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CCVD synthesis of carbon nanotubes with W/Co–MgO catalysts

Landois, Perine and Peigney, Alain and Laurent, Christophe and Frin, L. and Datas, Lucien and Flahaut, Emmanuel CCVD synthesis of carbon nanotubes with W/Co–MgO catalysts. (2009) Carbon, vol. 47 (n° 3). pp. 784-789. ISSN 0008-6223

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Official URL: http://dx.doi.org/10.1016/j.carbon.2008.11.018

Abstract

Carbon nanotubes (CNT) were synthesized from a H2–CH4 mixture with W/Co–MgO catalyst by a catalytic chemical vapour deposition (CCVD) method. Different W/Co ratios were investigated. From transmission electron microscopy observations, we observed that both the number of walls and the diameter of CNT increased with the proportion of tungsten. A promoter effect was observed as long as the proportion of tungsten was kept low and CNT with a number of walls ranging from 2 to 5 were obtained. With a higher proportion of tungsten, multi-walled carbon nanotubes (MWNT) up to 10 walls were synthesised, together with additional undesirable carbon nanofibres.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The original version is available at http://www.sciencedirect.com The original PDF of the article can be found at Carbon website : http://www.sciencedirect.com/science/journal/00086223
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
French research institutions > Centre National de la Recherche Scientifique - CNRS
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Deposited By: Celine Cabaup
Deposited On:16 Jun 2009 09:27

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