A Promoting Effect of NH_4F Addition on the Photocatalytic Activity of Sol-Gel TiO_2 Films

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著者

    • YAMAMOTO Miwako
    • Department of Applied Chemistry, Faculty of Science and Engineering, Kinki University
    • TADA Hiroaki
    • Environmental Science Research Institute, Kinki University
    • ITO Seishiro
    • Department of Applied Chemistry, Faculty of Science and Engineering, Kinki University

抄録

The photoreactivity of sol-gel (SG)-TiO<SUB>2</SUB> films was enhanced significantly with addition of a small amount of ammonium fluoride (AF) into the SG-starting solution. The rate of the TiO<SUB>2</SUB> photoinduced oxidation of an overlying methylsiloxane monolayer reached a maximum near [AF]/[Ti] molar ratio of 1.35 × 10<SUP>−2</SUP>. The apparent rate constant was as much as 8.2 times greater than of AF non-added system. X-Ray diffraction analyses clearly indicated that the principal factor is the improvement in the anatase crystallinity caused by F<SUP>−</SUP> ions.

収録刊行物

  • Chemistry letters  

    Chemistry letters 1998(8), 707-708, 1998-08-05 

    The Chemical Society of Japan

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各種コード

  • NII論文ID(NAID)
    10004483869
  • NII書誌ID(NCID)
    AA00603318
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    03667022
  • データ提供元
    CJP書誌  J-STAGE 
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