ビナフトール修飾酸化チタンによる粉末による可視光誘起水素発生 Visible Light-induced Hydrogen Evolution from Aqueous Suspensions of Titanium(IV) Oxide Modified with Binaphthol

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Abstract

<p>The reaction between titanium(IV) oxide (TiO<sub>2</sub>) powders and 1,1′-binaphthalene-2,2′-diol (bn(OH)<sub>2</sub>), both of which are originally colorless, led to the formation of surface TiO<sub>2</sub>-bn(OH)<sub>2</sub> complexes giving a broad absorption in the visible-light region below <i>ca.</i> 550 nm. When the surface complex was made on TiO<sub>2</sub> loaded with platinum deposits, the powder exhibited photocatalytic activity for H<sub>2</sub> evolution from deaerated triethanolamine solution under visible-light irradiation (>430 nm). On the basis of the experimental results, the reaction mechanism seems to involve visible-light excitation of the surface complexes, electron injection to TiO<sub>2</sub>, and its migration to platinum deposits, where reduction of H<sup>+</sup> takes place.</p>

Journal

  • Electrochemistry

    Electrochemistry 70(6), 442-445, 2002-06-05

    The Electrochemical Society of Japan

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Codes

  • NII Article ID (NAID)
    10008573556
  • NII NACSIS-CAT ID (NCID)
    AN00151637
  • Text Lang
    ENG
  • Article Type
    ART
  • ISSN
    13443542
  • NDL Article ID
    6180063
  • NDL Source Classification
    ZP1(科学技術--化学・化学工業)
  • NDL Call No.
    Z17-14
  • Data Source
    CJP  NDL  J-STAGE 
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