapsulated Kaffir Lime Leave Oleoresin (Citrus
Hystrix DC)
Zhulfani Nur Latifatunissaa), Kawijib), Lia Umi Khasanahc), and Rohula Utamid)
Department of Food science and Technology, Agriculture Faculty, Sebelas Maret University,
Jl. Ir. Sutami 36A Surakarta 57126 Indonesia
a)
Corresponding author: [email protected]
b)
[email protected]
c)
[email protected]
d)
Corresponding author : [email protected]
Abstract. This study aimed to determine the effect of variety composition of wall material on characteristic of
microcapsulated kaffir lime leave oleoresin which include yield, water content, solubility in water, microstructure,
residual solvent content and active compound content. This study used variety composition of maltodextrin and
carrageenan (100% : 0%; 97% : 3%; 95% : 5% ; 90% :10% ) as wall material, and kaffir lime leave oleoresin as core
material which was extracted by maceration using ethanol as solvent. Analysis’s result showed that the varieties
composition of wall material influenced on yield and water content significantly. However, there was no significant
influence discovered in solubility in water and residual solvent content. Active compounds contained in the product
of oleoresin microcapsules kaffir lime leaves are citronella, citronellol, citronellyl acetate, nerolidol, phytol, farnesol
while the levels of residual solvents in this study ranged from 0.01-0.015%. Based on experiment result showed that
use carrageenan can produce preferable microstructure.
Keywords: carrageenan; kaffir lime leaveoleoresin; maltodextrin; microencapsulation; wall material
80
Paper CS-41
Facile Synthesized Blue Luminescent Carbon Nanodots
from Mangosteen Peel
Mahardika Prasetya Ajia), Susanto, Aan Priyanto, Amelia Cristina and Sulhadi
Department of Physics, Faculty of Mathematics and Natural Science, Universitas Negeri Semarang, Jalan Raya
Sekaran Gunungpati 50229 Indonesia
a)
Corresponding author: [email protected]
Abstract. Blue luminescent carbon nanodots from mangosteen peel has been successfully synthesized by
microwave. Mangosteen peel were extracted using 1 M HCl solutions. The extracted then mixed with urea in various
1 g up to 6 g. The precursor solutions were irradiated using 450 W microwave along 10 minutes. Carbon nanodots
from mangosteen peel have blue luminescent emission. Absorbance spectra of carbon nanodots wider as increasing
the amount of urea. Band gap energy of carbon nanodots from mangosteen peel has in order of range 2.7-2.8 eV. The
band gap energy of carbon nanodots decreases as increasing of urea while the emissions shift to greenness colors.
The facile synthesized carbon nanodots from mangosteen peel and its blue luminescent shows that mangosteen have
great potential to develop as photoluminescent material.
Keywords: Carbon nanodots; mangosteen peel; luminescent
81
Paper CS-42
The Tensile and Impact Strengths of Board Produced by
Recycling of Alumunium Foil Waste With Pressured
Sintering Process
Heru Sukantoa) and Triyonob)
Mechanical Engineering Department,Sebelas Maret University,57126 Surakarta, Indonesia
a)
Corresponding author: [email protected]
b)
[email protected]
Abstract. Aluminum foil sachet waste has potential to becomes alternative materials such as board. The research
was developed to investigate the effects of compaction pressure toward the characteristics of board resulted from
aluminum foil sachet waste recycling. The recycling applied method was pressured sintering process. The
temperature and time of sintering were maintained at 135 oC and 10 minutes respectively. The sintering pressure
(compaction) parameter was set at the four elevated numbers they were 0.5, 1, 1.5, and 2 bars. The board strengths
were tested under tensile and impact loads according to ASTM standard test. The result reveals the increasing of
compaction pressure produces the board become stronger in tensile strength whereas the impact strength shows the
decreasing trend. The board is recommended to substitute plywood application according to the both strengths
criteria above.
Keywords: Board Produced; Recycling; Sintering Process
82
Paper CS-43
Adsorption of Procion Red Mx 8b Using Spent Tea as
Adsorbent
Riesta Ramdhaniyati Osaa), Eddy Heraldy, and Venty Suryanti
Departement of Chemistry, Faculty of Mathematics and Natural Science, University of Sebelas Maret, Jl. Ir.
Sutami 36 A, Kentingan Surakarta 57126
a)
corresponding authors : [email protected]
Abstract. The adsorption of Procion Red MX 8B using spent tea leaves (STL) as adsorbent, has been studied by
batch adsorption technique. The adsorbent was activated by NaOH 4% along 24 hours for delignification process.
The adsorbent was characterized using FTIR to indetify the functional groups of cellulose which is shown by uptake
-OH, C-H and C-O. The optimal conditions of adsorption experiments were achieved when pH was set as 6 with
contact time 75 minutes and capacity of adsorption was 3,28 mg/g. The equilibrium data were fitted to Langmuir and
Freundlich isotherms. The kinetic models, Pseudo First Order and Pseudo Second Order were employed to describe
the adsorption mechanism. The experimental results showed that the Pseudo Second Order equation is the best
model that describes the adsorption behavior with the coefficient of correlation R2 ≥0,99. The results suggested that
STL has high potential to be used as effective adsorbent for Procion Red MX 8B removal.
Keywords: adsorption; spent tea leaves; dyes; procion red mx 8B
83
Paper CS-44
Comparative Study of Mechanical Properties of
Lightweight Concrete Using Mixed Waste Styrofoam
(Recycle) and Original Styrofoam
Rima Sri Agustin1, a) and Sarjono Puro2, b)
1 Program Studi
Pendidikan Teknik Bangunan Fakultas Keguruan dan Ilmu Pendidikan,
Universitas Sebelas Maret Surakarta
Jl.Ir Sutami No.36A Kentingan Surakarta 57126
2 Program Studi Teknik Sipil Fakultas Teknik, Universitas Bung Karno
Jl.Kimia No.20 Jakarta 10114
a)
Corresponding author: [email protected]
b)
[email protected]
Abstract. Lightweight concrete made with the addition of styrofoam can be called styrocon. Styrofoam added into
the concrete mix, to replace the coarse aggregate. Styrofoam granules, famous with white cork are generally derived
from electronic waste and waste wrapping infotainment. The use of styrofoam as a mixture of lightweight concrete
will reduce the total weight of the building, thus reducing the size of foundation. The aim of this study was to
determine of mechanics propertiescof lightweight concrete adding original styrofoam and recycling styrofoam for
non-structuralcc: compressive strength, tensile strength and flexural strength. Testing the compressive strength the
age of 7, 14, 21 and 28 days. Testing the split tensile strength and flexural strength testing is done at the age of 28.
The specimen using cylinder size Ø 15 cm height 30 cm, and the flexural strength test specimen using beam length
60 cm, width 20cm, thickness 6 cm. The test results of compressive strength of the overall mix using original
styrofoam higher than the waste styrofoam on the other hand the results of tensile strength test can be said in general
the mixture which uses waste styrofoam is higher than that using the original styrofoam.
Keywords: lightweight concrete; styrofoam; compressive strength; tensile strength; flexural strength
84
Paper CS-46
Characteristics of Nanosilica Coating Deposited by PDC
Electrophoresis on Stainless Steel
Substrate
Ni Made Intan Putri Suari and Heru Setyawana)
Department of Chemical Engineering, Sepuluh Nopember Institute of Technology, Surabaya, Indonesia
a)
corresponding author: [email protected]
Abstract. The purpose of this paper is to study the nanosilica deposition process on stainless steel by pulsed direct
current (PDC) electrophoresis and to investigate the effect of PDC parameters on silica film characteristics. Silica sol
made of sodium silicate was used as the electrolyte solution. The frequency, amplitude and duty cycle of PDC were
evaluated. The frequency, amplitude and duty cycle of PDC were varied in the range of 30-80 Hz, 0.1-0.6 Volt and
30-80%. The morphology of silica film was observed by scanning electron microscopy (SEM) and the corrosion
protection properties of the silica films were analyzed by electrochemical impedance spectroscopy (EIS) in 2 wt%
NaCl solution. The experimental results showed that by PDC electrophoresis a good corrosion protection
characteristics of silica films (high pore resistance and low admittance) were produce. The corrosion protection
characteristics of silica films were affected by the frequency, amplitude and duty cycle of PDC. By increasing the
frequency, could be produced the more uniform silica films. The high pore resistance (788.290 ohm) and the low
admittance (0,00087573 Mho) of silica film was produced at the frequency of 80 Hz, amplitude of 0.5 volt and duty
cycle of 60%.
Keywords: nanosilica; coating deposited; electrophoresis; stainless steel
85
Paper CS-47
MR Performances of Bidisperse MR Fluids Utilizing
Superparamagnetic Maghemite Nanoparticles
Siti Asma’ Nikmat Leong1, b), Saiful Amri Mazlan2, a), Ubaidillah1, 3, c),
Pakharuddin Mohd Samin1, d) and Ani Idris4, e)
1Automotive Engineering Department, Faculty of Mechanical Engineering, Universiti Teknologi Malaysia,
81310 Skudai, Johor, Malaysia
2Vehicle System Engineering, Malaysia-Japan International Institute of Technology,Universiti Teknologi
Malaysia, 54100 Jalan Semarak, Kuala Lumpur, Malaysia
3Mechanical Engineering Department, Faculty of Engineering, Universitas Sebelas Maret, Jl. Ir. Sutami 36A,
Kentingan, Surakarta, 57126
4Department of Chemical Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia
a)
Corresponding author: [email protected]
b)
[email protected]
c)
[email protected]
d)
[email protected]
e)
[email protected]
Abstract. Magnetorheological (MR) fluids consisted of micron-size particles generally often faces the instability
problem due to the large density mismatch between the large particulate matter and continuous oil medium.
Recently, researches have been conducted on the advantages of bidisperse fluids that is a mixture of micron and
nano-sized magnetic particles. In this work, laboratory prepared maghemite nanoparticles (γ-Fe2O3) with average
size of 10 nm were utilized as a substitute for the MR fluids comprising carbonyl iron (CI) to reduce the
sedimentation rate of the MR fluids. Three different fluids with the same solid concentration of 80.98% have been
prepared to contain 5 and 10% substitution of γ-Fe2O3 nanoparticles to the CI particles and the monodisperse CI
particles for comparison purpose. The sedimentation rate was measured by optical tracking of the interface between
the carrier liquid and particle suspension that formed in the fluids over time. The rheological properties of the
bidisperse MR fluids were investigated using the rheometer with a parallel-plate measuring cell under the different
applied magnetic fields and shear rates. The results indicated that the sedimentation rate was reduced considerably.
Moreover, by replacing only 5% of CI particles with γ-Fe2O3 nanoparticles, the yield stress was increased. The
formation of heterogeneous aggregates was considered to improving the stability of the fluids and easier building of
well-arranged field-induced structures. Therefore, the MR fluids performances were improved in general.
Keywords: Magnetorheological fluid; Maghemite Nanoparticles; Bidisperse MR fluid; MR performance; Stability
86
Paper CS-48
Effect of Sintering on Thermoluminescence Response of
CaSO4:Dy in PTFE Composites
Nunung Nuraenib) , Freddy Haryantoa) , Ferry Iskandarc) and Abdul Warisd)
Institute Technology Bandung
a)
Corresponding author: [email protected]
b)
[email protected]
c)
[email protected]
d)
[email protected]
Abstract. CaSO4:Dy and CaSO4:Dy-PTFE (Poly Tetra Fluoro Ethylene) composite was investigated. TLD
CaSO4:Dy was prepared by using precipitation method with PTFE addition as the matrix which has mass ratio of
2:3. The sintering treatment was done to TLD CaSO4:Dy at temperature of 700°C for 1 hour and to TLD CaSO4:DyPTFE composite ranging from 600, 700, and 800°C for 1 hour. The obtained samples were characterized using a
fourier-transform infrared (FTIR) to observe the atomic bonding in sample and X-ray diffraction (XRD) to observe
crystal of the sample. From experimental result, the thermoluminescence intensity of pure CaSO 4:Dy, CaSO4:Dy
after sintering at 700 °C, and CaSO4:Dy-PTFE composite after sintering at 600, 700, and 800 °C are 57.03, 75.15,
336.89, 1191.11, and 319.89 nC, respectively. It’s a significant increasing of thermoluminescence intensity in
CaSO4:Dy-PTFE composite after sintering at 700°C.
Keywords: CaSO4:Dy; thermoluminescence; PTFE; sintering
87
Paper CS-49
XRD Studies on The Effect of Thermal Treatment and
Relative Humidity on The D-Spacings of Polyvinyl Alcohol
Montmorillonite Nanocomposites
Khairuddin1, a), Francis Clegg2, Chris Breen2
1
2)
Jurusan Fisika FMIPA, Universitas Sebelas Maret Surakarta 57126 INDONESIA
Materials and Engineering Research Institute, Sheffield Hallam University, England S1 1WB
a)
Corresponding author:[email protected]
Abstract The effect of temperature and relative humidity on the d-spacing of clay in PVOH composites has been
investigated, since it can be significantly affected by any associated water. XRD traces were collected from samples
after heating for 10 minutes at 80 °C and 150 °C and then after cooling and equilibrating for 24 hours at 20 °C and
50% RH, the samples were then equilibrated for 24 hours at 20 °C and 85% relative humidity.The relative
humidities of 50% and 85% were achieved by placing saturated magnesium nitrate and potassium chloride salt
solution, respectively in a humidity chamber.It was found that the dspacings of these simple systems is influenced
by clay loading, the thermal history of the sample and their ability to rehydrate after heating. As the PVOH loading
increases, the general extent of change of the d-spacings within the different conditions decreases showing less
influence from the water is being experienced. This also suggests that less water is present in the clay gallery as
more PVOH is added. At high clay loadings of 98 to 85 wt%, the single and bilayer structures are both present to
different degrees depending upon the treatment that the particular sample has undergone, whilst at intermediate clay
loadings of 75 to 50 wt% the intercalated structures show thermal and environmental stability.
Keywords: Polyvinyl alcohol; montmorillonite; d-spacing; thermal treatment; relative humidity; x-ray diffraction
88
Paper CS-50
Effect of Acoustic Perturbation on the Bed of Nanopowder
Ebrahim Al-Ghurabib) and Mohammad Asifa)
Saudi Arabia King Saud University
a)
Corresponding author: [email protected]
b)
[email protected]
Abstract. Ultrafine nano-powders possess tremendously surface area which can be exploited to enhance the surface
based rate process. This unique feature of nano-powders makes them quite attractive for a wide variety of
applications that range from small-scale process development to large-scale industrial production. Their effective
utilization could however be severely compromised due to the formation of large agglomerates caused by the strong
Van der Waal forces. The size of agglomerates can sometimes reach several orders of magnitude larger than the
primary particle size of the powder. The phenomenon of agglomeration severely compromises the effectiveness of
nano-powders, thus necessitating the use of techniques that can help promote their de-agglomeration. In order to
promote the de-agglomeration and remove non-homogeneities, acoustic perturbations are introduced in the bed using
a loudspeaker placed at the top of the bed. The effect of acoustics is monitored by recording the pressure transients
in the bed using fast response pressure transducers connected to a computer-controlled data acquisition system.
