De Resende, Valdirene Gonzaga and Hui, Xu and Laurent, Christophe and Weibel, Alicia and De Grave, Eddy and Peigney, Alain Fe-substituted mullite powders for the in situ synthesis of carbon nanotubes by catalytic chemical vapor deposition. (2009) Journal of Physical Chemistry C, 113 (26). 11239-11245. ISSN 1932-7447
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(Document in English)
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Official URL: http://dx.doi.org/10.1021/jp901780f
Abstract
Powders of iron-substituted mullite were prepared by combustion and further calcination in air at different temperatures. A detailed study involving notably Mo¨ssbauer spectroscopy showed that the Fe3+ ions are distributed between the mullite phase and a corundum phase that progressively dissolves into mullite upon the increase in calcination temperature. Carbon nanotube-Fe-mullite nanocomposites were prepared for the first time by a direct method involving a reduction of these powders in H2-CH4 and without any mechanical mixing step. The carbon nanotubes formed by the catalytic decomposition of CH4 on the smallest metal particles are mostly double-walled and multiwalled, although some carbon nanofibers are also observed.
Item Type: | Article |
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Additional Information: | Thanks to American Chemical Society editor. The definitive version is available at http://portal.acs.org/ The original PDF of the article can be found at Journal of Physical Chemistry C website : http://pubs.acs.org/doi/abs/10.1021/jp901780f |
Audience (journal): | International peer-reviewed journal |
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Institution: | French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE) Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE) Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE) Other partners > Universiteit Gent - UGENT (BELGIUM) |
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Deposited On: | 07 Jan 2011 14:01 |
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