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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/3426

Title: Use of calcination in exposing the entrapped Fe particles from multi-walled carbon nanotubes grown by chemical vapour deposition
Authors: Pillai, SK
Matlhoko, L
Arendse, C
Ray, SS
Moodley, M
Keywords: Calcination
Fe-particles
Multi-walled carbon nanotubes
Chemical vapour deposition
Nano-structured materials
Raman spectroscopy
Applied Physics
Material science
Nanotubes
Issue Date: Mar-2009
Publisher: Springer Verlag
Citation: Pillai, SK, Matlhoko, L, Arendse, C, Ray, SS and Moodley, M. 2009. Use of calcination in exposing the entrapped Fe particles from multi-walled carbon nanotubes grown by chemical vapour deposition. Applied Physics A: Materials Science & Processing, Vol. (2009), pp 1 -31
Abstract: Multi-walled carbon nanotubes (MWCNTs) were synthesized by a chemical vapour deposition method. The effect of calcination at temperatures ranging from 300 to 550°C in exposing the metal nanoparticles within the nanotube bundles was studied. The degree of degradation of the structural integrity of the MWCNTs during the thermal process was studied by Raman spectroscopy, X-ray diffraction analysis, field-emission scanning electron microscopy, and transmission electron microscopy. The thermal behaviour of the as-prepared and calcined samples was investigated by thermogravimetric analysis. Calcination in air, at 400°C for 1 h, was found to be an efficient and simple method to extract metallic impurities from the amorphous carbon shells with minimal damage to the tube walls and lengths. The nanotubes were observed to be damaged at temperatures higher than 450°C
Description: Author Posting. Copyright Springer Verlag, 2009. This is the author's version of the work. It is posted here by permission of Springer Verlag for personal use, not for redistribution
URI: http://hdl.handle.net/10204/3426
ISSN: 0947-8396
Appears in Collections:National Centre for nano-structured materials
Nanotechnology
General science, engineering & technology

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