Several pressure transients were recorded by locating the pressure taps at different heights along the bed. These
transients include local, global as well pressure-drop across the distributor. In all cases, two pressure taps were
located at diametrically opposite sides of the bed to examine the occurrence of radial bed non-uniformity. Thus, two
sets of pressure transient data were obtained for each case. The bed was subjected to acoustic perturbations of
different frequencies, viz. 100, 150, 200 and 220 Hz while the flow of ambient air was monitored using electronic
flowmeter. In all cases, mean values and fluctuations in the pressure drop were computed. From the data, the
agglomerate size was computed and compared with the case when there are no acoustic perturbations, thus
quantitatively determining the effect of acoustic perturbation on the bed.
Keywords: Acoustic; Nano-powder; Agglomerates; Pressure transients; Frequency
89
Paper CS-51
The Insilico Study of Pyrroyl-2-Carboxyl-S-PCP
Formation during Biosynthesis of The Natural Product
Pentachloropseudilin from Actinoplanes sp.
Sri Mulyani1, a), Paramasri Dirgahayu2, Veit Weichold3, and Karl-Heinz van Pée
3
1
Department of Chemistry Education, Faculty of Education and Teacher Training,
Universitas Sebelas Maret Surakarta,
Jl. Ir. Sutami 36A Kentingan, Surakarta 57126, Indonesia;
2
Parasitology Section, Faculty of Medicine, Universitas Sebelas Maret Surakarta,
Jl. Ir. Sutami 36A Kentingan, Surakarta 57126, Indonesia;
3
Institute of Biochemistry, Faculty of Mathematics and Natural Sciences, TechnischeUniversitӓt Dresden,
Bergstrasse 66, Dresden D-01069, Germany
a)
Corresponding author: [email protected]
Abstract. Several pharmaceutically important natural products have pyrrole moities. Analyses of the biosynthesis of
these natural products have shown that the pyrrole moiety is often derived from L-proline as the biosynthetic
precursor. This is the case for the pyrrole moieties of clorobiocin, coumermycin A1, undecylprodigiosin,
pyoluteorin, leupyrrin, and nargenicins system. The conversion of L-proline to pyrroyl-2-carboxy-S-PCP is
performed by the coordinated action of three proteins CloN3/CloN4/CloN5, CouN3/CouN4/CouN5,
RedW/RedM/RedO, PltE/PltL/PltF, Leu6/Leu5/Leu7, and NgnN3/NgnN4/NgnN5, respectively. The potential
pentachloropseudilin biosynthetic gene cluster from Actinoplanes sp. ATCC 33002 was identified in 2005 by K.
Mann (TechnischeUniversität Dresden, unpublished). The gene cluster contains three genes, pcpA, pcpB, and pcpD,
which show high sequence homology to genes involved in formation of the pyrrole ring during biosynthesis of the
above mentioned natural products. The three proteins use an NRPS-like mechanism to tether an amino acid to a
peptidyl carrier protein for downstream modification. Biochemical studies of the three proteins in vitro were
complicated, thus we used in silico analysis to study the biosynthesis of pyrrole moiety in pentachloropseudilin
biosynthetic pathway using homology modelling and ligand docking analysis. Multiple alignment was performed
using Clustal W2, alignment3D using Blast, and homology modelling were analysis by SWISSMODEL from the
ExPASY web site (http://swissmodel.expsy.org). Substrates for docking were drawn in Chemskecth
(www.acdlabs.com) and ISIS draw, and docking analysis was carried out using ArgusDock (www.arguslab.com).
Keywords: Pentachloropseudilin; pyrroyl-2-carboxyl-S-PCP; Actinoplanes
90
Paper CS-52
The Effect of Copper-Fiber Addition with Fly Ash in The
Dreux Method - High Quality Concrete on Compressive
Strength, Split Tensile Strength and Modulus of Elasticity
Slamet Prayitno1, a), Endang Rismunarsi2, b), Nuranda Qhiqy Rachmawati3, c)
1
Lecturers of Civil Engineering Department of Engineering Faculty of Sebelas Maret University
Lecturers of Civil Engineering Department of Engineering Faculty of Sebelas Maret University
3
Student of Civil Engineering Department of Engineering Faculty of Surakarta Sebelas Maret University
2
a)
Corresponding author: [email protected]
b)
[email protected]
c)
[email protected]
Abstract. Reinforced concrete structure is the one is very reliable for its strength today, and used widely in the
construction of high-rise building, long-span bridge, towers, and so on. Such the structure requires high-quality
concrete structure with greater compressive strength of 6,000 psi or 41,4 MPa (SNI T-15-1990-03) used to support
all loads with very slim dimension of structural component. Therefore, the construction experts should improve their
planning system and material quality so that this high-quality concrete design is adequate for the civil building
structure. High quality-Dreux method concrete is a design of composite concrete developed by Prof. George Dreux
with compressive strength > 41.4 Mpa. The objective of research was to find out the effect of copper fiber addition
on the mechanic properties of concrete including compressive strength, split tensile strength, and modulus of
elasticity. The tested object in this research was a cylinder in 15 cm x 30 cm dimension for testing compressive
strength, split tensile strength, and modulus of elasticity. The testing instrument used was Compression Testing
Machine (CTM). The result of research showed that the scores of compressive strength, split tensile strength, and
modulus of elasticity of high-quality concrete increased after the addition of copper fiber 1% of volume weight. In
the optimum addition of fiber level provided scores of compressive strength, split tensile strength, and modulus of
elasticity of 7.89%, 31.67%, and 87.42%, respectively compared with the high-quality concrete without fiber.
Keywords: High-quality concrete; Copper fiber; fly ash; compressive strength; split tensile strength; modulus of
elasticity
91
Paper CS-53
Effect of Sintering Temperature and Screen Printing Type
on TiO2 FilmMorphology for Dye Sensitized Solar Cell
Agus Supriyanto, Lutfi Furqoni, Risa Suryana and Fahru Nurosyid a)
Physics Department, Faculty of Mathematics and Natural Sciences,
Sebelas Maret University (UNS)
a)
Corresponding author: [email protected]
Abstract. Titanium dioxide (TiO2) thin films were deposited by the screen printing method. This study was
conducted to determine the effect of sintering temperature and screen printing type on TiO2 film morphology and the
performance of the dye sensitized solar cells (DSSC). TiO2 is used in Dye Sensitized Solar Cell TiO2 as the electrode
of DSSC. The screen used to deposition of TiO2 film has a variation with a size type of the mesh T-49, T-55 and T61. Then thin film of TiO2 treated sintering temperature with variation of 600oC and 650oC for 60 minutes. TiO2
film morphology was observed by Nikon Digital Microscopy. TiO2 film in the fabrication of the screen -type T-49
has a larger crack than others . The cracks big has influence on electron transport pitch excitation of the dye. DSSC
efficiency values obtained from the deposition of TiO2 with a screen-type T-61 and sintering temperature 650oC has
the greatest result of 1.5x10-2%.
Keywords: DSSC; TiO2; type of screen printing; sintering temperature
92
Paper CS-54
Synthesis of Spinel MgAl2O4 Nanoparticles by A Metaldissolved Method
Suminar Pratapaa) and Chairatul Umamahb)
Institute of Technology Sepuluh Nopember
a)
Corresponding author: [email protected]
b)
[email protected]
Abstract. The formation of spinel (MgAl2O4, abbreviated as MA) nanomaterial is reported. The powder were
prepared by a metal-dissolved method. The synthesis of MA involved Mg powders with various weight
compositions (4.8; 10.0; 20.0; 30.0; 40.0; and 60.0%) and Al (with composition to normalize the percentage)
powders as the raw materials, which were independently dissolved in 37% HCl to form MgCl2 and AlCl3 solutions.
Both solutions were then mixed and stirred for 5 hours and dried to temperature about 100-105°C to produce
powders with different weight compositions. Each powder resulted from drying was characterized using DSC-TGA,
and then calcined at 650°C, 750°C and 850ºC for 1 hour. The calcined powder was characterized using XRD
followed by qualitative and quantitative analyses using Rietica and MAUD. It was found that MA samples contained
only MA and periclase. The addition of Al increased the weight fraction of MA and reduced weight fraction of
periclase. The relative weight fraction of MgAl2O4 increased up to 99.9% for 95.2 wt% Al. The average crystallite
size of MA obtained at each temperature of 650°C, 750°C and 850°C were 9 nm, 11 nm and 14 nm.
Keywords: Spinel MgAl2O4; Metal-dissolved Method; Nanoparticles
93
Paper CS-55
Low Pressure Hand Made PVD System for High
Crystaline Metal Thin Film Preparation in MicroNanometer Scale
Ahmad Rosikhina), Toto Winatab), Aulia Fikri Hidayatc), Ibnu Syuhadad), and
Rinaldo Marimpule)
Physics of electronics materials research division, Institute Technology Bandung
a)
Corresponding author: [email protected]
b)
[email protected]
c)
[email protected]
d)
[email protected]
e)
[email protected]
Abstract. High crystalline metal thin film preparation in application both for catalyst substrate or back electrode in
electronic devices can not be underestimated in material functional research and development. A device will not
work properly when the number of metal particles not fully sticked. In this report, a hand-made physical vapor
deposition (PVD) system for high crystalline thin film preparation has been discussed. Metal evaporation process is
not only influenced by low pressure of the chamber but also appropriate current for melting purpose. according to
scanning microscope electron images, it shows that uniform particle size include its morphology properties can
obviously observed, in addition the XRD characterization supports the quality of resulted in materials.
Keywords: vacuum system; metal thin film; melting point; evaporation
94
Paper CS-56
Corrosion Behavior of PANI/SiO2 Composite in Synthetic
Geothermal Atmosphere
Triwikantoro1, a), Munasir1, 2, b), R. Baessler3, c), M. Zaenuri1, Darminto1
1
Department of Physics, FMIPA, Institut Teknologi Sepuluh Nopember
2
Department of Physics, FMIPA, Universitas Negeri Surabaya
3
Department of Corrosion and Corrosion protection, Federal Institute of Materials Research and Testing D12205 Berlin Germany
a)
Coresponding author: [email protected]
b)
[email protected]
c)
[email protected]
Abstract. An extraction of silica from natural sands of Bancar-Tuban East Java Indonesia, has been conducted by
means of alkalifusion route using NaOH and mechanical alloying using planetary ball milling. The PANI/SiO 2
Composite system has been coated in steel surfaces using painting methode. This study was designed to obtain
PANI/SiO2 as coating materials to improve corrosion ressistance in geothermal atmosphere. The filler materials in the
composite system consist of micro-SiO2 and nano-SiO2. The structure of synthesized SiO2 be characterized using XRD.
Corrosion behavior of PANI/SiO2 composite has been tested using electrochenical impedance spectroscopy in synthetic
geothermal atmosphere (Nord Deutsche Backen/NDB soluton). Based on XRD-Patterns and TEM show that the stucture
of produced SiO2 are micro, nano and amorf. The structures of filler have influenced to corrosion resistance in
geothermal atmosphere significantly. The addition of nano-SiO2 in the PANI matrix influenced corrosion resistance
better than micro-SiO2 filler qualitatively. The micro- and nano-SiO2 have high potensial as a anti-corrosion material in
geothermal atmosphere.
Keywords: microsilica; nanosilica; corrosion resistance; geothermal atmosphere
95
Paper CS-57
Green Synthesis of ZnO Nanoparticles via Complex
Formation by Using Curcuma
Longa Extract
Is Fatimaha) and Septian P. Yudhab)
Chemistry Department, Islamic University of Indonesia UII, Jl. Kaliurang Km 14, Sleman, Yogyakarta
a)
Corresponding author: [email protected]
b)
[email protected]
Abstract. Synthesis of ZnO nanoparticles(NPs) were conducted via Zn(II) complex formation by using Curcuma
longa extract as template. Curcuma longa extract has the ability to form zinc ions complex with curcumin as ligating
agent. Study on synthesis was conducted by monitoring thermal degradation of the material. Successful formation of
zinc oxide nanoparticles was confirmed employing x-ray diffraction, surface area analysis and transmission electron
microscopy studies. The NPs exhibited excelent photocatalytic activity for rhodamin B degradation and also
significant antibacterial activity for Eschericia coli.
Keywords: ZnO; nanoparticle; Curcuma longa; photocatalysis
96
Paper CS-58
Nanotechnology for Environmental Sustainability
Maridi1, a), Putri Agustina2, b), and Alanindra Saputra1, c)
1
Biology Education Department, Faculty of Teacher Training and Education, University of Sebelas Maret
Biology Education Department, Faculty of Teacher Training and Education, Universitas Muhammadiyah
Surakarta
2
a)
Corresponding author: [email protected]
b)
[email protected]
c)
[email protected]
Abstract. This is a review about potential positive effects of nanotechnology-based materials and devices on the
environmental sustainability. This article are discussed about the application of nanotechnology in several cases for
environmental sustainability such as environmental sensing and detection, remediation, water, soil conservation, and
life cycle assessment. Rising prices for raw materials and energy, coupled with the increasing environmental
awareness of consumers, are responsible for a flood products on the market that promise certain advantages for
environmental and climate protection. Nanomaterials exhibit special physical and chemical properties that make
them interesting foir novel, environmentally friendly products. Nanotechnology plays several role in environmental
monitoring and sensing such as air monitoring, water monitoring, remediation and treatment. In environmental
sensing and detection, novel nano-engineered technologies provide more sensitive and reliable air and water
monitoring solutions. In case of remediation, remediation nanotechnology use chemical conversion mechanisms like
oxidation and reduction for removing contaminants from environment. Other potential positive effects of
nanotechnology in water monitoring are water desalination and purification technology. In air monitoring,
nanotechnology is usefull technology for carbon dioxide capture and Storage schemes and hydrogen production from
sunlighty-artificial photosynthesis. From the discussion of this review we know that nanotechnology has potential
positive effects for the environment, although it is also has the potential risk.
