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Growth of carbon nanocoils using Fe–Sn–O catalyst film prepared by a spin-coating method

Published online by Cambridge University Press:  23 August 2011

Dawei Li
Affiliation:
School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024, People’s Republic of China
Lujun Pan*
Affiliation:
School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024, People’s Republic of China
*
a)Address all correspondence to this author. e-mail: lpan@dlut.edu.cn
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Abstract

Carbon nanocoils (CNCs) with diameter from 100 to 150 nm have been synthesized by catalytic decomposition of acetylene at 700 °C using Fe–Sn–O catalyst film prepared by a spin-coating method. The CNCs are much smaller in diameter than those synthesized using the catalysts prepared by a sol-gel method and a solution-dipping method. It is found that catalyst films with different morphologies are obtained by changing the spin-coating times, which lead to the formation of different multilayer carbon nanostructures, including CNCs/carbon layer/vertically aligned carbon nanotubes sandwich-like structures, and CNCs/carbon double-layer structures. Based on the experimental results, the growth mechanism of the multilayer carbon nanostructures has been proposed.

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Articles
Copyright
Copyright © Materials Research Society 2011

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