Diamond nanoparticles to carbon onions transformation: X-ray diffraction studies

Tomita, S. and Burian, A. and Dore, John C. and LeBolloch, D. and Fujii, M. and Hayashi, S. (2002) Diamond nanoparticles to carbon onions transformation: X-ray diffraction studies. Carbon, 40 (9). pp. 1469-1474. ISSN 0008-6223. (The full text of this publication is not available from this repository)

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Abstract

Carbon onions prepared by high temperature annealing of ultradispersed diamond nanoparticles of about 5 nm in average diameter have been studied by X-ray diffraction using synchrotron radiation. The X-ray diffraction patterns show transformation of the diamond nanoparticles with sp(3) bonds into spherical carbon onions containing remaining diamond-like core and then into polyhedral onions with facets on their outer part and pure sp(2) graphitic bonds. The prepared onions form concentric-shell particles which comprise of about ten shells with an intershell distance of 0.35-0.36 nm. The large intershell distance suggests a considerable reduction in intershell interaction when compared to perfect graphite. The X-ray data are related to the previously performed studies by electron energy-loss spectroscopy and electron spin resonance.

Item Type: Article
Subjects: Q Science
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences
Depositing User: Maggie Francis
Date Deposited: 11 Mar 2009 22:49
Last Modified: 16 May 2014 14:44
Resource URI: http://kar.kent.ac.uk/id/eprint/13419 (The current URI for this page, for reference purposes)
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