Keywords: Nanotechnology; environment; sustainability
97
Paper CS-59
X-Ray Diffraction (XRD) Study of Semiconductor
Material Al Doped ZnO Respected to Sintering
Temperature
Dewi Utami1, b),Agus Kurniawan2, c), Syamsul Hadi1, a), and Suyitno Suyitno1, d)
1
Sebelas Maret Univresity
Industrial Machine Engineering Department Polytechnic
2
a)
Corresponding author: [email protected]
b)
[email protected]
c)
[email protected]
d)
[email protected]
Abstract. The pellet of semiconductor material Al doped ZnO has been synthesized using zinc nitrate tetrahydrate
and aluminum nitrate ninehydrate. Citric acid was added as a chelating ligand to complex the different cations. The
pellet was prepared by soft chemistry synthesis with 2 wt % aluminum. The morphology and structure of pellet have
been confirmed by X-ray diffraction (XRD) measurements. The pellet sintering in temperature 1100ºC, 1200ºC,
1300ºC, 1400ºC, and 1500ºC for 2 hours in furnace. The effect of different sintering temperature was investigated.
Crystallite size analyzed using FWHM method with the Scherrer Equation. Al crystallite substituted to ZnO in order
to form ZnO crystallite. Usually only 3 peaks that count in the equation. The highest peak has the smallest FWHM.
The biggest ZnO particle has been identified in the highest temperature sintering pellet. Particle size and crystallite
size has no relation. Pellet with sintering 1300ºC has the smallest ZnO crystallite.
Keywords: Sintering; Semiconductor material; Temperature; XRD; Crystallitation; ZnO
98
Paper CS-60
Optimizing Deacetylation Process for Chitosan Production
from Green Mussel (Perna viridis) Shell
Yc. Danartoa) and Sperisa Distantinab)
1
a)
Sebelas Maret University
Corresponding author: [email protected]
b)
[email protected]
Abstract. The green mussel (perna viridis) shell waste could be utilized for chitosan production because it contained
chitin. Chitin can be derived into chitosan through the deacetylation process. Chitosan is a polysaccharides polymer
that is readily soluble in dilute acid solution and easily modified into other useful compounds. This research aimed to
study the chitosan production from green mussel shells. This experiment had the following stages, deproteinization
process aimed to eliminate the protein content using 1N NaOH solution, demineralization process aimed to remove
minerals in green mussel shells as CaCO3 using 1 N HCl solution and decolorization process aimed to eliminate the
color pigments and other impurities using ethanol solvent. All process above resulted chitin. Furthermore, chemical
modification of chitin into chitosan by deacetylation process. This stage was very important because it greatly
affected the chitosan properties. This research studied two different treatment for deacetylation process. The first
treatment was deacetylation process using a low concentration of NaOH solution (15% w), at room temperature for
24 hours extraction while the second treatment was the deacetylation process using concentrated NaOH solution
(50% w), at high temperatures (90 - 100 °C) for 2 hours extraction. The results showed that deproteinization,
demineralization, and decolorizaton was capable of removing protein, mineral, and pigment. This experiment yield
chitin 40.5%w. Chitosan yield from first treatment was 39.5%w and it was better than second treatment. Chitosan
from second treatment had 79.8% degree of deacetylation and 16.5 kDa molecular weight. It was better than first
treatment.
Keywords: Chitin; chitosan; green mussel shell; deacetylation
99
Paper CS-61
Characterization of Nickel-Based Superalloy Material
Suharnoa), Budi Harjanto, Yuyun Estriyanto
Dept of Mechanical Engineering Education, Faculty of Teaching & Science Education, Universitas Sebelas
Maret, Jl. Ir. Sutami 36A, Surakarta, Central Java, Indonesia. (Telephone: +6281329029252)
a)
Corresponding author: [email protected]
Abstract. Has done research on aircraft turbine blades made of Inconel (nickel-based). This study aims to describe
the characteristics of crack on the failure of turbine blade made from Inconel and efforts to rectify the failure of the
material. Inconels are nickel-base superalloy material that has high strength and creep resistance at temperatures near
Reviews their melting point. This material is commonly used in aircraft gas turbine (jet) engines, where parts or
components are subjected to high temperature and high stress. Research methods include testing the chemical
composition, hardness with HVN, microstructure, and SEM. The results show that the turbine blades are attached to
the APU classified material nickel-based super alloy Inconel 792. This kind indicated by the content of 63% Ni and
18% Cr. This material includes a very hard material that is characterized by its hardness is 412 HVN numbers so it is
susceptible to cracking. Based on SEM test show that structure formed at the grain boundary carbides and Gammaprime precipitates are also available within the gamma matrix.
Keywords: Turbine blades; physical and mechanical tests; nickel-base superalloy materials
100
Paper CS-62
Bayah Zeolite Size Reduction Effects on The Physico
Chemical Properties and The Absorption Rate of The
Potassium Permanganate (KMnO4)
Siti Mariana Widayanti1, a), Khaswar Syamsu1, Sri Yuliani2 dan Endang
Warsiki1
1
Institut Pertanian Bogor
2
Balai Besar Pascapanen Pertanian
a)
Coresponding author : [email protected]
Abstract The last few years of research on nano technology has been developing very rapidly, not least the use of
nano-zeolites. Nano-sized material is said to have various advantages including expanding field of absorptive
surfaces which enhance the absorption material and shorten the time adsorbsion. The use of zeolite as a binder
KMnO4 has also done many of them to extend the shelf life of vegetables and fruits. This study was conducted to
determine the physico chemical properties of zeolites of several particle size and influence on the absorption of
KMnO4 which is a strong oxidizing agent that is widely used in reducing the amount of ethylene in the process of
storage of fresh horticultural products. The treatment consisted of (1) the length of time milling (20, 40, and 60
minutes) and (2) The length of zeolite activated wit KOH 1 N ( 2, 24 and 48 hours). Physical and chemical
properties of zeolite were analyzed using BET analysis, PSA, XRD and SEM. The study was designed using a
randomized block design. The milling time significantly affect to the size of the zeolite. Also sinificantly affect to
the speed of adsorption of zeolite against KMnO4. Milling time for 60 minutes resulted in a zeolite with the physico
chemical properties of the best in absorbing KMnO4.
Keywords: zeolite; potassium permanganat; milling
101
Paper CS-23
Structural Properties of Al-Doped Li4Ti5O12 Synthesized
by Solid State Reaction Method
Dianisa Khoirum Sandi1, a), Slamet Priyono2, b), and Risa Suryana1, c)
1
Department of Physics, Faculty of Mathematics and Natural Sciences, Sebelas Maret University, Indonesia
2
Physics Research Center (P2F)-LIPI, Puspiptek Area, Serpong, Tangerang, Indonesia
a)
Corresponding author: [email protected]
b)
[email protected]
c)
[email protected]
Abstract. Al-doped Li4Ti5O12 powders were synthesized by solid state reaction method. X-ray diffraction was
employed to determine the structure of LiTiAlO4. The PDXL software was performed on the x-ray diffraction data to
estimate the phase percentage, the lattice parameter, the unit cell volume, and the crystal density. Percentage of Al
dopant was varied at x=0 x=0.025; and x =0.050. Al-doped Li4Ti5O12 has cubic crystal structure. Al-doping at x=0
and x=0.025 does not change the phase as Li4Ti5O12 while at x=0.050 the phase changes to the LiTiAlO4. The
diffraction patterns showed that the angle shifted to the right as the increase of x which indicated that Al substitute Ti
site. Percentage of Li4Ti5O12 phase at x=0 and x=0.025 was 97.8% and 96.8%, respectively. However, the lattice
parameters, the unit cell volume, and the crystal density does not change significantly at x=0, x = 0.025 and x=0.050.
Based on the percentage of Li4Ti5O12 phase, the Al-doped Li at x=0 and x=0.025 is promising as a lithium battery
anode.
Keywords: Al-doped Li4Ti5O12; Solid State Reaction; X-ray Diffraction
102
Paper CS-64
Simple Models of Reaction of Methane on Si(111)-7x7
Surfaces
Risa Suryana1, a) and Hitoshi Nakahara2, b)
1
Department of Physics, Faculty of Mathematics and Natural Sciences, Sebelas Maret University, Indonesia
2
Department of Quantum Engineering, Graduate School of Engineering, Nagoya University, Japan
a)
Corresponding author: [email protected]
b)
[email protected]
Abstract. Study of silicon carbide (SiC) films are remain promising due to its application in high-temperature, high
power, and high-frequency electronic devices. In atomic scale, it is important to understand how the silicon surface
interact with hydrocarbon gases to form the SiC nucleation on Si. In this paper was used methane as one of
hydrocarbon gases. All experiments were always performed on the Si(111)-7×7 surface. The substrates are exposed
in the methane gas while the substrate temperatures increase from RT to about 800oC. The hot tungsten filament was
used to decompose the methane gas to H and CH3. The A reflection high-energy electron diffraction (RHEED) is a
very useful to analyze the transition of structure due to decomposed hydrocarbon adsorption on the Si(111)-7×7
surface. The sequence of structure transition to obtain SiC structure are 7×7 - -7×7 - 1×1 - √3×√3 - SiC. The H
atoms and CH3 molecules arrive at the Si(111)-7x7 dimer-adatom-stacking fault (DAS) structure at RT. At RT –
-7×7 due to adatom bonds of the DAS structure are broken by H and
CH3 adsorption on the Si surface and randomly SiCH3 and SiH form on the dimer-stacking-fault frame (DSF). AT
-7×7 structure change into 1×1 structure due to desorption of H atoms and remaining of CH 3 on the
surface. The 1×1 structure formation occurs by breaking the dimer bonds and substantial dissolution of the stacking
3 desorb and carbon atoms remain on the surface. Carbon atoms diffuse
into the first layer of Si surface and induce √3x√3 structure in C-S5 configuration. For higher temperatures, up to
In order to understand the
reaction mechanism between the methane and the Si(111)-7×7DAS clearly, the simple models will be presented.
Keywords: Si(111)-7x7; Methane; RHEED Pattern; DAS Structure; Simple Models
103
Paper 65
Effect of Adhesive Thickness and Surface Treatment on
Shear Strength on Single Lap Joint CFRP/Al-2024 Using
Adhesive of Epoxy/Al-Fine-Powder
Kuncoro Diharjo1, a), Miftahul Anwar2, b), Roy Aries P Tarigan1, c), Ahmad
Rivai3, d)
1
Dept. of Mechanical Engineering, Faculty of Engineering, Sebelas Maret University, Indonesia
2
Dept. of Electrical Engineering, Faculty of Engineering, Sebelas Maret University, Indonesia
3
Dept. of Structure and Material, Faculty of Mechanical Engineering, Universiti Teknikal Malaysia, Melaka,
Malaysia
a)
Corresponding author: [email protected]
b)
[email protected]
Abstract. The objective of this study is to investigate the effect of adhesive thickness and surface treatment on the
shear strength and failure type characteristic of single lap joint (SLJ) CFRP/Al using adhesive epoxy/Al-finepowder. The CFRP was produced by using hand lay-up method for 30% of woven roving carbon fiber (w/w) and the
resin used was bisphenolic. The adhesive was prepared using 12.5% of aluminum fine powder (w/w) in the epoxy
adhesive. The powder was mixed by using a mixing machine at 60 rpm for 6 minutes, and then it was used to join
the Al plate-2024 and CFRP. The start time to pressure for the joint process was 20 minutes after the application of
adhesive on the both of adherents. The variables in this research are adhesive thickness (i.e. 0.2 mm, 0.4 mm, 0.6
mm, 0.8 mm and 1 mm) and surface treatment of adherents (i.e. acetone, chromate sulphuric acid, caustic etch and
tucker’s reagent). Before shear testing, all specimens were post-cured at 100 o C for 15 minutes. The result shows
that the SLJ has the highest shear strength for 0.4 mm of adhesive thickness. When the adhesive thickness is more
than 0.4 mm (0.6-1 mm), the shear strength decreases significantly. It might be caused by the property change of
adhesive from ductile to brittle. The acetone surface treatment produces the best bonding between the adhesive and
adherents (CFRP and Al-plate 2024), and the highest shear strength is 9.31 MPa. The surface treatment gives the
humidification effect of adherent surfaces by adhesive. The failure characteristic shows that the mixed failure of
light-fiber-tear-failure and cohesive-failure are occurred on the high shear strength of SLJ, and the low shear strength
commonly has the adhesive-failure mode.
Keywords: CFRP; adhesive thickness; surface treatment; shear strength; failure mode
104
Paper CS-66
Structural Characteristics of LiCoxMn2-XO4 via A Simple
Reflux Technique
Dyah Purwaningsih1, 2, a), Roto Roto1, b), and Hari Sutrisno2, c)
1
Department of Chemistry, Faculty of Mathematics and Natural Sciences,
Gadjah Mada University, Yogyakarta, Indonesia.
2
Department of Chemistry Education, Faculty of Mathematics and Natural Sciences,
Yogyakarta State University, Indonesia.
a)
Corresponding author: [email protected]
b)
[email protected],
c)
[email protected]
Abstract. LiCoxMn2-xO4 (x=0; 0.02; 0.04; 0.06; 0.08, 0.010) have been successfully synthesized via a facile and
simple reflux technique. The materials were characterized using X-ray diffraction (XRD), scanning electron
microscopy-energy X-ray dispersive spectroscopy (SEM-EDS) and BET Surface Area. The SEM-EDS analysis
reveals the presence of Co, Mn and O elements in the LiCoxMn2-xO4, while the XRD result reveals that the materials
have well-developed cubic crystals. The Rietveld refinement method was applied to extract structural parameters of
LiCoxMn2-xO4 using the Fullprof software in WinPlotr package program. The materials were refined in the crystal
system and space group of structures Fd3m phase were identified. The lattice parameters tend to decrease with the
decrease in x values. The highest Li-O bond length is in LiCo0.037Mn1.259O4. It is observed that there is a significant
change in BET Surface Area when mole fraction is more than 0.06
Keywords: Structural Characterization; LiCoxMn2-xO4; Reflux Technique
105
Paper CS-67
Biosorption of Remazol Yellow Dye by Rhyzopus Oryzae
Biomass Active and Biomass Immobile
Triana Kusumaningsih1, a), Khoirina Dwi Nugrahaningtyas2, Prima Vinka
Rahmayanti3
1
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Sebelas Maret, Surakarta
57126, Indonesia
Abstract. Biosorption of Remazol Yellow dye by activated biomass of Rhyzopus oryzae and immobile biomass has
been carried out. The aim of this research was to compare the ability of activated biomass of Rhyzopus oryzae and
immobile biomass at initial pH and contact time variation, and also to determine isotherm adsorption type that
occurred during adsorption process. Rhyzopus oryzae was grown in Yeast Ekstract Peptone Dextrose (YEPD) liquid
media. Rhyzopus oryzae biomass was activated by NaOH 1 M and heated at 120oC during 15 minutes, then dried at
70 oC during 12 hours. Biomass from Rhyzopus oryzae was immobilized into natrium silicate matrix and dried at 60
oC for 12 hours. The adsorption of Remazol Yellow dyes was conducted by varying pH 7-13 and contact time of 10,
20, 30, 40, 60, 80, and 100 minutes. Remazol Yellow dye sorption was analyzed by Ultraviole–Visible spectroscopy
as difference between initial concentration and final concentration. Isoterms adsorption were analyzed by Langmuir
and Freundlich isotherm. The study yield that biomass immobile has higher biosorption capacity compare to biomass
active. Optimum condition of biosorption Remazol Yellow dye by biomass active found at pH 10-11 and contact time
30 minutes, while biosorption Remazol Yellow dye by biomass immobile found at pH 12 and contact time 20
minutes. The capacity of biosorption in optimum condition for biomass active was 2.623 mg/g and biomass
immobile was 3.775 mg/g. Isoterm analysis of Remazol Yellow dye by biomass active and biomass immobile was
Langmuir isotherm.
