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, vol. 113 (n° 26). pp. 11239-11245. ISSN 1932-7447
(Document in English)
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Official URL: http://dx.doi.org/10.1021/jp901780f
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.
|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|
|Institution:||French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)|
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS (FRANCE)
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|Deposited By:||Nihad Lahdifi|
|Deposited On:||07 Jan 2011 14:01|
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