Carbon linear chains inside multiwalled nanotubes
| Autor: | A. Cupolillo, L. Papagno, Enzo Cazzanelli, Marco Castriota, C. Giallombardo, Lorenzo S. Caputi |
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| Rok vydání: | 2007 |
| Předmět: |
Materials science
Carbon nanofiber Selective chemistry of single-walled nanotubes Nanotechnology Mechanical properties of carbon nanotubes Surfaces and Interfaces Carbon nanotube CARBYNE FORMS Condensed Matter Physics BAND Surfaces Coatings and Films law.invention Optical properties of carbon nanotubes CHEMICAL-VAPOR-DEPOSITION RAMAN Carbon nanobud Chemical engineering law Materials Chemistry SPECTRA Carbide-derived carbon Carbon nanotube supported catalyst |
| Zdroj: | Surface science 601 (2007): 3926–3932. info:cnr-pdr/source/autori:Cazzanelli, E; Caputi, L; Castriota, M; Cupolillo, A; Giallombardo, C; Papagno, L/titolo:Carbon linear chains inside multiwalled nanotubes/doi:/rivista:Surface science/anno:2007/pagina_da:3926/pagina_a:3932/intervallo_pagine:3926–3932/volume:601 |
| ISSN: | 0039-6028 |
| DOI: | 10.1016/j.susc.2007.04.153 |
| Popis: | Multiwalled carbon nanotubes have been deposited on graphite cathodes by using an arc discharge technique in He atmosphere, with the insertion of a catalytic Ni-Cr mixture as well as without catalysers. The topography of such deposition has been investigated by SEM, while a parallel micro-Raman study has revealed, in particular regions of the deposited cathodes, strong bands in the range 11780-1860 cm(-1), assignable to linear carbon chains inside the nanotubes. The variation of intensity, frequency and bandwidth of such bands has been investigated, in relation with the spectral characters of the host multiwalled carbon nanotube. In the cathode deposited without catalyst a quite ordered configuration of multiwalled carbon nanotubes is obtained in the central zone, while the maximum concentration of linear carbon chains is found in a ring shaped zone just inside the border. In sample obtained with catalyst the deposited multiwalled carbon nanotubes appear always more disordered, and a remarkable concentration of carbon chains appears in some zones, with a more casual distribution. (C) 2007 Elsevier B.V. All rights reserved. |
| Databáze: | OpenAIRE |
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