Keywords : Biosorption, Biomass, Immobilized, Remazol Yellow, Rhyzopus oryzae
106
Paper CS-68
The Influences of Elastomer toward Degradability of Poly
(lactic acid)
Mujtahid Kaavessina1, a), Sperisa Distantina1, Achmad Chafidz2 and
Saeed M. Al-Zahrani2
1
Chemical Engineering Dep., Sebelas Maret University, Surakarta, 57126, Indonesia
2
Chemical Engineering Dep., King Saud University, Riyadh 11421, Saudi Arabia
a)
Corresponding author: [email protected]
Abstract. Poly (lactic acid)/elastomer blends were prepared via direct injection molding with the different weight
fractions of elastomer, namely: 0, 10, 20 and 30 wt%. Degradation test of poly(lactic acid) was performed by burial
in the soil. The physical appearance and thermal properties of the tested specimens were monitored periodically. The
presence of elastomer tended to significantly increase the degradability of PLA after buried for 27 weeks. With 30
wt% elastomer, the color and the surface of specimens become more white and rougher due to the degradation.
Differential scanning calorimetry (DSC) was used to evaluate thermal properties and crystallinity of all samples. It
was found that the melting temperature decreased as the amount of elastomer increased. The crystallinity showed
that the degradation of PLA is occurred firstly in amorphous phase.
Keywords: Poly (lactic acid), Elastomer, Degradation, Crytallinity
107
Paper CS-69
The Porosity Enhancement of Polyfinylidene Flouride
Nanofiber Based Membrane Prepared by Electrospinning
Hendri Widiyandari1, a) and Agus Purwanto2
1
Department of Physics, Diponegoro University,
Jl. Prof. H. Soedarto SH, Semarang, Central Java 50275, Indonesia
2
Department of Chemical Engineering, Sebelas Maret University,
Jl. Ir. Sutami 36 A, Surakarta Central Java 57126, Indonesia.
a)
Corresponding author: [email protected]
Abstract. The polyvinylidene fluoride (PVDF) nanofiber based membranes were successfully prepared by
electrospinning method with a high porosity and surface area. The structure and porosity of PVDF nanofiber were
characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), and Brunauer–
Emmett–Teller (BET) tests. The liquid flowrate, value of DC high voltage and polymer concentration affected the
porosity and surface area of the PVDF nanofiber based membrane. Increasing the liquid flow rate at adjusted
spinning duration of 45 minutes and voltage resulted the porosity and surface area increase. Furthermore, the
increasing of polymer solution concentration increased the size of the fiber however the surface area and porosity
decrease. These produced PVDF nanofiber based membranes have a potential application as a separator of lithium
ion-battery.
Keywords: PVDF; porosity; surface area; electrospinning; nanofiber
108
Paper CS-70
Porous Silica as Thermal Insulation Material from Water
Glass by Electrophoretic Deposition Method
Dini A. Rachmawati, Heru Setyawana), and Samsudin Affandi
1
Chemical Engineering Department, Faculty of Industrial Technology, Sepuluh Nopember Institute of
Technology
a)
Corresponding author: [email protected]
Abstract. Synthesis of porous silica materials from water glass (sodium silicate) have been prepared using
electrophoretic deposition (EPD) method. The sodium silicate was pass through ionic exchanger resin to make silisic
acid, continued by titration with potassium hidroxide (KOH) 2% to form silica sol with pH of 8-9.
Hexamethyldisilazane (HMDS) in isopropanol was used as surface modification agent, which were added to silica
sol under constant stirring. The precursor then was heated at 60⁰C for an hour before EPD. The electric field strength
between 25-100 V/cm were used in EPD to form silica gel. The wet gel was aged at room temperature in 24 hour
before dried in oven. The surface area of the silica particle was achieved by BET method, which ranged from 49.068
– 447.781 m2/g with pores volume ranged from 0.577 – 2.151 cm3/g. The silica particles were mesoporous based on
the average pores size, which ranged between 5 – 18 nm. The result showed that HMDS can increase the
hydrophobicity of silica, with contact angle as high as 143°. Heat insulation test was used to conduct thermal
conductivity value, which ranged between 1.68 – 2.17 W/mK. The result showed that porous silica can be used as
thermal insulation materials.
Keywords : Electrophoretic deposition; Hidrofobicity Surface modification; Thermal insulation materials
109
Paper CS-71
Improved Wear and Impact Resistance of HVOF Sprayed
Ceramic Matrix Composites Coating
B. Prawara1, a), E. Martides1, b), Priyono2, b), H. Ardy3, and N. Rikardo3
1
Research Center for Electrical Power and Mechatronic, (LIPI), Indonesia
2
Research Center for Metallurgy, LIPI, Indonesia
3
Material Engineering, ITB, Indonesia
a)
Corresponding author: [email protected]
b)
[email protected]
Abstract. Ceramic coating has the mechanical properties of high hardness and it is well known for application on
wear resistance, but on the other hand the resistance to impact load is low. Therefore its use is limited to applications
that have no impact loading. The aim of this research was to obtain ceramic-metallic composite coating which has
improved impact resistance compared to conventional ceramic coating. The high impact resistance of ceramicmetallic composite coating is obtained from dispersed metallic alloy phase in ceramic matrix. Ceramic Matrix
Composites (CMC) powder with chrome carbide (Cr3C2) base and ceramic-metal NiAl-Al2O3 with various particle
sizes as reinforced particle was deposited on mild steel substrate with High Velocity Oxygen Fuel (HVOF) thermal
spray coating. Repeated impact test showed that reinforced metallic phase size influenced impact resistance of CMC
coating. The ability of CMC coating to absorb impact energy has improved eight times and ten times compared with
original Cr3C2 and hard chrome plating respectively. On the other hand the high temperature corrosion resistance of
CMC coating showed up to 31 cycles of heating at 800°C and water quenching cooling.
Keywords: Ceramic Matrix Composite; HVOF; Cr3C2; NiAl-Al2O3 cladding
110
Paper CS-72
Effect of Precursor Concentration on the Electrical
Properties of LiFePO4 Prepared by Solvothermal Method
Ahmad Yasin Rabbani1, Hafizh Arrizal Fakhri1, Muhammad Arifin1, Akfiny
Hasdi Aimon1, and Ferry Iskandar1, 2, a)
1Physics of Electronic Materials Research Division Department of Physics, Institut Teknologi Bandung,
Bandung 40132 Indonesia http://nrcn.itb.ac.id/
2
Research Center for Nanoscience and Nanotechnology Institut Teknologi Bandung, Bandung 40132 Indonesia
a)
Corresponding author: [email protected]
Abstract. Lithium iron phosphate (LiFePO4) is frequently used for Li-ion battery cathode. LiFePO4 has the high
specific capacity at 170 mAhg-1, stable voltage at 3.45 V, stable structure, cheap, and low toxicity. The objective of
this research is investigating the effect of precursor concentration to the electrical properties of LiFePO 4 prepared by
solvothermal method. Solvothermal method has been applied to the synthesis of LiFePO 4 with LiOH, FeSO4, H3PO4,
and citric acid as the precursors. The LiOH concentration was varied from 0.3M to 1.8M. The Fourier Transform
Infrared Spectroscopy (FTIR) measurement identified the Fe-O, O-P-O, and P-O bonds which corresponding to
LiFePO4. The result of 4-point probe measurement shows that the high precursor concentration increases the
electrical conductivity.
Keywords: electrical conductivity; solvothermal method; precursor concentration.
111
Paper CS-73
Microstructure and Dielectric Properties of Ba1-xSrxTiO3
Synthesized by Solid Reaction
Anif Jamaluddin1, a), Agus Supriyanto2, b), Yofentina Iriani2, c), and Suwarni
Suwarni2, d)
1
Sebelas Maret University
Physics Department, Sebelas Maret University
2
a)
corresponding author : [email protected]
b)
[email protected]
c)
corresponding author : [email protected]
d)
[email protected]
Abstract. A fabrication of (Ba1-xSrxTiO3) with x<0,06 using solid reaction method was successfully done. Solid
row material of Barium Carbonat (BaCO3), Strontium Carbonat (SrCO3) and Titanium Oxide (TiO3) are mixed and
milled for 6 hours for fabrication (Ba1-xSrxTiO3) with variation of strontium molarity (1%, 2%, 3%, 4% and 5%) as
doping material. Then, sample (Ba1-xSrxTiO3) was sintered on temperature 1100 0C for 2 hours. A microstructure
and crystaline properties of Ba1-xSrxTiO3 were investigated using X-Ray Diffration (XRD) pattern with GSAS
(General Structure Analysis System) refinement tool. It showed that strontium was doped on structure BaTiO3. The
morphological properties was investigated by Scanning Electron Microscopy (SEM). The dielectric constant of
sample was measured by RCL meter. The result showed that lattice parameter, tetragonality, grain size and dielectric
constant of Ba1-xSrxTiO3 increased as molarity of doping strontium increased.
Keywords: Ba1-xSrxTiO3; doping; dielectric constant; lattice parameter; grain size
112
Paper CS-74
Anodized Magnesium as Battery Anode Activated by Sea
Water
Supriyono Supriyonoa), Heru Setyawanb), Samsudin Affandic)
Institut Teknologi Sepuluh Nopember
a)
Corresponding author: [email protected]
b)
[email protected]
c)
[email protected]
Abstract. Magnesium can be developed as an anode material for seawater activated battery. Anodizing is intended
to slow the corrosion rate of magnesium. Anodizing carried out in 0.01 M oxalic acid solution with magnesium as
anode and graphite as cathode. The applied voltage was varied from 0.2 to 0.8 V. After anodizing, magnesium
washed with distilled water and then dried in an oven at a temperature 100οC for 3 hours. Discharge characteristics
of magnesium as battery anode in NaCl solution 3.5% weight has been studied. The highest value of corrosion
potential (Ecorr = -1.75 V vs. Ag / AgCl) was achieved magnesium anodized in oxalic acid with a voltage of 0.2 V.
The smallest value of charge transfer resistance (Rp = 1780 Ω) and the highest value of conductivity (Y0 = 503
μMho) achieved magnesium anodized in oxalic acid with a voltage of 0.2 V. The discharge performance that
includes voltage, current density, capacity, and most large energy discharge at low discharge current (0,001 mA) and
high (0.05 mA) achieved magnesium anodized in oxalic acid with a voltage of 0.2 V.
Keywords: Anode; anodized; sea water activated battery; magnesium
113
Paper CS-75
Effect of Nano-Scale Characteristics of Graphene on
Electrochemical Performance of Activated Carbon
Supercapacitor Electrodes
Mohamad Deramana), Mohamad Redwani Mohd Jasnib), Mohd Sulemanc),
Ellisa Hamdand), Noor Ezniera Shafieza Sazalie) and Siti Aisyah Shamsudinf)
School of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600
Bangi, Selangor, Malaysia
a)
Corresponding author: [email protected]/[email protected]
b)
[email protected],
c)
[email protected],
d)
[email protected],
e)
[email protected],
f)
[email protected]
Abstract. Graphene with its typical nano-scale characterisrtic properties has been widely used as an additive in
activated carbon electrodes in order to enhance the performance of the electrodes for their use in high performance
supercapacitors. Activated carbon monoliths (ACMs) electrodes have been prepared by carbonization and activation
of green monolitths (GMs) of pre-carbonized fibers of oil palm empty fruit bunches or self-adhesive carbon grains
(SACGs) and SACGs added with 6 wt. % of KOH-treated multi-layer graphene. ACMs electrodes have been
assembled in symmetrical supercapacior cells that employed aqueous sulphuric acid electyrolyte. The cells have
been tested with electrochemical impedance spectroscopy and cyclic voltammetry methods to investigate the effect
of graphene addition on the specific capacitance (C sp), equivalent sereis resistance (ESR) and response time (τo). The
results show that the addition of graphene in the GMs change the values of Csp, ESR and τ o from (61-96) F g-1, 3.4
Ω cm2 and 38 s, to the respective values of (110-123) F g-1, 2.6 Ω cm2 and 63 s. This study demonstrates that the
graphene addition in the GMs has a significant effect on the electrochemical behavior of the electrodes.
Keywords: Graphene; Self-adhesive carbon grains; Activated carbon electrode; Electrochemical property;
Supercapacitor
114
Paper CS-76
Study of Pores Formation Mechanism of Calcium Oxide
Prepared by Spray-Pyrolysis Method with Polystyrene
Latex as Template
Ricky Septianto1, a), Ferry Iskandar1, b), Bebeh Nuryadin2, Lee Hwa3
1
Institut Teknologi Bandung
Universitas Islam Negeri Sunan Gunung Djati
3
Korea Institute of Industrial Technology (KITECH)
2
a)
Corresponding author: [email protected]
b)
[email protected]
Abstract. The mechanism of pores formation of calcium oxide as the result of calcium nitrate decomposition and
also addition of polystyrene latex (PSL) which has negative zeta potential, was investigated. Calcium nitrate was
decomposed by using spray-pyrolysis method at the reactor temperature 825 °C, nitrogen flow rate of 2 L/min, and
PSL concentration of 0%, 25%, 50% and 75%. The morphology of obtained CaO was captured by SEM. According
to SEM result, CaO which is produced by precursor consists of calcium nitrate without addition of PSL, shows the
presence of pores as the result of gas releasing during the pyrolysis reaction. Whereas, the addition of PSL with
concentration of 25% and 50% affect the size of pores where its size is larger than the pores without addition of PSL.
In the other hand, the addition of 75% PSL only produced pores on the surface of CaO. The mechanism of pores
formation are qualitatively explained by principles theory.
