光触媒による水分解を目指した表面構造制御と助触媒効果

書誌事項

タイトル別名
  • Contror of Surface Structure and Effect of Cocatalyst Aiming at Water Splitting over Photocatalyst
  • ヒカリ ショクバイ ニ ヨル ミズブンカイ オ メザシタ ヒョウメン コウゾウ セイギョ ト ジョ ショクバイ コウカ

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抄録

Activities of photocatalytic water splitting were improved by control of surface morphologies and loading of new cocatalysts. Doping of Ca, Sr and Ba into NaTaO3 photocatalysts led to formation of fine crystals and control of surface morphologies such as construction of nano-step structure. The photocatalytic activities for water splitting were improved by the doping. Photocatalytic overall water splitting on K4Nb6O17, Sr2Nb2O7, KTaO3, NaTaO3, and NaTaO3 doped with La photocatalysts were promoted by loading of nano-sized gold particles. The nano-sized Au worked as an active site for H2 evolution. An IrO2 cocatalyst which was photodeposited from an aqueous solution containing nitrate ions was also effective for overall water splitting. IrO2 functioned as an active site for O2 evolution.

収録刊行物

  • 表面科学

    表面科学 27 (7), 386-391, 2006

    公益社団法人 日本表面科学会

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