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Organized growth of carbon nanotubes on Fe-doped alumina ceramic substrates

Suvacı, Ender and Çelik, Yasemin and Weibel, Alicia and Peigney, Alain and Flahaut, Emmanuel Organized growth of carbon nanotubes on Fe-doped alumina ceramic substrates. (2012) Carbon, 50 (8). 3092-3095. ISSN 0008-6223

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Official URL: http://dx.doi.org/10.1016/j.carbon.2012.02.034

Abstract

Polycrystalline Fe-doped alumina (Al2O3) ceramics have been produced and used as a substrate for organized carbon nanotubes (CNTs) growth by catalytic chemical vapor deposition (CCVD). In these substrates, Fe3+ cations, which are the catalyst source, are initially substituted to Al3+ in a-Al2O3, instead of being simply deposited as a thin Fe layer on the surface of the substrate. The selective reduction of these substrates resulted in in situ formation of homogeneously distributed Fe nanoparticles forming patterns at nanometerscale steps and kinks. These nanoparticles then catalyzed the growth of high quality CNTs, with some degree of organization thanks to their interaction with the topography of the substrate.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com/science/article/pii/S0008622312001558
HAL Id:hal-00857439
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Other partners > Anadolu University (TURKEY)
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 Toulouse III - Paul Sabatier - UPS (FRANCE)
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Deposited By: cirimat webmestre
Deposited On:22 Jul 2013 09:25

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