VあるいはWをドープしたTiO_2被覆中空ガラス球の製造と光触媒の特性  [in Japanese] Preparation of V or W Doped TiO_2 Coating Hollow Glass Spheres and Photocatalytic Characterization  [in Japanese]

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Author(s)

    • 柳然 太 YU Yeon-tae
    • 韓国地質資源研究院資源活用研究部 Minerals and Materials Processing Division, Korea Institute of Geoscience & Material Resources
    • 木村 邦夫 KIMURA Kunio
    • 産業技術総合研究所基礎素材研究部門 Institute for Structural and Engineering Materials, National Institute of Advanced Industrial Science and Technology

Abstract

To improve the photocatalytic activity of TiO<sub>2</sub> coated hollow volcanic glass spheres, vanadium or tungsten hydroxide was doped on the surface of volcanic glass in the aqueous solution of NH<sub>4</sub>VO<sub>3</sub> or 5(NH<sub>4</sub>)<sub>2</sub>O·12WO<sub>3</sub>·5H<sub>2</sub>O. The volcanic glass was ballooned by heat treatment in temperature ranges of 960 ∼ 1,000 °C, and these hydroxides were translated into metallic oxides in this process.<BR>On increasing the vanadium loading, the crystal size of anatase TiO<sub>2</sub> on the surface of volcanic glass spheres increased and the phase transformation of anatase to rutile occurred. As the result, the removal rate of NO gas was decreased. Whereas, when the tungsten was doped, there was not almost the change of the crystal size of anatase TiO<sub>2</sub> and the phase transformation of anatase to rutile was not observed. The crystal size of anatase TiO<sub>2</sub> appeared about 12nm and the removal rate of NO gas was increased with raising the tungsten loading. The maximum removal rate of NO gas was observed with adding the tungsten of 0.54 wt%.

Journal

  • Shigen-to-Sozai

    Shigen-to-Sozai 118(3), 206-210, 2002-04-25

    The Mining and Materials Processing Institute of Japan

References:  18

Codes

  • NII Article ID (NAID)
    10008226380
  • NII NACSIS-CAT ID (NCID)
    AN10062646
  • Text Lang
    JPN
  • Article Type
    ART
  • ISSN
    09161740
  • NDL Article ID
    6151737
  • NDL Source Classification
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL Call No.
    Z17-315
  • Data Source
    CJP  NDL  J-STAGE 
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