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The formation mechanism of the coaxial carbon–metal nanowires in a chemical vapor deposition process

✍ Scribed by Weizhong Qian; F. Wei; T. Liu; Z.W. Wang

Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
373 KB
Volume
126
Category
Article
ISSN
0038-1098

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✦ Synopsis

In the synthesis of carbon nanotubes from ethylene decomposition by a Fe/Mo/Al 2 O 3 catalyst at 823 K, the long and continuous coaxial carbon -metal nanowires up to 540 nm is observed. And for the first time, it is observed that the coaxial carbon-metal nanowires can grow in tip and base growth mode simultaneously. A detailed formation mechanism is proposed, where the aggregation of metal particles, lift-up of nanotubes obeying different growth modes and the deformation of metal particles by nanotubes are considered as the necessary steps for the formation of the nanowires.

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