Frontiers of Photo-catalysis and Photo-reaction at Solid Surfaces. Overall Water Splitting on Cu2O.

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Other Title
  • 光触媒・光表面反応の新展開　　Ｃｕ２Ｏによる水の完全分解
  • Cu2O ニ ヨル ミズ ノ カンゼン ブンカイ

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Abstract

Recently, we have found that Cu2O powder suspended in distilled water by stirring decompose water catalytically into H2 and O2 under visible light irradiation. To our surprise, the experiment revealed that the catalytic decomposion of water by Cu2O is due to the mechanical energy produced in to stirring and the reaction under stirring was enhanced by the irradiation of visible light having photon energies more than the band gap energy of Cu2O(2 eV). The reaction is regarded as “mechano-catalytic overall splitting”; and is distinct from conventional photocatalytic water decomposition.

Journal

  • Hyomen Kagaku

    Hyomen Kagaku 20 (2), 66-72, 1999

    The Surface Science Society of Japan

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