Purification and structural annealing of multiwalled carbon nanotubes at graphitization temperatures

Citation
R. Andrews et al., Purification and structural annealing of multiwalled carbon nanotubes at graphitization temperatures, CARBON, 39(11), 2001, pp. 1681-1687
Citations number
14
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
CARBON
ISSN journal
0008-6223 → ACNP
Volume
39
Issue
11
Year of publication
2001
Pages
1681 - 1687
Database
ISI
SICI code
0008-6223(2001)39:11<1681:PASAOM>2.0.ZU;2-5
Abstract
In this work, we present a systematic study of the effects of graphitizatio n on the structural perfection of multiwalled carbon nanotubes. High purity nanotubes were produced by a low temperature CVD method and subsequently a nnealed at temperatures between 1600 and 3000 degreesC. The nanotubes were characterized for chemical purity, interlayer spacing, and defect healing. The graphitization procedure was found to remove residual metal catalyst in the nanotubes and reduce the wall defects as reflected in a reduced interl ayer spacing between the graphene shells. Graphitization presents a low-cos t, commercially viable method of purifying and ordering multiwall carbon na notubes. (C) 2001 Elsevier Science Ltd. All rights reserved.