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All Journal HAYATI Journal of Biosciences POSITRON TELKOMNIKA (Telecommunication Computing Electronics and Control) Jurnal Matematika & Sains Journal of Engineering and Technological Sciences ALHAZEN Jurnal Otomasi Kontrol dan Instrumentasi Indonesian Journal of Electrical Engineering and Computer Science Budapest International Research and Critics Institute-Journal (BIRCI-Journal): Humanities and Social Sciences Progressive Physics Journal
Ferry Iskandar
Departemen Fisika, Fakultas MIPA Institut Teknologi Bandung
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Physics Social Sciences

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Journal : Journal of Engineering and Technological Sciences

 1 
Simple Fabrication of Carbon Nanotubes from Ethanol using an Ultrasonic Spray Pyrolysis Abdullah, Mikrajuddin; Iskandar, Ferry; Okuyama, Kikuo
Journal of Engineering and Technological Sciences Vol 36, No 2 (2004)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (850.475 KB) | DOI: 10.5614/10.5614/itbj.eng.sci.2004.36.2.3

Abstract

Carbon nanotubes of diameter (20–100 nm) are synthesized by pyrolyzing a sprayed solution of Fe(C5H5)2 and C2H5OH in an Ar atmosphere at relatively low temperatures (around 800 oC). The tubular structures consist of highly crystalline nested graphene cylinders (<200 concentric tubes). Tube diameter can be controlled by varying the furnace temperature, carrier gas flow rate and the Fe:C ratio within the precursor solution. This low cost route for the synthesis of carbon nanotubes is advantageous due the low pyrolytic temperature, safety, processable in atmospheric pressure, and scalable.
Effect of Polystyrene Latex Addition on Size and Pore Volume of Porous Calcium Oxide Particles Prepared by Spray-Pyrolysis Method and Its Ability for SO2 Retention Septianto, Ricky Dwi; Iskandar, Ferry; Abdullah, Mikrajuddin; Khairurrijal, Khairurrijal; Hwa, Lee Myong
Journal of Engineering and Technological Sciences Vol 50, No 2 (2018)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3896.008 KB) | DOI: 10.5614/j.eng.technol.sci.2018.50.2.6

Abstract

In this study, the effects of polystyrene (PS) latex addition on the particle morphology and the pore content of calcium oxide (CaO) were investigated. The CaO particles were prepared using an ultrasonic nebulizer-assisted spray-pyrolysis method with variation of the PS/Ca(NO3)2·4H2O mass ratio in the precursor. Good crystallinity of CaO was obtained at 825°C of synthesis temperature under 2 l/min of nitrogen gas flow, which was confirmed by Fourier transform infrared (FTIR) spectroscopy and X-ray diffraction (XRD). According to scanning electron microscope (SEM) characterization, the CaO particles synthesized with 0 and 25 wt% PS addition had an almost spherical shape with an average size of 1.58 and 1.48 µm, respectively. In addition, macropores were formed in the CaO particles prepared with 25 wt% PS addition that had an average pore diameter of 583.26 nm. Meanwhile, the CaO particles prepared with 75 wt% PS addition had a random shape and an average size of 1.41 µm. The mesopore content was investigated by Barret-Joyner-Halenda (BJH) analysis, which showed improvement of the pore size from 3.45 nm to 5.42 nm for 0 and 25 wt% PS addition, respectively, which is proportional to the pore volume, pore surface area, and the capacity of SO2 retention.
Simple Fabrication of Carbon Nanotubes from Ethanol using an Ultrasonic Spray Pyrolysis Mikrajuddin Abdullah; Ferry Iskandar; Kikuo Okuyama
Journal of Engineering and Technological Sciences Vol. 36 No. 2 (2004)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/itbj.eng.sci.2004.36.2.3

Abstract

Carbon nanotubes of diameter (20"“100 nm) are synthesized by pyrolyzing a sprayed solution of Fe(C5H5)2 and C2H5OH in an Ar atmosphere at relatively low temperatures (around 800 oC). The tubular structures consist of highly crystalline nested graphene cylinders (<200 concentric tubes). Tube diameter can be controlled by varying the furnace temperature, carrier gas flow rate and the Fe:C ratio within the precursor solution. This low cost route for the synthesis of carbon nanotubes is advantageous due the low pyrolytic temperature, safety, processable in atmospheric pressure, and scalable.
Effect of Polystyrene Latex Addition on Size and Pore Volume of Porous Calcium Oxide Particles Prepared by Spray-Pyrolysis Method and Its Ability for SO2 Retention Ricky Dwi Septianto; Ferry Iskandar; Mikrajuddin Abdullah; Khairurrijal Khairurrijal; Lee Myong Hwa
Journal of Engineering and Technological Sciences Vol. 50 No. 2 (2018)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2018.50.2.6

Abstract

In this study, the effects of polystyrene (PS) latex addition on the particle morphology and the pore content of calcium oxide (CaO) were investigated. The CaO particles were prepared using an ultrasonic nebulizer-assisted spray-pyrolysis method with variation of the PS/Ca(NO3)2·4H2O mass ratio in the precursor. Good crystallinity of CaO was obtained at 825°C of synthesis temperature under 2 l/min of nitrogen gas flow, which was confirmed by Fourier transform infrared (FTIR) spectroscopy and X-ray diffraction (XRD). According to scanning electron microscope (SEM) characterization, the CaO particles synthesized with 0 and 25 wt% PS addition had an almost spherical shape with an average size of 1.58 and 1.48 µm, respectively. In addition, macropores were formed in the CaO particles prepared with 25 wt% PS addition that had an average pore diameter of 583.26 nm. Meanwhile, the CaO particles prepared with 75 wt% PS addition had a random shape and an average size of 1.41 µm. The mesopore content was investigated by Barret-Joyner-Halenda (BJH) analysis, which showed improvement of the pore size from 3.45 nm to 5.42 nm for 0 and 25 wt% PS addition, respectively, which is proportional to the pore volume, pore surface area, and the capacity of SO2 retention.
Co-Authors Abdillah, Oktaviardi Bityasmawan Abdul Waris Agustiyanti, Dian Fitria Andri Wardiana, Andri Anrokhi, Mohamad Samsul Arif Surachman Bebeh Wahid Nuryadin Debie Anggraini Desriani Desriani Destiarti, Lia Dewi Kartikasari Dian Ayu Hamama Pitra Eri Hiswara ERNAWATI ARIFIN GIRI-RACHMAN Fatimah A. Noor Fatimah Arofiati Noor Fibriani, Azzania Floweri, Octia Freddy Haryanto Hariyatun, Hariyatun HENI RACHMAWATI Hwa, Lee Myong Indah Salsabila Indra Wahyudin Fathonah Khairurrijal Khairurrijal Kikuo Okuyama Kikuo Okuyama Lee Myong Hwa Maharsi, Retno Marissa Angelina Mikrajuddin Abdullah Mikrajuddin Abdullah Mikrajuddin Abdullah Mikrajuddin Abdullah Nina Yunia Hasanah Nunung Nuraeni, Nunung Permatasari, Fitri Aulia Popi Hadi Wisnuwardhani, Popi Hadi Rachmadani, Nisa Amanda RATIH ASMANA NINGRUM Rhandyka Rafli Ricky Dwi Septianto S Saehana Santika, Arum Sinda Septia Mahen, Ea Cahya Septianto, Ricky Dwi Soetomo, Meilisa Keizia Stephanie, Rebecca Taharuddin, Audrey Angelina Putri Yamahoki, Nicholas Yana Rubiyana, Yana