Coadsorption of Cationic Dyes with Surfactants on Colloidal TiO_2 Particles to Achieve Photosensitization in Highly Acidic Media

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著者

    • LING Zang
    • Institute of Photographic Chemistry, Academia Sinica
    • PING Qu
    • Institute of Photographic Chemistry, Academia Sinica
    • JINCAI Zhao
    • Institute of Photographic Chemistry, Academia Sinica
    • TAO Shen
    • Institute of Photographic Chemistry, Academia Sinica

抄録

Absorption and emission characteristics of rhodamine B (RB) were investigated in aqueous solutions of sodium dodecylbenzenesulfonate (DBS) at pH 0.9 in the absence and presence of colloidal TiO<SUB>2</SUB>. From the spectral changes one can obtain detailed information about the interaction between RB, DBS and TiO<SUB>2</SUB>. No adsorption of RB onto the surface of TiO<SUB>2</SUB> occurred at the quite low pH due to the strong electrostatic repulsion between RB molecules and the positively charged TiO<SUB>2</SUB> particles. Addition of DBS was found to be capable of improving the coadsorption of RB onto the surface of TiO<SUB>2</SUB> particles, and thus realizing and efficient charge injection from the excited state of RB into the conduction band of TiO<SUB>2</SUB>.

収録刊行物

  • Chemistry letters  

    Chemistry letters 1997(8), 791-792, 1997-08 

    The Chemical Society of Japan

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各種コード

  • NII論文ID(NAID)
    10002614069
  • 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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