Suriani, A.B. and Nor, R.M. and Rusop, M. (2010) Vertically aligned carbon nanotubes synthesized from waste cooking palm oil. Journal of the Ceramic Society of Japan, 118 (1382). pp. 963-968. ISSN 1882-0743, DOI https://doi.org/10.2109/jcersj2.118.963.
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Abstract
For the first time, vertically aligned carbon nanotubes (VACNT) were produced using waste cooking palm oil as green starting materials. The synthesis was carried out in a floating-catalyst thermal chemical vapor deposition reactor. Field emission scanning electron microscopy, energy dispersive X-ray, micro-Raman and thermogravimetric analyses, showed that the carbon nanotubes are of excellent quality, comparable to those obtained using conventional carbon sources. Under a typical synthesis condition of 5.33 wt ferrocence as catalyst and a furnace temperature of 750 degrees C, a mixture of single and multi-walled carbon nanotubes of 85 purity, vertically aligned on a silicon substrate, were produced. Field emission from the VACNT indicated reasonable turn-on field at 2.25 V/mu m which corresponded to the current density of 10 mu A/cm(2). The threshold field was observed to be about 3.00 V/mu m at 1 mA/cm(2). The maximum current density of 6 mA/cm(2) measured was obtained for 4 V/mu m. It is concluded that the VACNT from the reuse of waste material are suitable for applications in flat panel displays and flat lamps. (C) 2010 The Ceramic Society of Japan. All rights reserved.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | Carbon nanotubes; Chemical vapor deposition; Waste cooking palm oil; Carbon source; Chemical vapor; Energy dispersive x-ray; Ferrocence; Field emission scanning electron microscopy; Furnace temperatures; Green starting material Maximum current density Micro-Raman Palm oil Silicon substrates Synthesis conditions Thermal chemical vapor deposition Threshold fields Turn-on field Vertically aligned Vertically aligned carbon nanotube Waste materials Catalysts Field emission; Field emission microscopes; Flat panel displays Scanning electron microscopy Thermogravimetric analysis Vegetable oils Multiwalled carbon nanotubes (MWCN) |
| Subjects: | Q Science > QC Physics |
| Divisions: | Faculty of Science > Department of Physics |
| Depositing User: | miss munirah saadom |
| Date Deposited: | 09 Jul 2013 09:01 |
| Last Modified: | 09 Jul 2013 09:01 |
| URI: | http://eprints.um.edu.my/id/eprint/7895 |
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