A Novel Photodeposition Method in the Presence of Nitrate Ions for Loading of an Iridium Oxide Cocatalyst for Water Splitting

DOI PDF 14 Citations 11 References
  • Iwase Akihide
    Department of Applied Chemistry, Faculty of Science, Science University of Tokyo
  • Kato Hideki
    Department of Applied Chemistry, Faculty of Science, Science University of Tokyo
  • Kudo Akihiko
    Department of Applied Chemistry, Faculty of Science, Science University of Tokyo Core Research for Evolutional Science and Technology, Japan Science and Technology Agency (CREST, JST)

Abstract

IrO2 cocatalysts for water splitting were photodeposited from aqueous solution of (NH4)2[IrCl6] or Na3[IrCl6] in the presence of nitrate ions on La-doped NaTaO3 (denoted as NaTaO3:La) photocatalysts, while metallic iridium particles were deposited in the absence of nitrate ions. The IrO2-loaded NaTaO3:La showed the activity for water splitting 2.5 times higher than the nonloaded NaTaO3:La. In contrast, the steady activity was not obtained for the metallic iridium-loaded photocatalyst, because the back reaction quickly proceeded.

Journal

  • Chemistry Letters

    Chemistry Letters 34 (7), 946-947, 2005

    The Chemical Society of Japan

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