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Esr of Purified Carbon Nanotubes Produced Under Different Helium Pressures

Published online by Cambridge University Press:  10 February 2011

S. P. Wong ,
Haiyan Zhang ,
Ning Ke  and
Shaoqi Peng
S. P. Wong
Affiliation:
Department of Electronic Engineering, The Chinese University of Hong Kong, Hong Kong, China
Haiyan Zhang
Affiliation:
Department of Physics, Zhongshan University, Guangzhou 510275, China
Ning Ke
Affiliation:
Department of Electronic Engineering, The Chinese University of Hong Kong, Hong Kong, China
Shaoqi Peng
Affiliation:
Department of Physics, Zhongshan University, Guangzhou 510275, China
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Abstract

Carbon nanotubes were prepared by the dc arc-discharge method under a controlled helium pressure ranging from 10 to 80 kPa and subsequently purified by oxidation in air. The purified carbon nanotubes were observed by transmission electron microscopy. The room temperature electron spin resonance (ESR) spectra of the purified nanotubes were measured. The variations in the ESR line shape, g-value, linewidth and relative spin density of the purified nanotubes on helium pressure were studied and discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 497: Symposium Z – Recent Advances in Catalytic Materials , 1997 , 151
Copyright
Copyright © Materials Research Society 1998

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References

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