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Preparation, morphology, and microstructure of diameter-controllable vapor-grown carbon nanofibers

Published online by Cambridge University Press:  31 January 2011

Yue-Ying Fan ,
Feng Li ,
Hui-Ming Cheng ,
Ge Su ,
Ying-Da Yu  and
Zu-Hong Shen
Yue-Ying Fan
Affiliation:
Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110015, China
Feng Li
Affiliation:
Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110015, China
Hui-Ming Cheng
Affiliation:
Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110015, China
Ge Su
Affiliation:
Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110015, China
Ying-Da Yu
Affiliation:
Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110015, China
Zu-Hong Shen
Affiliation:
Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110015, China
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Abstract

Pure vapor-grown carbon nanofibers (VGCNF's) with controllable diameters of 10–200 nm were prepared by an improved floating catalyst method. Through transmission electron microscopy (TEM) observation, it was found that VGCNF's have a duplex structure, a hollow and high-crystallinity graphite filament called primary carbon fiber surrounded by a pyrocarbon layer with low graphite crystallinity. It was observed using high-resolution TEM that VGCNF's have excellent graphitic crystallinity with graphite layers stacked neatly parallel to fiber axis. Moreover, x-ray diffraction results showed that the graphitic crystallinity of carbon fibers became higher with decreasing diameter of carbon fibers.

Type
Articles
Information
Journal of Materials Research , Volume 13 , Issue 8 , August 1998 , pp. 2342 - 2346
Copyright
Copyright © Materials Research Society 1998

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References

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