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Hydrothermal Synthesis of Metal-doped BiVO4 Powder and its Thermochromic Properties

금속이 도핑된 BiVO4 분말의 수열 합성 및 이의 열 변색 특성

  • Received : 2015.09.03
  • Accepted : 2015.10.22
  • Published : 2015.12.10

Abstract

In this study, pure $BiVO_4$ powder and metal-doped $M-BiVO_4$ (M = Mg, Cu) powder, well known as thermochromic materials, were prepared from a mixed aqueous solution of bismuth nitrate ($Bi(NO_3)_3$) and ammonium vanadate ($NH_4VO_3$) in autoclave by hydrothermal method. The crystal structure, microstructure, and thermochromic property of samples were analyzed using FE-SEM, FT-IR, XRD, DSC, UV-Vis-NIR spectroscopy and colorimeter. When heating samples above phase transition temperature, the color of $M-BiVO_4$ (M = Mg, Cu) sample was thermally changed more clearly than that of using only pure $BiVO_4$ sample.

Keywords

bismuth vanadate;metal dope;hydrothermal;monoclinic;thermochromic

Acknowledgement

Supported by : 부경대학교

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