Promotion of Photocatalytic Activity of Titania by the Combination with Nitrogen-doped Titania

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  • LIU Bin
    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University Department of Materials Science, School of Physical Science and Technology
  • YIN Shu
    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University
  • LI Ruixing
    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University
  • WANG Yuhua
    Department of Materials Science, School of Physical Science and Technology
  • SATO Tsugio
    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University

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説明

Titania/nitrogen-doped titania (TiO2/TiO2-xNy) composite was prepared by mechanical milling in liquid medium and the phase composition, specific surface area, photo chemical properties, and photocatalytic activities were characterized. TiO2/TiO2-xNy composites showed excellent photocatalytic ability for the oxidative destruction of nitrogen monoxide and acetaldehyde. It is suggested that the doped nitrogen in TiO2-xNy acts as the acceptor of photoinduced holes on TiO2 to depress the recombination of the electron-hole and improve the photocatalytic activity.<br>

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