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Transmission electron microscopy study of carbon nanostructures grown by MPACVD in CH4/CO2 gas mixture

Brizoual, L. Le and Belmahi, M and Chatei, H and Assouar, M. B. and Bougdira, J (2007) Transmission electron microscopy study of carbon nanostructures grown by MPACVD in CH4/CO2 gas mixture. Diamond and Related Materials, 16 (4-7). 1244 - 1249.

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Official URL: http://www.sciencedirect.com/science/article/B6TWV...

Abstract

In this paper we present some results obtained from transmission electron microscopy, selected area electron diffraction patterns and the electron energy loss spectroscopy of carbon nanostructures (CNSs) obtained by microwave plasma assisted chemical vapour deposition (MPACVD) in the CH4/CO2 gas mixture. The experiments are carried out at a substrate temperature around 900 °C. The Fe catalyst is silicon supported and dispersed into an amorphous silicon oxide (SiO). It is found that the formation of various CNSs occurs when varying the discharge parameters such as multiwalls carbon nanotubes (MWCNTs), carbon nanowalls, and carbon nanotips. Different behaviour of carbon nanotips is obtained. Their morphology and electronic structure are studied, and a growth mechanism depending on atomic oxygen etching of CNSs is discussed.

Item Type:Article
Additional Information:Proceedings of Diamond 2006, the 17th European Conference on Diamond, Diamond-Like Materials, Carbon Nanotubes, Nitrides and Silicon Carbide - Diamond 2006
Uncontrolled Keywords:Nano-tips; Nanotubes; TEM; EELS
Subjects:Analytical Science > Microscopy and probe methods
Material Science > Nanostructured materials
ID Code:3963
Deposited By:SPI
Deposited On:08 Apr 2009 10:29
Last Modified:08 Apr 2009 10:29

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