Keywords: CaO; polystyrene latex; pores; spray-pyrolysis
115
Paper CS-77
MIL-53(Fe) – reduced Graphene Oxide Hybrids as
Potential Photocatalytic Energy Materials
Varghese Swamya), Siang Piao Chaib) and Vincent Kee Yuen Wongc)
Monash University
a)
Corresponding author: [email protected]
b)
[email protected]
c)
[email protected]
Abstract. Metal-organic frameworks (MOFs) are designed porous 2D or 3D crystalline structures obtained by
linking organic ligands to metal ions or metal clusters. MOFs are finding applications in various fields such as
catalysis, filtration, gas absorption, and drug delivery. MIL-53(Fe), an Fe based MOF, has attracted attention for
potential photocatalytic energy production. In this study, MIL-53(Fe) was first synthesized using a solvothermal
method. The tunability of its optical and electronic properties was explored by attaching different functional groups
to MIL-53(Fe). Finally, a series of hybrid structures involving MIL-53(Fe) and reduced graphene oxide was
produced using a low temperature procedure. The materials were characterized using powder x-ray diffraction,
Fourier transform infrared spectroscopy, electron microscopy and microanalysis as well as UV-Visible and
photoluminescence spectroscopies. Slight reduction in the band gap energy was achieved due to functionalization of
MIL-53(Fe). The photoactivity of the functionalized MIL-53(Fe) – reduced graphene oxide hybrid material shows
enhancements. Methylene blue dye testing using the hybrid materials suggested higher photodegradation compared
to pure MIL-53(Fe) or its functionalized equivalents. This may be related to the suppression of electron-hole
recombination by the reduced graphene oxide in the hybrid material.
Keywords: metal organic framework; photoactivity; graphene oxide; mil53(Fe)
116
Paper CS-78
Biosorption of Cu(II) Ions by Cellulose of Cabbage
(Brassica oleracea var. capitata L.) as Biosorbent from
Agricultural Waste
Wirenia), Eddy Heraldyb), and Witri Wahyu Lestaric)
Department of Chemistry, Faculty of Mathematic and Natural Science, Sebelas Maret University Jl. Ir. Sutami
no. 36A, Kentingan, Jebres, Surakarta
a)
Corresponding author: [email protected]
b)
[email protected]
c)
[email protected]
Abstract. Biosorption on lignocellulosic wastes has been identified as an appropriate alternative technology to
remove heavy metal ions from wastewater. The purpose of this research was to study the ability of cabbage
biosorbent prepared from agricultural waste on biosorption of Cu(II). Cabbage biosorbent was activated with sodium
hydroxide at concentrations of 0.01; 0.1; 1 and 2 M. The biosorption optimum conditions were studied with initial
pH (2-10), biosorbent dosage (0.2-1) g/L, contact time (15-90) minutes, and metal ion concentrations (20- 100) mg/L
by batch method. Experimental data were analyzed in terms of two kinetic models such as pseudo-firstorder and
pseudo-second-order models. Langmuir and Freundlich isotherm models were applied to describe the biosorption
process. The results showed that cabbage biosorbent activated by 0.1 M sodium hydroxide greatly enhanced the
efficiency of biosorption Cu(II) from 69.69% to 99.90%. The FTIR spectra have shown a typical absorption of
cellulose and typical absorption of lignin decrease after activation process. The kinetic biosorption was determined
to be appropriate to the pseudo-second-order model, and the biosorption equilibrium was described well by the
Langmuir isotherm model with maximum biosorption capacity of 38.46 mg/g for Cu(II) at pH 5, biosorption proses
was spontaneous in nature with biosorption energy 24.79 kJ/mol at 302 K.
Keywords: Biosorption; Cabbage waste; Cellulose; Cu(II) Ions
117
Paper CS-79
Biosorption of Lead (II) Ions by NaOH-activated
Apple(Malus domestica) Juice Residue
Devita Dwi Arimurtia), Eddy Heraldyb), and Witri Wahyu Lestaric)
Chemistry Department, Faculty of Mathematic and Natural Science, Sebelas Maret University
Ir. Sutami street no. 36A, Kentingan, Jebres, Surakarta
a)
Corresponding author: [email protected]
b
)[email protected]
c)
[email protected]
Abstract. This research study about removal Pb(II) ions from aqueous solutions using NaOH-activated apple (Malus
domestica) juice residue. Biosorbent was characterized with Fourier Transform Infrared Spectrophotometer (FTIR),
and Surface Area Analyzer (SAA). The effects of biosorbent dosage, pH, contact time and initial metal ion
concentration had been investigated in batch-adsorption method. The biosorption kinetic data were analyzed by
pseudo-first-order and pseudo-second-order kinetics model. Freundlich and Langmuir’s isotherm were used to
describe the biosorption process. The optimum conditions of Pb(II) adsorption was observed at 60 min of contact
time, pH 4, and 0.1 g biosorbent dosage in 25 ml solution. The biosorption kinetics followed the pseudo-secondorder
kinetic model, obtaining the following biosorption constant rate 0.184 g.mg −1.min−1. The Langmuir isotherm model
exhibited the best fit to experimental data. The maximum biosorption capacity of Pb(II) determined according to the
Langmuir model was 90.90 mg.g-1 at 302 K, with the adsorption energy of 26.428 kJ.mol-1.
Keywords: apple juice residue; biosorption; lead (II) ions; water treatment
118
Paper CS-80
Synthesis of Nano-forsterite Powder Based on Natural
Silica Sand
Upik Nurbaiti1, a), Fikriyatul Azizah Suud2, Triwikantoro3, Mochamad Zainuri4,
and Suminar Pratapa5, b)
1
Department of Physics, Faculty of Mathematics and Natural Sciences Institut Teknologi Sepuluh Nopember, Jl.
Arief Rahman Hakim, Surabaya 60111, Indonesia
2
Department of Physics, Faculty of Mathematics and Natural Sciences, Semarang State University, Jl. Raya
Sekaran GunungPati, Semarang 50221, Indonesia
a)
Corresponding author: [email protected]
b)
[email protected]
Abstract. Nano-forsterite powder with natural silica sand and magnesium powder as the raw materials have been
succesfully synthesized. The silica sand was purified followed by a coprecipitation process to obtain colloidal silica.
The magnesium powder was dissolved in a chloric acid solution to obtain MgCl2 solution. The nanoforsterite
powder was synthesised using a sol-gel method. This method was done by mixing the colloidal silica and the MgCl2
solution with various compositions. Forsterite solution was divided into three groups: without aging (NFTL NA),
with aging (NFTL A) and aging aging and filtering (NFTL SA). The samples were dried at 100 °C using a hot plate.
The dried powders were calcinated at 900 °C for 2 hours. The samples were characetised for their elements and
phase compositions using X-ray Flourescence (XRF) and X-ray Diffraction (XRD) methods, respectively. The
diffraction data were qualitatively analyzed using Match!2 software and quantitatively using Rietica software.
Crystal size was verified using Transmission Electron Microscopy (TEM). Results of XRD data analysis showed that
forsterite formed on the sample NFTL NA up to 77.5% wt, NFTL A up to 93.6% wt and NFTL AS 90.5% wt. Nanoforsterite obtained from samples NFTL SA with an average size of 53(6) nm.
Keywords: Nano-forsterit; natural silica sand; MgCl2; aging; sol-gel
119
Paper CS-81
XPS Study of Transient Graphene Quantum Dots
Synthesized by Hydrothermal Route to The
Photoluminescence Effect
Fitri Aulia Permatasari1, Akfiny Hasdi Aimon1, Ferry Iskandar1, a), Takashi
Ogi2, and Kikuo Okuyama2
1
Bandung Institute of Technology
2
Hiroshima University
a)
Corresponding author: [email protected]
Abstract. A transient Graphene Quantum Dots (GQD) was succesfully synthesized by hydrothermal route by
reacting Citric acid and Urea as precursors. The samples that obtain at 50, 90 and 180 minutes hydrothermal time
was investigated by X-ray Photoemission Spectroscopy (XPS). The XPS full scan of the samples show that the
sampels consists of C, N and O atoms without any contaminant. Based on the qualitative analysis from C1s spectra,
the spectra were divided into three areas e.g., C-C,C=C bonding, C-N configuration, and Oxygen functional group at
~284, ~286, ~288 eV, respectively. Regarding to the photoluminescence (PL) of GQD, the C-N configuration give a
contribution to the PL intensity of GQD. We suggest that the C-N configuration play an important role to the PL
intenisty on GQD.
Keywords: C-N configuration; GQD; Photoluminescence; XPS
120
Paper CS-82
Impact of Driving Force Point Position on The
Performance of the Novel iARG-X2 Sound Driven Energy
Harvesting Helmholtz Resonator
I Yahya1, a), Harjana1, Ubaidillah2
1
The Iwany Acoustics Research Group (iARG), Physics Dept. Faculty of Sciences and Mathematics Sebelas
Maret University, Indonesia
2
Mechanical Engineering Dept. Faculty of Engineering Sebelas Maret University, Indonesia.
a)
Corresponding author: [email protected]
Abstract. The energy conversion performance of novel iARG-X2 sound driven energy harvesting Helmholtz
resonator presented in this paper. A Helmholtz resonator with multiple necks and cavities was developed in order to
convert sound waves energy using piezoelectric beam installed inside the resonator. Mean flow and or focused sound
waves are pointed on some certain position to drive the piezoelectric beam and convert noise and mean flow energy
into electricity. Experimentally test procedures based on ASTM E-1050 was conducted with and without mean flow
to investigate both resonator sound absorption and energy conversion performance. In term of energy conversion
ability, it found that the driving force point position take into account significantly compared to the resonator
resonance effect. In the other hand the sound absorption are purely acoustically dependent to resonator structure in
which the length of necks and cavity volume. This finding suggest new point of view on the way of development
Helmholtz resonator based sound driven energy harvesting system which is its performance are not purely related to
resonator resonant frequency as reported by many previous researchers.
121
Paper CS-83
Sound Absorption Range Extension of Cavity Backed
Perforated Panel Using Multi Local Resonant Acoustic
Metamaterial Inclusion
I Yahya1, a), Harjana1), Ubaidillah1, 2, R Kristiani1, J I Kusuma1
1
The Iwany Acoustics Research Group (iARG), Physics Dept. Faculty of Mathematics and Natural Sciences
(MIPA) Sebelas Maret University, Indonesia
2
Mechanical Engineering Dept. Faculty of Engineering Sebelas Maret University, Indonesia.
a)
Corresponding author: [email protected]
Abstract. The sound absorption enhancement and extension effect of cavity backed perforated panel with an
inclusion of multi local resonant metamaterial is proposed. The cavity backed perforated panel test model has a
flexible perforated membrane fitted into its cavity to increase the sound absorption in the mid and high frequency
range. Multi local resonant metamaterial inclusion which is consist of tubular shaped micro resonators was placed
into two different position inside the cavity. Laboratory test procedures using transfer function based impedance tube
method after ASTM E-1050 was conducted to investigate the influence of inclusion position. The result shows that
placing of inclusion behind the flexible perforated membrane increase sound absorption coefficient at lower
frequency range. Moreover, local resonant effect occurs by adjusting the configuration and dimensions of inclusion.
Furthermore, the flexibility on adjusting local resonant brings possibility for controlling the low frequency noise
with a shallow depth sound absorber to fulfill industrial needs.
122
Paper CS-84
Detection of CdSe Quantum Dot Photoluminescence for
Security Label on Paper
Isnaeni1, a), Ratu Bilqis2, and Jatmiko Endro Suseno2
1
Research Center for Physics, Indonesian Institute of Science, Building 442 Puspiptek Serpong, South
Tangerang, Banten, Indonesia 15314
2
Department of Physics, Diponegoro University, Jl. Prof. Soedarto, Tembalang, Semarang, Indonesia 50275
a)
Corresponding author: [email protected]
Abstract. CdSe quantum dot has great potential in various applications especially for emitting devices. Another
potential application of CdSe quantum dot is security label for anti-counterfeiting. In this work, we present a
practical approach of security label on paper using one and two colors CdSe quantum dot. Colloidal CdSe quantum
dot is used as stamping ink on various types of paper. Under ambient condition, quantum dot is almost invisible. The
quantum dot security label can be revealed by detecting emission of quantum dot using photoluminescence and cnc
machine. The recorded quantum dot emission intensity is then analyzed using home-made program to reveal
quantum dot pattern stamp having the word ’RAHASIA’. We found that security label using quantum dot works
well on several types of paper. The quantum dot pattern can survive several days and further treatment is required to
protect the quantum dot. Laminated paper having quantum dot security label gives good emission pattern of quantum
dot. However, oxidation of quantum dot occurring during this experiment reduces the emission intensity of patterned
quantum dot. Further experiment is required to protect the quantum dot.
123
Paper CS-85
Effect of Pre-corroded on Fatigue Behaviour Dissimilar
Metal Weld Steel AISI 304 and Carbon Steel SS 400 in
NaCL 3.5% Solution
B. R. Hilca1, a) and Triyono2, b)
1
Mechanical Engineering Department, Sebelas Maret University, Surakarta 57126, Indonesia
Mechanical Engineering Department, Sebelas Maret University, Surakarta 57126, Indonesia
2
a)
Corresponding author: [email protected]
b)
[email protected]
Abstract. Though specimens dissimilar weld AISI 304 stainless steel and carbon steel SS 400 with various filler metal
variation ER 308 and ER 309, the effect of pre-corroded on fatigue initiation in NaCl 3,5% solution have been studied.
The process of pre-Corroded specimens were have been immersion in 3.5% NaCl solution for time exposure 5 days.
Characterization Tests has been tested by the Fatigue crack propagation testing, tensile test, Corrosion rates was analysed
using methods by potentiodynamic polarization, fracture surface characterization was has been analysed using the SEM,
while the changing of chemical composition with EDS. Fatigue experiment specimens were give notch Midle tension
(MT) with strees ratio of 0.25 and frequency of 11 Hz. fatigue crack propagation of specimens ER 308 were have been
obtained was around 343,910 and for ER 309L was have been obtained 3383,231. Fatigue result showed a significat
decrease in the number cycles of fatigue pre-corroded for specimens ER 308 at 241,145 cycles and the results for filler
ER309L was around 254,909 Cycle. SEM fracture surface characterization with two specimens found some initial
cracking and pitting corrosion on the area is the initial crack. After potentiodynamic, the surface of the specimen surface
characterization with SEM results was found severe pits on of the both specimen filler with the size pits corrosion
arround 50 µm.
