Synthesis and Size-Control of Monoclinic Crystalline Phase VO2 Powders

Min Huang; Kai Wang; Yue Huang; Zhong Hua Zhou; Shirley Shen

doi:10.4028/www.scientific.net/MSF.847.190

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Dependence of Negative Substrate Bias on the Optical and Electrical Properties of W-Doped Vanadium Dioxide Thin Films
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HomeMaterials Science ForumMaterials Science Forum Vol. 847Synthesis and Size-Control of Monoclinic...

Synthesis and Size-Control of Monoclinic Crystalline Phase VO₂ Powders

Abstract:

The exploration of efficient preparation methods of VO₂(M) powders, especially the controls of particle sizes, is a challenge. In this article VO₂(M) powders were prepared by a liquid phase precipitation and post annealing method. The structure and morphology of the VO₂(M) powders were characterized by XRD and SEM. The effects of annealing temperature and the amounts of additive SiO₂ aerogels on the particle size controlling were studied .The thermal phase transition properties were characterized by DSC analysis. The results reveal that the transformation of crystal phases from V₆O₁₃ to VO₂(M) takes place in the annealing process and the additive of SiO₂ aerogels can control the particle size and promote the particle size to be smaller effectively.