Visible-light photocatalytic activity of TiO_{2鈭?span style='font-style: italic'>x} by heat treatment and plasma-heat treatment

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• 作者：YoonKeun Chae^a ; JinWon Park^a ; Shinsuke Mori^b ; Masaaki Suzuki^b ; ^{chaeguy@yonsei.ac.kr}
• 关键词：TiO2&minus ; x ; Heat treatment ; Plasma-heat treatment ; Photocatalyst ; Visible-light irradiation
• 刊名：Journal of Industrial and Engineering Chemistry
• 出版年：2012
• 期刊代码：P29_1226086x
• 类别：ce
• 出版时间：25 July, 2012
• 卷：18
• 期：4
• 页码：1237-1241
• 文件大小：633 K

摘要

The partial reduction of TiO₂ was attempted by heat treatment and plasma-heat treatment and it was carried out to investigate the photocatalytic characteristics of partially reduced TiO₂ (TiO_2鈭?em>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 TiO₂. The red-shifted absorption bands in the visible-light region of TiO_2鈭?em>x by plasma-heat treatment gave broader than one by heat treatment. The TiO_2鈭?em>x by heat treatment and plasma-heat treatment was changed white to beige color, and white to navy, respectively.