Journal of Industrial and Engineering Chemistry

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Visible-light photocatalytic activity of $TiO_{2-x}$by heat treatment and plasma-heat treatment

  • Chae, YoonKeun (Department of Chemical and Biomolecular Engineering, University of Yonsei) ;
  • Park, JinWon (Department of Chemical and Biomolecular Engineering, University of Yonsei) ;
  • Mori, Shinsuke (Department of Chemical Engineering, Tokyo Institute of Technology) ;
  • Suzuki, Masaaki (Department of Chemical Engineering, Tokyo Institute of Technology)
  • Published : 2012.07.25
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Abstract

The partial reduction of $TiO_2$ was attempted by heat treatment and plasma-heat treatment and it was carried out to investigate the photocatalytic characteristics of partially reduced $TiO_2$ ($TiO_{2-x}$) in the visible-light region. As a result, the plasma-heat treatment shows significantly stronger than the heat treatment for the visible-light photocatalytic activity of $TiO_2$. The red-shifted absorption bands in the visible-light region of $TiO_{2-x}$ by plasma-heat treatment gave broader than one by heat treatment. The $TiO_{2-x}$ by heat treatment and plasma-heat treatment was changed white to beige color, and white to navy, respectively.

Keywords

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