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Proper Combination of Catalyst Materials and Ethanol for High Yield in CVD Growth of Carbon Nanotubes

Published online by Cambridge University Press:  01 February 2011

Fumihiko Maeda  and
Yoshihiro Kobayashi
Fumihiko Maeda
Affiliation:
[email protected], NTT Corporation, NTT Basic Research Laboratories, 3-1 Morinosato-Wakamiya, Atsugi-shi, Kanagawa, N/A, Japan, +81-46-240-3423, +81-46-240-4711
Yoshihiro Kobayashi
Affiliation:
[email protected], NTT Corporation, NTT Basic Research Laboratories, 3-1 Morinosato-Wakamiya, Atsugi-shi, Kanagawa, 243-0198, Japan
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Abstract

Carbon nanotubes (CNTs) were grown by using a combination of ethanol and metallic Fe, which was not exposed to air before the growth. CNTs were also grown using intentionally oxidized Fe. The reaction products by these growths were analyzed by in situ photoelectron spectroscopy. We found that the oxidized Fe partially remained and did not completely reduce, resulting in low CNT yields. At higher growth temperature, oxide formation was found even when metallic Fe was used. These oxides induced a lowering of the decomposition efficiency of ethanol, resulting in difficulty of CNT growth by the combination of pure ethanol and Fe.

Keywords

x-ray photoelectron spectroscopy (XPS)chemical vapor deposition (CVD) (chemical reaction)Fe
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1081: Symposium P – Carbon Nanotubes and Related Low-Dimensional Materials , 2008 , 1081-P01-03
Copyright
Copyright © Materials Research Society 2008

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References

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