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Synthesis and characterization of nanocrystalline tungsten oxide nanosheets in large scale

Published online by Cambridge University Press:  31 January 2011

Rong Hu ,
Huasheng Wu  and
Kunquan Hong
Huasheng Wu*
Affiliation:
Physics Department and the University of Hong Kong—Chinese Academy of Sciences (HKU-CAS) Joint Laboratory on New Materials, The University of Hong Kong, Hong Kong, Peoples Republic of China
Kunquan Hong
Affiliation:
Physics Department and the University of Hong Kong—Chinese Academy of Sciences (HKU-CAS) Joint Laboratory on New Materials, The University of Hong Kong, Hong Kong, Peoples Republic of China
*
a) Address all correspondence to this author. e-mail: hswu@hkusub.hku.hk
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Abstract

A high quantity of tungsten oxide nanosheets were synthesized by oxidizing tungsten plates with potassium hydrate as the catalyst and tungsten plate as the substrate. The structural and geometrical properties were characterized by various techniques. It was found that the crystalline nanosheets have a WO3 structure with thicknesses of 30–50 nm and widths up to tens of micrometers. There exist two characteristic acute angles of about 37° or 51° on the nanosheet plane. The formation of these angles and the growth mechanism were discussed.

Keywords

NanostructurePhysical vapor deposition (PVD)Transmission electron microscopy (TEM)
Type
Articles
Information
Journal of Materials Research , Volume 24 , Issue 1 , January 2009 , pp. 187 - 191
Copyright
Copyright © Materials Research Society 2009

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