Keyword: dissimilar metal weld; ER 308 and ER 309L; corroded; Multiple inisial crack; pit corrosion
124
Paper CS-86
Molecular Dynamic Simulation of Graphene Growth at
Initial Stage on Ni(100) Facet for Low Flux C Energy by
Chemical Vapor Deposition
Ibnu Syuhada, Ahmad Rosikhina), Aulia Fikri, Fatimah A. Noor, Toto Winata
Physics of Electronic Materials Research Division, Department of Physics, Faculty of Mathematics and Natural
Science, Institut Teknologi Bandung. Jl. Ganesha no.10, Bandung 40123, Indonesia
a)
corresponding author: [email protected]
Abstract. In this study, atomic simulation of single layer graphene growth on Ni (100) at initial stage via chemical
vapor deposition method has been developed. The C-C atoms interaction was performed by Terasoff potential mean
while Ni-Ni interaction was specified by EAM (Embedded Atom Modified). On the other hand, the Morse potential
was also involved to describe bond order interaction during deposition process. From this simulation, it shows that
the formation of graphene is not occurs through a combined deposition mechanism on a Ni substrate but via C
segregation. It means, Ni-C amorphous is source for graphene growth when cooling down of Ni substrate. This result
is appropriate with experiments and quantum mechanics simulation.
Keywords: Molecular dynamics; graphene, nickel; Chemical Vapor Deposition (CVD); initial growth stage
125
Paper CS-87
Effects of Temperature on Cu Structure Deposited on Si
Substrate: A Molecular Dynamics Study
Aulia Fikri Hidayata), Ahmad Rosikhin, Ibnu Syuhada and Toto Winatab)
a)
Bandung Institute of Technology
Corresponding author: [email protected]
b)
[email protected]
Abstract. The deposition process of copper onto silicon substrate was studied by the molecular dynamics method.
Tersoff, MEAM, and Morse potentials were used to describe the interaction of Si-Si Cu-Cu, and Cu-Si, respectively.
Deposition process was performed using NVE ensemble and applying Berendsen thermostat with 0,2 fs timestep for
100 ps. The effect of substrate temperature on the percentage of amorphous structure, radial distribution function
(RDF), and coordination number was investigated. The result was indicated that at 300 K, the percentage of
amorphous structure was relatively lower compared to another temperature. First peaks of RDF at each temperature
were found at radius 3,05 Å and were still relatively wide, indicating short-range order structure.
Keywords: Molecular Dynamics; Copper; Silicon; Amorphous; RDF; Coordination Numbe
126
Paper CS-88
Synthesis of Nano-sized ZnO Particles by Co-precipitation
Method with Variation of Aging Time
Sri Yani Purwaningsiha), Triwikantoro, Suminar Pratapa, and Darmintob)
Department of Physics, Faculty of Mathematics and natural Sciences, Institut Teknologi Sepuluh Nopember
Kampus ITS Sukolilo, Surabaya 60111. Tel.: +62-315943351; fax: +62-315943351
a)
Corresponding author: [email protected]
b)
[email protected]
Abstract. Zinc oxide (ZnO) powders have been synthesized by a co-precipitation method at low temperature (85
°C), using zinc acetate dihydrate, ammonia, hydrochloric acid solutions as the reactants. A number of process
parameters such as reaction temperature, solution basicity or pH, and aging time are the main factors affecting the
morphology and physical properties of the ZnO nanostructures. In this work the effect of aging time on the
morphology and particles size were studied. The as-synthesized ZnO powders were characterized using transmission
electron microscopy (TEM) and X-ray diffraction (XRD) techniques. The samples were also analyzed using Fourier
transform infrared (FTIR). Rietveld refinement of XRD data confirms that ZnO crystallizes in the wurtzite structure
with high degree of purity and with the (101) plane predominant. Transmission electron microscopy show that the
formed ZnO nanocrystals are pseudo-spherical shape with diameters of ~11 nm.
Keywords: Zinc oxide; co-precipitation; nanoparticles; aging time
127
Paper CS-89
Electrophoretic Deposition of Sorpted Arsenic onto Fine
Iron Oxide Particles in Tap Water
Syahira Mohd Sharif1, Noor Fitrah Abu Bakar1, a), and Mohd Nazli Naim2
2
1
Faculty of Chemical Engineering, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia
Department of Process and Food Engineering, Faculty of Engineering, Universiti Putra Malaysia, 43400
Serdang, Selangor, Malaysia
a)
Corresponding author: [email protected]
Abstract. Arsenic contamination in tap water has been recognized as a major problem and harmful to human health.
Existence of fine iron oxide particles from corrosion pipes encourages the adsorption of arsenic onto fine iron oxide
particles in tap water. In this study, electrophoretic deposition (EPD) technique has been demonstrated to remove
arsenic with natural adsorbent (fine iron oxide particles) in tap water samples. Characterizations of metal element
particularly arsenic and fine iron oxide particles in tap water from two different locations, i.e. commercial and
residential areas, were identified. Results show that the concentration of arsenic in residential area was higher than
commercial area samples i.e. 0.022 ± 0.014 and 0.016 ± 0.013 ppm, respectively. Zeta potential value from the
residential area was higher than the commercial area, i.e. −42.27 ± 0.12 and −34.83 ± 0.23 mV, respectively. During
the removal of arsenic using the EPD technique, the direct current (DC) voltage was varied from 5 to 25V at a
constant electrode distance of 30 mm. Effect of zeta potential, voltage and electrode type were intensively
investigated. High percentage removal of arsenic was obtained from the carbon plate than the carbon fibre electrode.
The percentage removal of arsenic from all samples slightly decreased with increasing of the applied voltage. EDX
analysis confirmed that arsenic has adsorbed onto deposited iron oxide particles on the anode electrode. Overall,
EPD technique was found to be successful in removing adsorbed arsenic onto fine iron oxide particles in tap water
with 26 % ± 1.73 of removal.
Keywords: Electrophoretic deposition (EPD); Arsenic; Fine Iron Oxide Particle; Voltage
128
Paper CS-91
Electrochemical Performance of LiFePO4 Cylinder Cell
Battery
Wagiyo Honggowiranto1, Sudaryanto1, a) and Agus Purwanto2, b)
Center for Sains and Technology Advanced Materials – BATAN Kawasan Puspiptek Serpong, Tangerang
Selatan15314
2
Sebelas Maret University (UNS), Surakarta, Indonesia
Jl. Ir. Sutami No. 36A, Jawa Tengah 57126
1
a)
Corresponding author: [email protected]
b)
[email protected]
Abstract. A study on the electrochemical performance of LiFePO4 based cylinder cell battery has been done. The
measurements have been carried out using cyclic voltametry (CV), charge-discharge (CD), and electrochemical
impedance spectroscopy (EIS). The CV profiles show that the battery having anodic (charge) peak and chatodic
(discharge) peak at 4.2 and 2.5V, respectively, at scan rate of 0.1 mV/sec. The CD result show that the battery
capacity, that was 700 mAH, exhibited excellent capacity retention with efficiency was about 100%. From EIS
measurement, it was also observed that the battery resistance decreased with the state of charge.
Keywords: Lithium Iron Phasphate; Lithium Ion Battery; Cylinder Cell; Electrochemical performance
129
Paper CS-92
Surface Area Improvement of SrTiO3 Nanocrystalline by
Polystyrene Assisted Spray Pyrolysis Method
Raymond Tanumiharja1, Retno Maharsi1, Akfiny H. Aimon1,
and Ferry Iskandar1, 2, a)
1
Physics of Electronic Materials Research Division
Department of Physics, Bandung Institute of Technology, Bandung 40132 Indonesia
2
Research Center for Nanosciences and Nanotechnology
Bandung Institute of Technology, Bandung 40132 Indonesia
a)
Corresponding author: [email protected]
Abstract. Hollow spherical nanocrystallines strontium titanate (SrTiO3, STO) were successfully synthesized by
polystyrene assisted spray pyrolysis method. The pyrolysis temperature and polystyrene ratio were varied to get the
high surface area and good crystallinity at constant gas flow rate of 2L/min. Crystalline characterization,
morphology structure, and surface area were characterized by X-Ray Diffraction, Scanning Electron Microscope,
and Brunauer Emmet Teller. XRD characterization shows that pure nanocrystallines STO were achieved at 900 C
temperature. Moreover, the crystalline size of STO without and with polystyrene were 13,1 nm and 16,6 nm,
respectively. SEM images shows that STO synthesized without polystyrene has spherical structure while polystyrene
templated STO has hollow spherical structure. Moreover, the BET results show high surface area of polystyrene
assisted STO. This high surface area may gives an opportunity for STO to be applied in water splitting for hydrogen
production.
Keywords: SrTiO3; polystyrene; spray pyrolysis; water splitting
130
Paper CS-93
Modification and Characterization of Chitosan with New
Cross-Linker (Edge, Degde and Badge)
Sri Juari Santosa1, a), Atmanto Heru Wibowo1, b), Dwi Siswanta1, c), and Abu
Masykur2, d)
1
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada,Sekip
Utara, Yogyakarta 55281, Indonesia
2
Department of Chemistry Education, Faculty of Faculty of Teacher Training and Education, Universitas
Sebelas Maret, Jl. Ir. Sutami 36A Surakarta, 57126, Indonesia
a)
Corresponding author: [email protected]
b)
[email protected]
c)
[email protected]
d)
[email protected]
Abstract. The modification of chitosan using some crosslinking agents has been carried out. The crosslinking agents
used, ethylene glycol diglycidyl ether (EGDE), diethylene glicol diglycidyl ether (DEGDE) and bisphenol A
diglycidyl ether (BADGE) were reacted on the hidroxyl group of chitosan. The crosslinked chitosan were analyzed
using FTIR, 13C NMR, EA, SAA, XRD, TG-DTA and investigated in the term of the solubility. FTIR, 13C NMR
and EA data showed that cross-linking process of chitosan was succesfully done on the hydroxyl group of chitosan.
Cross-linking processes decreased the surface area as the pores of chitosan was covered by the cross-linker. Thermal
data indicated that cross-linking processes increased the thermal stability of chitosan. Three step degradation above
190 oC of chitosan cross-linked were indicated from the TG-DTA data. Chitosan cross-linked was insoluble in some
acid media such as HCl, HNO3 and acetic acid. The chitosan cross-linked prepared showed a good potential for the
application for the adsorben material.
Keywords: Cross-linked chitosan; EGDE; DEGDE; BADGE characterization
131
Paper CS-94
The Influence of Calcination Temperature on The Optical
Properties of Hematite (α-Fe2O3)
Ali Mufida) and Mochammad Zainuri
Department of Physics, Faculty of Math and Natural Science, Sepuluh Nopember Institute of Technology (ITS)
Jl. Arief Rahman Hakim, Surabaya 60111 Indonesia.
a)
Corresponding author: [email protected]
Abstract. The influence of calcination temperature on the optical properties of antiferromagnetic materials has been
researched. Hematite α-Fe2O3 is antiferromagnetic material with a rhombohedral lattice shape which has stable
properties due to the influence of heat. The methods used are co-precipitation, which produces precursors in the form
of FeCl3 and FeCl2. Test results with X-ray fluorescence (XRF) showed that the biggest mineral content is with
percentage of 98.02% Fe3O4 and test results DTA-TGA showed occurrence of depreciation 1.8 mg mass at a
temperature of 280 °C and 2.7 mg at a temperature of 860 °C, while testing by UV-Vis spectrometer was obtained
absorbance of each is 1.573 a.u. at a temperature of 700 °C, 1.308 a.u. at a temperature of 800 °C, 1.225 a.u. at a
temperature of 860 ° C and 0.847 a.u. at a temperature of 900 °C which can be regarded as a semiconductor material
with energy gap 1.862 eV, 1.948 eV, 2.044 eV and 2.243 eV, respectively.
Keywords: Hematite; Co-precipitation; Calcination; Energy Gap; XRF; XRD; DSC-TGA; UV-Vis Spectrometer
132
Paper CS-95
Effluence of SiO2 Barrier on The Characteristics and
Performance Photocatalytic of Fe3O4/TiO2
Siti Wardiyatia) and Wisnu Ariadib)
Center for science and technology advance materials-BATAN
Kawasan PUSPIPTEK Serpong Tangerang Selatan, 15314
a)
Corresponding author: [email protected]
b)
[email protected]
Abstract. The barrier addition of SiO2 on nanocatalyst magnetic of Fe3O4 / TiO2 with a solution of tetraethyl
orthosilicate (TEOS) was been carried out. the aim of experiment is to study of barrier SiO2 influence on the
characteristics and performance of photocatalytic Fe3O4/TiO2. The synthesis of Fe3O4/SiO2/TiO2 through three
step; the first step is formation of superparamagnetic Fe3O4 by precipitation method using Fe+2 and Fe+3 as
precursors and mixture of NaOH + NH4OH solution as precipitation agent . The next step SiO2 coat Fe3O4 by using
TEOS (tetraethyl orthosilicate) solution to form Fe3O4 / SiO2, and the last step is to coat Fe3O4/SiO2 by TiO2
using TBOT (tri buthyl ortho titanate) to form Fe3O4/SiO2/ TiO2. The Fe3O4/TiO2 and Fe3O4/SiO2/TiO2
synthesized were Characterized by x-ray tool difractometry (XRD), transmission electron microscope (TEM),
scanning microscope vibration (VSM), energy dispersive spectroscopy (EDS), surface area analyzer (SAA), and uvvisible diffuse reflectance spectroscopic. Test performance of photocatalytic of Fe3O4/TiO2and Fe3O4/SiO2/TiO2
to applied degradation process of methylene blue. The results showed that the addition of SiO2 on Fe3O4/TiO2 does
not affect the phase or size of particle, but decrease value of the energy band gap , so increasing the effectiveness of
photocatalytic.
Keywords: Fe3O4; TiO2; SiO2; photocatalytic; methylene blue
133
Paper CS-96
Preparation and Characterization of Semi-Refined Kappa
Carrageenan-Based Edible Film for Nano Coating
Application on Minimally Processed Food
Godras Jati Manuharaa), Danar Praseptianggab), Dimas Rahadian Aji
Muhammadc), and Bawani Hindami Maimunid)
Department of Food Science and Technology, Sebelas Maret University, Surakarta, Indonesia.
a)
Corresponding author: [email protected]
b)
[email protected]
c)
[email protected]
d)
[email protected]
Abstract. Shorter and easier processing of semi-refined kappa carrageenan extracted from from Euchema cottonii
red seaweed result in cheaper price of the polysaccharide. Edible film was prepared from the semi-refined
carrageenan without any salt addition in this study. The effect of the carrageenan concentration (1.0, 1.5, and 2.0%
w/v) on physical and mechanical properties of the edible film was studied. Edible film thickness and tensile strength
increased but edible film elongation at break and water vapor transmission rate (WVTR) decreased as the
concentration increasing. Based on the characteristic of the edible film, formulation using 2% carrageenan was
recommended. The edible film made demonstrated the characteristic as follow: 0.054 mm thickness, 21.14 MPa
tensile strength, 12.36% elongation at break, and 9.56 g/m2.hour WVTR. It was also noted the carrageenan-based
edible film indicated potential physical and mechanical characteristics for nano coating applications on minimally
processed food.
