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Optical Property of Vanadium Oxide Nanotube Suspensions

Published online by Cambridge University Press:  01 February 2011

L. Q. Mai ,
W. Chen ,
H. Yu ,
Y. Y Qi ,
Y Dai  and
J. F. Peng
L. Q. Mai
Affiliation:
1 Key Laboratory of Silicate Materials Science and Engineering (WUT), Ministry of Education, Wuhan University of Technology, Wuhan 430070 Hubei, P. R. China
W. Chen*
Affiliation:
Institute of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070 Hubei, P. R. China
H. Yu
Affiliation:
Institute of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070 Hubei, P. R. China
Y. Y Qi
Affiliation:
Institute of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070 Hubei, P. R. China
Y Dai
Affiliation:
Institute of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070 Hubei, P. R. China
J. F. Peng
Affiliation:
Institute of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070 Hubei, P. R. China
*
* E-mail: [email protected]
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Abstract

Vanadium oxide nanotube dispersions were investigated in water suspensions and characterized by TEM, absorption spectroscopy and optical limiting testing. The results show that the nanotubes are unrolled and oxidized after 6-day aging, resulting in some change of optical limiting property at the two wavelengths (532 and 1064 nm). The 1.27-eV absorption band is assigned as a superposition of both V d→d and V4+→V5+ charge-transfer excitations, and the features at 2.9 eV are attributed to O 2p→V 3d charge-transfer excitations.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 848: Symposium FF – Solid-State Chemistry of Inorganic Materials V , 2004 , FF9.10
Copyright
Copyright © Materials Research Society 2005

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References

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