Investigation of nanoporous carbon powders produced by high energy ball milling and formation of carbon nanotubes during subsequent annealing
Date
1999
Authors
Chen, Ying
Fitz Gerald, John
Chadderton, Lewis
Chaffron, Laurent
Journal Title
Journal ISSN
Volume Title
Publisher
Trans Tech Publications
Abstract
Nanoporous structure was found in graphite samples after ball milling at ambient temperature. The internal micropore surface area, as determined using the T-plot method, was found to vary during milling, in association with phase transformations of the graphite. Structural changes from hexagonal to turbostratic, and to amorphous phases were observed and investigated using X-ray diffraction analysis and transmission electron microscopy. Carbon nanotubes were obtained by the annealing of the milled samples at 1400°C for 6 hours in nitrogen gas.
Description
Keywords
Keywords: Annealing; Ball milling; Crystal structure; Nanotubes; Phase transitions; Porosity; Powders; Temperature; Transmission electron microscopy; X ray diffraction analysis; Amorphous phases; Carbon nanotubes; Hexagonal; Internal micropore surface area; Nanopor
Citation
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Source
Journal of Metastable and Nanocrystalline Materials
Type
Journal article