Keywords: semi-refined kappa carrageenan; edible film; nano coating; minimally processed food
134
Paper CS-97
Various Natural Dye for DSSC Solar Cells
Sahrul Saehanaa) and Darsikin
Departemen of Physics Education, Tadulako University, Palu, Indonesia
Postcal Code: 94118, Telp. (+6281341028650)
a)
Corresponding author: [email protected]
Abstract. This study report the use of various natural dye in dye-sensitized solar cell (DSSC). Performance of solar
cell was characterized by solar simulator. It’s performance also compared with synthetic dye (N719) from solaronix.
We also demonstrated the use of polymer electrolyte from some natural resin.
Keywords: natural dye; DSSC
135
Paper CS-98
Optimization of The Electrical Conductivity Properties
of Nanocomposite Materials of PVA/MWNT Film
Safei Purnamaa) and Setyo Purwanto
Center For Science And Technology Of Advanced Materials, National Nuclear Energy Agency
a)
Coresponding author: [email protected]
Abstract. Optimization of the electrical conductivity properties of nanocomposite materials of PVA/MWNT film.
Nanocomposite materials of PVA/MWNT film been made by mixing the MWNT with variation of SDS in the
concentration of PVA matrix. The method used by Simple Mixing with PVA as a matrix and MWNT as filler. The
present research is to conducted an increasing in the electrical conductivity of PVA/MWNT film with variation
consentrations of SDS. The measurement result, that the largest electrical conductivity were concentrations of SDS
3%, MWNT 0.1%, with the electrical conductivity, G has 3.10 -5 Siemens. The electrical conductivity value of pure
PVA is 4,25.10-9 Siemen.
Keywords: Electrical Conductivity; Nanocomposite; PVA (Polyvinyl Alcohol); MWNT Multiwalled Carbon
Nanotube); SDS (Sodium Dodecyl Sulphate)
136
Paper CS-99
Coins Battery Assembly and Testing With Neutron
Tomography
Yustinus Purwamargapratalaa), Sudaryantob), dan Fahrurrozi Akbarc)
Center for Science and Technology of Advanced Materials-BATAN
PUSPIPTEK, Serpong, Tangerang 15314
a)
Corresponding author: [email protected]
b)
[email protected]
c)
[email protected]
Abstract. Coins Battery Assembly And Testing With Neutron Tomography. Research for the coin battery assembly
has been done. Components used in the form of positive case, the positive electrode of lithium ferro phosphate
coated aluminum, polyaniline separator, LiPF6 liquid electrolyte, lithium negative electrode plates, spacers, spring,
and the negative case. Component positioning accuracy is needed in the assembly to avoid short circuit.
Tomographic method that utilizes neutron beams can be used in testing the quality of the assembly, either on the
outside or the inside of the coin battery.
Keywords: assembly; coin batteries; neutron tomography
137
Paper CS-100
Characterization of LiFePO4 Cathode by Addition of
Graphene for Lithium Ion Batteries
Wagiyo Honggowirantoa) and Evvy Kartinib)
Center for Sains and Technology Advanced Materials – BATAN Kawasan Puspiptek Serpong, Tangerang
Selatan15314
a)
Corresponding author: [email protected]
b)
[email protected]
Abstract. It is well known that the LiFePO4 has been used as cathode material for lithium ion battery. Besides, good
cyclic ability and high capacity, but the LiFePO4 showed very low electronic conductivity. Due to this reason, the
improvement of cathode material LiFePO4 has been performed by addition of graphene. Two cathodes LiFePO4
(LFP) were prepared first by mixing the active material with 10 wt % polyvinylidene fluoride and the addition of 5
wt % graphene in an n-methyl pyrrolidine solvent, and second by addition of 5% graphite. The properties of new
cathodes LFP+Graphene and LFP+Graphite were characterized by measuring the microstructure, electronic
conductivity and electrochemical impedance spectroscopy (EIS). The results showed that the electronic conductivity
increased one order from 1.97E-7S/cm for LFP+Graphite to 1.92E-6S/cm for LFP+Graphene. The electrochemical
performance of half cell lithium ion battery with LFP+Graphite and LFP+Graphene wre conducted by BTS-8
Battery analyser. The charge-discharge cycles showed the capacity of LFP+Graphite and LFP+Graphene were
101,9mAh/g and 114.29mAh/g, respectively. The cyclic performance of LFP +graphene after 10th cyles showed the
capacity decreased of about 0.68% from 114.29mAh/g to113.091mAh/g, while LFP +graphite decreased of about
2.84% from 101.9mAh/g to 97.43mAh/g, at 0.1C-rates. These results showed that the addition of graphene has
improved performance of LFP cathode and its lithium ion battery, in comparison with the addition of only graphite
material.
Keywords: Lithium iron phosphate; graphene; graphite; lithium ion battery
138
Paper CS-101
Impedance Characteristics of Nano Particle
LiCoO2+PVDF
Elman Panjaitana), Evvy Kartinib), Wagiyo Honggowirantoc)
Center for Science and Technology of Advanced Materials – National Nuclear Energy Agency of Indonesia
Kawasan PUSPIPTEK, Gd. 71, Serpong, Tangerang Selatan, Banten 15314, Indonesia
a)
Corresponding author: [email protected]
b)
[email protected]
c)
[email protected]
Abstract. The impendance of np-LiCoO2+xPVDF, as a cathode material candidate for lithium-ion battery (LIB), has
been characterized using impedance spectroscopy for x = 0, 5, 10, 15 and 20 volume percentage (%v/v) and for
frequencies in the 42 Hz to 5 MHz range. Both real and imaginary components of the impedance were found to be
frequency dependent, and both tend to increase for increasing PVDF (polyvinyilidene fluoride) concentration, except
that for 10% PVDF both real and imaginary components of impedance are smaller than for 5%. The mechanism for
relaxation time for each addition of PVDF was analyzed using Cole-Cole plots. The analysis showed that the
relaxation times of the nanostructured LiCoO2 with PVDF additive is relatively constant. Further, PVDF addition
increases the bulk resistance and decreases the bulk capacitance of the nanostructured LiCoO 2.
Keywords: np-LiCoO2+xPVDF; Impedance; Capacitance; Relaxation time
139
Paper CS-102
Synthesize and Characterization of Li3PO4 Solid
Electrolyte for Lithium Ion Batteries
Evvy Kartini1, b), Wagiyo Honggowiranto1, a), Supardi1, c), M. Manawan2, d)
Center for Science and Technology of Advanced Materials – National Nuclear Energy Agency
Kawasan Puspiptek Serpong, Tangerang Selatan15314, Banten, Indonesia
2
Materials Science, Faculty of Mathematic and Natural Science, University of Indonesia, Indonesia
1
a)
Corresponding author: [email protected],
b)
[email protected],
c)
[email protected]
d)
[email protected]
Abstract. Safety is the main problem on developing the lithium ion battery. The combustion is mainly due to the
leakage or shortcut of the electrodes, caused by the liquid electrolyte and polymer separator. For this reason, the
research on solid electrolyte for replacing the existing liquid electrolyte is very important. Li 3PO4 has been proved to
be a good candidate for solid electrolyte, due to its easy in preparation, low cost, high melting temperature and good
compatibility with the electrode materials. So far, Li3PO4 has been applied as solid electrolyte in thin film battery. In
the present work, Li3PO4 has been prepared by wet chemical reaction, a simple method with the advantage of
recycling a waste product H3PO4. Two precursor materials H3PO4 have been used to produce the Li3PO4. One is
from the commercial product and another one from the technical grade obtained from the local resources. The crystal
structure has been characterized by the x-ray diffraction and the results showed that the quality of both sample are
similar. The x-ray diffraction results showed the crystal structure of orthorhombic phase P m n 21 (31), that belongs
to the β-Li3PO4, with the lattice parameters are a = 6.116819, b = 5.249803, c = 4.872359. The conductivity of βLi3PO4 was around 10-8 S/cm. It is concluded that the used of local resources on producing the solid electrolyte
Li3PO4 for lithium ion battery will give more added values to the researches and national industry.
Keywords: Lithium iron phosphate; grapheme; graphite; lithium ion battery
140
Paper CS-103
Morphology Identification and Conductivity Study of
Solid Electrolyte Li3PO4 prepared by Wet Chemical
Reaction and Solid State Reaction
Lugas Dwi Prayogi1, a), Muhamad Faisal, Evvy Kartini2, b) ,Wagiyo
Honggowiranto
1
Engineering Physics, Sepuluh Nopember Institute of Technology
ITS Campus, Sukolilo, Surabaya 6011, Indonesia
2
Center for Science and Technology of Advanced Materials, National Nuclear Energy Agency
Kawasan Puspiptek Serpong, Tangerang Selatan15314, Banten, Indonesia
a)
Corresponding author: [email protected]
b)
[email protected]
c)
[email protected]
Abstract. The comparison between two different methods of synthesize of solid electrolyte Li 3PO4 as precursor
material for developing lithium ion battery, has been performed. The first method is to synthesize Li3PO4 prepared
by wet chemical reaction from LiOH and H3PO4 which provide facile, abundant available resource, low cost, and
low toxicity. The second method is solid state reaction prepared by Li 2CO3 and NH4H2PO4. In addition, the possible
morphology identification of comparison between two different methods will also be discussed. The composition,
morphology, and additional identification phase and another compound of Li 3PO4 powder products from two
different reaction are characterized by SEM, EDS, and EIS. The Li3PO4 powder produced from wet reaction and
solid state reaction have an average diameter of 0.834 – 7.81 µm and 2.15 – 17.3 µm, respectively. The density of
Li3PO4 prepared by wet chemical reaction is 2.238 gr/cm3, little bit lower than the sample prepared by solid state
reaction which density is 2.3560 gr/cm3. The EIS measurement result shows that the conductivity of Li 3PO4 is 1.7 x
10-9 S.cm-1 for wet chemical reaction and 1.8 x 10-10 S.cm-1 for solid state reaction. The conductivity of Li3PO4 is not
quite different between those two samples even though they were prepared by different method of synthesize.
Keywords: Solid electrolyte; Li3PO4; solid state reaction; wet chemical reaction
141
Paper CS-105
Green Synthesis of Chalcones Derivatives as Intermediate
of Flavones and Their Antibacterial Activities
Elfi Susanti VH1, a), Sabirin Matsjeh2, b) , Mustofa3, c), Tutik Dwi Wahyuningsih2,
d)
and Tri Redjeki1, e)
1Sebelas Maret University, Ir Sutami 36A Surakarta Indonesia, 57126
Department of Chemistry, Faculty of Mathematic and Natural Science Gadjah Mada University,
Jl Sekip Utara, Yogyakarta Indonesia 55281
3Faculty of Medicine, Gadjah Mada University, Yogyakarta
Jl. Sekip Utara Yogyakarta Indonesia, 55281
2
a)
Corresponding author: [email protected]
b)sabirin_mara @yahoo.com
c)[email protected]
d)
[email protected]
e)
[email protected]
Abstract. Four chalcones derivatives have been synthesized from 3,4-dimethoxybenzaldehyde and acetophenone
derivatives (2-hydroxy acetophenone, 2,4-dihydroxy acetophenone, 2,5-dihydroxy acetophenone and 2,6-dihydroxy
acetophenone). The synthesis of these chalcones were conducted by Claisen-Schmidt condensation using grinding
techniques at room temperature in the absence of solvents. The chalcones were prepared by grinding together
equivalent amount of the approriate hydroxyacetophenone and 3,4-dimethoxybenzaldehyde in the presence of solid
sodium hydroxide. Grinding techniques for synthesis of the chalcones derivatives is simple, efficient and
environmentally benign compared to conventional methods. Then, the four chalcones derivatives undergo
cyclization reactions to produce four flavones after reacted with iodine. The synthesized compounds were
characterized by spectrosmetry (IR, 1H-NMR, 13C-NMR and MS).
Keywords: acetophenone; chalcone; flavone; Claisen-Schmidt condensation; grinding
142
Paper CS-112
Preparation and Characterization of Double Layer Thin
Films ZnO/ZnO:Ag for Methylene Blue Photodegradation
Heri Sutanto1, a), Singgih Wibowo1, b), and Hadiyanto2, c)
2
1
Department of Physics, Faculty of Science and Mathematics, Diponegoro University.
Department of Chemical Engineering, Faculty of Engineering, Diponegoro University.
a)
Corresponding author: [email protected]
b)
herisutanto@ undip.ac.id
c)
hadiyanto@ [email protected]
Abstract. Double layer (DL) thin films of zinc oxide and silver-doped zinc oxide (ZnO/ZnO:Ag) were deposited on
glass substrate by sol-gel spray coating technique. The prepared thin films were subjected to structural,
morphological, optical and photocatalytic studies. XRD studies confirm that all prepared films possess hexagonal
wurtzite structure. SEM images revealed that the films had thread-like morphology. UV-visible transmission spectra
show that the subtitution of Ag in ZnO leads to band gap reduction. The influence of Ag doping on the
photocatalytic activity of ZnO for the degradation of methylene blue dye was studied under solar radiation. The light
absorption over an extended visible region by Ag ion doping in ZnO film contributed equally to improve the
photocatalytic activity.
Keywords: Double layer thin film ZnO/ZnO:Ag; optical properties; sol-gel spray coating; photocatalytic
degradation; Methylene Blue
143
Paper CS-113
Repair Technology of Turbine Blade Based Super Alloys
Suharnoa), Yuyun Estriyanto, Budi Harjantoa
Faculty of Teacher Training and Education of Sebelas Maret University- Surakarta
a)
Corresponding author: [email protected]
Abstract. Research has been done on turbine blades of the Auxiliary Power Unit (APU) aircraft. This study aimed to
describe the characteristics of APU turbine blade materials which include physical properties. Physical and
mechanical properties must be known so that the experts can perform maintenance on the turbine blade repair in case
of damage. The research method uses descriptive quantitative. Turbine blade material is a nickel-based super alloys.
