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Synthesis and characterization of nanocrystalline tungsten oxide nanosheets in large scale

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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.

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Acknowledgment

This work is financially supported by the Research Grant Council of the Hong Kong Special Administrative Region, China under Grant No. HKU 7047/05P.

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Authors and Affiliations

  1. 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, People’s Republic of China

    Rong Hu, Huasheng Wu & Kunquan Hong

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  1. Rong Hu
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  2. Huasheng Wu
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  3. Kunquan Hong
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Correspondence to Huasheng Wu.

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Hu, R., Wu, H. & Hong, K. Synthesis and characterization of nanocrystalline tungsten oxide nanosheets in large scale. Journal of Materials Research 24, 187–191 (2009). https://doi.org/10.1557/JMR.2009.0026

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