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In situ CCVD synthesis of carbon nanotubes within a commercial ceramic foam

Cordier, Anne and Flahaut, Emmanuel and Viazzi, Céline and Laurent, Christophe and Peigney, Alain In situ CCVD synthesis of carbon nanotubes within a commercial ceramic foam. (2005) Journal of Materials Chemistry, vol. 1 . pp. 4041-4050. ISSN 0959-9428

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Official URL: http://dx.doi.org/10.1039/b505654c

Abstract

Consolidated nanocomposite foams containing a large quantity of carbon nanotubes (CNTs) within millimetre-sized pores are prepared for the first time. A commercial ceramic foam is impregnated by a 60 g L21 slurry of a (Mg(12x)(Co0.75Mo0.25)xO solid solution (x = 0.01, 0.05, 0.1 and 0.2) powder in ethanol. Three successive impregnations led to deposits several tens of mm thick, with a good coverage of the commercial-ceramic pore walls but without closing the pores. The materials were submitted to a CCVD treatment in H2–CH4 atmosphere in order to synthesise the CNTs. When using attrition-milled powders, the carbon is mostly in the form of nanofibres or disordered carbon rather than CNTs. Using non-milled powders produces a less-compact deposit of catalytic material with a higher adherence to the walls of the ceramic foam. After CCVD, the carbon is mostly in the form of high-quality CNTs, as when using powder beds, their quantity being 2.5 times higher. The so-obtained consolidated nanocomposite materials show a multi-scale pore structuration.

Item Type:Article
Additional Information:Journal of Materials Chemistry Homepage http://www.rsc.org/Publishing/Journals/JM/Index.asp
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:Thomas Bonnecarere

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