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Devaux, X., Tsareva, S. Y., Carteret, C., Dossot, M., Gregoire, B., Humbert, B., Mevellec, J.-Y., McRae, E., Aranda, L., Lamouroux, E. & Fort, Y. (2013) Chemisorbed nickel catalyst for the production of SWCNTs with a very narrow size distribution. Phys. Status Solidi B-Basic Solid State Phys. 250 2581–2585.
Added by: Laurent Cournède (2016-03-10 21:23:29) |
| Type de référence: Article DOI: 10.1002/pssb.201300090 Numéro d'identification (ISBN etc.): 0370-1972 Clé BibTeX: Devaux2013 Voir tous les détails bibliographiques  |
Catégories: PMN Mots-clés: alumina, carbon nanotubes, chemisorbed catalyst, diameter, diameter control, growth, walled carbon nanotubes Créateurs: Aranda, Carteret, Devaux, Dossot, Fort, Gregoire, Humbert, Lamouroux, McRae, Mevellec, Tsareva Collection: Phys. Status Solidi B-Basic Solid State Phys. |
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| Résumé |
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The synthesis of single-walled carbon nanotubes (SWCNTs) with the narrowest possible diameter distribution is a challenging undertaking in carbon nanoscience, which can be overcome through the fabrication of monodisperse catalytic nanoparticles. A technique is presented here to approach the diameter control of SWCNTs using a chemisorbed nickel acetylacetonate monolayer at the surface of silica. We show by Fourier transform infrared spectroscopy and thermogravimetry coupled with mass spectroscopy that a monolayer of nickel acetylacetonate is anchored with the silanol groups at the surface of the substrate. After thermal decomposition, the nickel remains bonded with these silanol groups, resulting in a good dispersion of the nickel over the silica surface. Using this catalyst, SWCNTs with a narrow diameter distribution were synthesized at moderate temperature. This opens new perspectives for the fabrication of uniform-diameter carbon nanotubes. (C) 2013 WILEY-VCH Verlag GmbH \& Co. KGaA, Weinheim
Added by: Laurent Cournède |