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Journal of Nanomaterials
Volume 2012, Article ID 451473, 6 pages
http://dx.doi.org/10.1155/2012/451473
Research Article

Raman Spectroscopic Study of Carbon Nanotubes Prepared Using Fe/ZnO-Palm Olein-Chemical Vapour Deposition

1NANO-SciTech Centre, Institute of Science, Universiti Teknologi MARA (UiTM), Selangor, 40450 Shah Alam, Malaysia
2School of Physics and Materials Studies, Faculty of Applied Sciences, Universiti Teknologi MARA (UiTM), Selangor, 40450 Shah Alam, Malaysia
3Department of Physics, Faculty of Science and Mathematics, Universiti Pendidikan Sultan Idris, 35900 Tanjung Malim, Malaysia
4Faculty of Science, Universiti Putra Malaysia (UPM), Selangor, 43400, Serdang, Malaysia
5Department of Chemistry, Faculty of Applied Sciences, Universiti Teknologi MARA (UiTM), Selangor, 40450 Shah Alam, Malaysia
6NANO-Electronic Centre, Faculty of Electrical Engineering, Universiti Teknologi MARA (UiTM), Selangor, 40450 Shah Alam, Malaysia

Received 22 September 2011; Revised 29 October 2011; Accepted 3 November 2011

Academic Editor: Anukorn Phuruangrat

Copyright © 2012 Syazwan Afif Mohd Zobir et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Multiwalled carbon nanotubes (MWCNTs) were synthesized using Fe/ZnO catalyst by a dual-furnace thermal chemical vapor deposition (CVD) method at 800–1000°C using nitrogen gas with a constant flow rate of 150 sccm/min as a gas carrier. Palm olein (PO), ferrocene in the presence of 0.05 M zinc nitrate, and a p-type silicon wafer were used as carbon source, catalyst precursor, and sample target, respectively. D, G, and G bands were observed at 1336–1364, 1559–1680, and 2667–2682 cm-1, respectively. Carbon nanotubes (CNTs) with the highest degree of crystallinity were obtained at around 8000°C, and the smallest diameter of about 2 nm was deposited on the silicon substrate at 1000°C.