Journal
APPLIED PHYSICS LETTERS
Volume 80, Issue 7, Pages 1267-1269Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1450264
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Straight long carbon nanofibers with a large hollow core obtained by a floating reactant method show a stacking morphology of truncated conical graphene layers, which in turn exhibit a large portion of open edges on the outer surface and also in the inner channels. Through a judicious choice of oxidation conditions, nanofibers with increased active edge sites are obtained without disrupting the fiber's morphology. A graphitization process induces a morphological change from a tubular type to a reversing saw-toothed type and the formation of loops along the inner channel of the nanofibers, accompanied by a decrease in interlayer spacing. (C) 2002 American Institute of Physics.
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