Physical properties are known to test the chemical composition, microstructure, and SEM. The mechanical
properties are known to test the hardness. The results show that the APU turbine blades in aircraft nofn made of
materials including ferrous and nickel-based super alloys with Ni content of 60%. Based on the test results shows
that the micro-structure of micro structure is dominated by the structure of the turbine blade with carbide Ni Cr Mo
dsn The needle-shaped structure which indicates that the material is hard but it is prone to cracking. The average
hardness number is 316 HVN turbine blades. This indicates that the turbine blade material having a high hardness
number. Based on the above results it can be concluded that the APU turbine blades in aircraft have properties
resistant to heat, resistant to shock loads, and resistant to corrosion. Repairs to the damaged turbine blades are
directed to obtain characteristics as its nature.
Keywords: turbine blades; physical and mechanical testing; material characterization; Inconel 750
144
Paper CS-114
Performance of Bidisperse Magnetorheological Fluids
Utilizing Superparamagnetic Maghemite Nanoparticles
S. A. N. Leong1, b), S. A. Mazlan2, a), P. M. Samin1, A. Idris3, and Ubaidillah4
1
Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia
Malaysia-Japan International Institute of Technology,Universiti Teknologi Malaysia, 54100 Jalan Semarak,
Kuala Lumpur, Malaysia
3
Faculty of Chemical Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia
4
Faculty of Engineering, Universitas Sebelas Maret, Jl. Ir. Sutami 36A, Kentingan, Surakarta, 57126
2
a)
Corresponding author: [email protected]
b)
[email protected]
Abstract. Magnetorheological (MR) fluids consisted of micron-size particles generally often faces the instability
problem due to the large density mismatch between the large particulate matter and continuous oil medium.
Recently, researches have been conducted on the advantages of bidisperse fluids that is a mixture of micron and
nano-sized magnetic particles. In this work, laboratory prepared maghemite nanoparticles (γ-Fe2O3) with average
size of 10 nm were incorporate to the MR fluids comprising carbonyl iron (CI) to reduce the sedimentation rate of
the MR fluids. Three different fluids with the same solid concentration of 80.98% have been prepared to contain 5
and 10% substitution of γ-Fe2O3 nanoparticles to the CI particles and the monodisperse CI particles for comparison
purpose. The sedimentation rate was measured by optical tracking of the interface between the carrier liquid and
particle suspension that formed in the fluids over time. The rheological properties of the bidisperse MR fluids were
investigated using the rheometer with a parallel-plate measuring cell under the different applied magnetic fields and
shear rates. The results indicated that the sedimentation rate was reduced considerably. Moreover, by replacing only
5% of CI particles with γ-Fe2O3 nanoparticles, the yield stress was increased. The formation of heterogeneous
aggregates was considered to improving the stability of the fluids and easier building of well-arranged field-induced
structures. Therefore, the MR fluids performances were improved in general.first, second, and third level headings
(first level heading)
145
Paper CS-115
Reducing of Internal Resistance Lithium Ion Battery
Using Glucose addition
Andri Pratama Salim, Noor Hafidlullah, and Agus Purwantoa)
Research Group of Battery & Advanced Material, Department of Chemical Engineering, Sebelas Maret
University, Jl. Ir. Sutami 36 A Kentingan, Surakarta Indonesia 57126
a)
Corresponding author: [email protected]
Abstract. One of the key performances of lithium battery is internal resistance. In this research, the affect of glucose
addition to decreasing the internal resistance of lithium battery was investigated. The ratio of glucose addition to
anode was varied at weight ratio 1%, 3%, and 5%. The battery is using cathode material of lithium ferrite phosphate
(LiFePO4). To prepare a homogeneous of anode and cathode slurry, a vacuum mixer was used. The slurry was
coated on an aluminum foil sheet with the thickness of 200 μm. The performance of lithium battery was examined
using eight channels battery analyzer. The Internal resistance was examined using internal resistance meter of
battery. The result indicated that by addition of glucose reduce the internal resistance of lithium battery. The best
internal resistance value achieved in the mixtures of 3 % wg of glucose, i.e. 64 miliohm.
Keywords: Internal resistance; glucose; lithium ion battery
146
Paper CS-116
Investigation on the Fly Ash Thermal Treatment on The
Performance of Lithium Ferriphosphate (LiFePO4)
Battery
Bella Febiolita, Dewi Khoirunnissak, Agus Purwantoa)
Research Group of Battery & Advanced Material, Department of Chemical Engineering, SebelasMaret
University, Jl. Ir. Sutami 36 A Kentingan, Surakarta Indonesia 57126
a)
Corresponding author: [email protected]
Abstract. Addition of the fly ash can be used to improve the capacity of LiFePO 4 battery. Fly ash was added in
Acethylene Black (AB) as 2% of the total weight of Acetylene Black (AB). The effects of temperature variation and
fly ash characteristics were analyzed. Fly ash was prepared by heating at 50, 100, 150, and 250°C in muffle furnace
for 5 hours and passed in 200 mesh screen prior to mixing it with other compounds. Lithium Ferriphospat (LiFePO 4),
fly ash, Acethylene Black (AB), Polyvinylidene Fluoride (PVDF) as a binder and N-methyl-2-pyrrolidone (NMP) as
a solvent were mixed to be slurry. The slurry were coated, dried and hot pressed to make a cathode film. The
performance of battery lithium was examined by eight channel battery analyzer. The composition of the fly ash was
examined by spectrofotometer floresence xray (XRF) and spectrofotometer FTIR. The excellent performance was
show in the fly ash addition which were treated by heating at temperature of 150°C. The capacity of fly ash added
LiFePO4 battery is 94.373 mAh/g, which is higher to that of without fly ash addition, i.e. 67.998 mAh/g.
Keywords: Fly ash thermal treatment; cathode film; lithium ion battery capacity
147
Paper CS-117
Preparation and Characterization of Nanocomposite
Polymer Electrolytes Poly(vinylidene fluoride)/Nanoclay
Rahmawati S. A., Sulistyaningsih, Putro A. Z. A, Windyanto N. F., and
Endah R. Dyartantia)
Research Group of Battery & Advanced Material, Department of Chemical Engineering, Sebelas Maret
University
a)
Corresponding author: [email protected]
Abstract. Polymer gel electrolytes defined as semi-solid electrolytes as a separator in battery lithium ion. The
separator is medium transfers of ions and prevent the occurrence of a short-circuit in the battery cells. To obtain the
optimal battery performance, needed separator with high porosity and high electrolyte uptake. This can reduce the
resistance in the transfer of ions between the cathode and anode. This paper aims to investigate the impact of solvent
(DMAC, DMF and NMP) and pore forming agent (Nanoclay and poly (vinyl pyrolidone) (PVP)) addition on the
porosity, electrolyte uptake, morphology, phase and degree of crystallinity. The membrane was prepared by the
phase inversion method by adding PVP and Nanoclay using different solvents. The phase inversion method was
prepared by dissolving Nano Clay and PVP in solvent for 1-2 hours, and then add the PVDF with stirring for 4
hours at 60°C. The membranes were characterized by porosity test, electrolyte uptake test, scanning electron
microscope (SEM), and X-ray diffraction (XRD). The results showed that solvent had no significant effect against
the porosity and electrolyte uptake, but affected membrane morphology. Furthermore, the use of Nanoclay and PVP
improving polymer gel electrolyte membrane performance.
Keywords: battery lithium, separator, polymer gel, PVDF
148
Paper CS- 118
Dye-sensitized Solar Cell Based Carbon Nanotube as
Counter Electrode
Adi Prasetioa) and Hendri Widiyandarib)
Department of Physics, Diponegoro University,
Jl. Prof. H. Soedarto SH, Semarang, Central Java 50275, Indonesia
b)
Corresponding author: [email protected]
a)
[email protected]
Abstract. The counter electrode using Carbon nanotube (CNT) has been successfully fabricated by the doctor blade
method and their performances were investigated. We found that increasing mass of the CNT powder in binder
increases electrocatalytic activity which this beneficial to conversion efficiency of the Dye-sensitized solar cell
(DSSC). The Photovoltaic performance of the DSSCs with 0.01, 0.02 and 0.04 gr of the CNT obtained overall
conversion efficiencies of 0.32%, 0.74% and 0.91%, respectively. The result suggest that the CNT counter electrode
has potential as alternative to the Pt counter electrode for DSSC.
Keywords: CNT, counter electrode, DSSC, photovoltaic performance, electrocatalytic
149
Paper CS-119
Estimation Hydrophilic-Lipophilic Balance Number of
Surfactants
Harsa Pawignya1,2,a), Aji Prasetyaningrum1,c), Endah R. Dyartanti,
Tutuk D. Kusworo1), Bambang Pramudono1,b)
1
Chemical Engineering Department Diponegoro University
Chemical Enineering Departement University of Pembangunan Nasional Yogyakarta
3
Chemical Enginering Departement Sebelas Maret University
2
a)
Corresponding author : [email protected]
b)[email protected]
c)
[email protected]
Abstract. HLB number has been widely used in quantifying the behavior of polar moleculs in emulsions, such as
surfactants. The are several methods for determining the HLB number, with ohysical properties of surfactant
(solubility cloud point and interfacial tension), CMC methods and by thermodynamics properties (Free energy
Gibbs). This paper proposes to determined HLB numbers from interfelation methods. The result of study indicated
that the CMC method described by Hair and Moulik espesially for nonionic surfactant. The application of exess
Gibbs free energy and by implication activity coefficient provides the ability to predict the behavior of surfactants in
multi component mixtures of different concentration. Determination of HLB number by solubility and cloud point
parameter is spesific for anionic and nonionic surfactant but this methods not available for cationic surfactants
Keywords : Estimation, HLB number, surfactant
150
Paper CS-120
The Effect of Impeller Type on Silica Sol Formation in
Laboratory Scale Agitated Tank
Tantular Nurtono, Yayang Ade Suprana, Abdul Latif, Siti Machmudah,
Widiyastutia), and Sugeng Winardi
Chemical Engineering Department, Institute of Technology Sepuluh Nopember, Surabaya 60111, Indonesia
a)
Corresponding author: [email protected]
Abstract. The multiphase polymerization reaction of the silica sol formation produced from silicic acid and
potassium hydroxide solutions in laboratory scale agitated tank was studied. The reactor is equipped with four
segmental baffle and top entering impeller. The inside diameter of reactor is 9 cm, the baffle width is 0.9 cm, and the
impeller position is 3 cm from tank bottom. The diameter of standard six blade Rushton and three blades marine
propeller impellers are 5 cm. The silicic acid solution was made from 0.2 volume fraction of water glass (sodium
silicate) solution in which the sodium ion was exchanged by hydrogen ion from cation resin. The reactor initially
filled with 286 ml silicic acid solution was operated in semi batch mode and the temperature was kept constant in 60
oC. The 3 ml/minute of 1 M potassium hydroxide solution was added into stirred tank and the solution was stirred.
The impeller rotational speed was varied from 100 until 700 rpm. This titration was stopped if the solution in stirred
tank had reached the pH of 10-11, that needed 60 minutes approximately. The apart of sol silica product was
centrifuged and dried in an oven for about 1 day and 70 oC to obtain dry silica particle that could be analyzed by X
Ray Diffraction. The particle size distribution and shape of the silica particles in the remaining sol silica product was
analyzed by particle size distribution analyzer and Scanning Electron Microscope. The silica particle obtained in this
research was amorphous particle and the shape was roughly cylinder. The flow field generated by different impeller
gave significant effect on particle size. The smallest average size of length and diameter of particle (1.3 micron and
0.64 micron, respectively) was generated in reactor with marine propeller at 500 rpm. The reactor with Rushton
impeller produced larger particle which the average size of length and diameter of particle was 8.7 micron and 0.98
micron, respectively, at 200 RPM.
151
Paper CS-121
Effect Excess Air as An Oxidizer in The Flame Assisted
Spray Dryer Using Computational Fluid Dynamics
Approach
Eka Lutfi Septiani, W. Widiyastuti a), Tantular Nurtono, Sugeng Winardi
Chemical Engineering Department, Institut Teknologi Sepuluh Nopember (ITS),
Kampus ITS Sukolilo Surabaya 60111 Indonesia
a)
Corresponding author: [email protected]
Abstract. The size distribution of silica particles as a model material from colloidal silica solution precursor in the
flame assisted spray dryer method were studied numerically using Computational Fluid Dynamics (CFD). CFD has
ability to solve the momentum, energy and mass transfer equation well. k-ε model was used to describe the
turbulence model and non-premixed combustion model was used to combustion model. Collision and break-up
model were also considered to predict the final particles size distribution. For validation, LPG with flow rate of 0.5
L/minute LPG and 200% excess air were used as energy sources. At this condition, numerical solution agreed well to
the experimental work resulting in polydisperse size distribution. Therefore, others excess air, 100% and 150% were
also observed using CFD and evaluated their contribution to their particles size distribution. Monodisperse particles
size distribution were obtained when the combustion used 150% excess air.
Keywords: Computational Fluid Dynamics; k-ε turbulent model; non-premixed combustion; particles size
distribution
152
Paper CS-122
CFD Simulation of Hydrodynamic Characteristics on
Pulse Combustor
Annie Mufyda Rahmatika, W.Widiyastutia), Sugeng Winardi
Department of Chemical Engineering, Institut Teknologi Sepuluh Nopember, Kampus ITS Sukolilo, Surabaya
60111 Indonesia
a)
Corresponding author: [email protected]
Abstract. The purpose of this research is to study the simulation of the combustion characteristics and performances
in pulse combustor using different excess air composition and different pulse combustor geometry using CFD
(Computational Fluid Dynamics) software Ansys FLUENT 15.0. The distribution of temperature, pressure, and fluid
velocity using 2D axisymmetric with k- turbulence models. Two kind geometries of pulse combustors were selected
and compared their performance. The first combustor, called geometry A has expanded tilepipe with diameter 10
mm expanded to 20 mm with length 86 mm. The second combustor, called geometry B has cylinder tilepipe which
10 mm in diameter and 200 mm in length. Air and propane were selected as oxidizer and fuel, respectively, at
temperature 27oC and pressure 1 atm with varied excess air of 0%, 23%, 200%, and 500%. The simulation result
shows that the average temperature of outflow gas combustion decreased with increasing the excess air. On the other
hand, the pressure amplitude increased with increasing the excess air. Amplitude of presure for excess air of 0%,
23%, 200% and 500% were 14976.03 Pa; 26100.19 Pa; 41529.02 Pa; and 85019.01 Pa, respectively. The geometry
of pulse combustor affected the performance of gas combustion produced. Geometry A showed that the energy
produced in the combustion cycle amounts to 538,639 to 958,639 J/kg. On the other hand, geometry B showed that
the generated energy was in the range 864,502 to 1,280,814 J/kg. Combustor with geometry B provided more
effective combustion performance rather than B caused by its larger heat transfer area sectional area.
Keywords: Pulse Combustion; Pulse Combustion Geometry; CFD; k- models; Hydrodynamic characteristics
153
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