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PHOTOCATALYST COMPOSITION AND METHOD FOR PRODUCING A PHOTOCATALYST COMPOSITION 新技術説明会

外国特許コード F120006279
整理番号 SHINGI20111213
掲載日 2012年3月1日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2011JP053946
国際公開番号 WO 2011/148683
国際出願日 平成23年2月23日(2011.2.23)
国際公開日 平成23年12月1日(2011.12.1)
優先権データ
  • 特願2010-121956 (2010.5.27) JP
発明の名称 (英語) PHOTOCATALYST COMPOSITION AND METHOD FOR PRODUCING A PHOTOCATALYST COMPOSITION 新技術説明会
発明の概要(英語) Provided are a photocatalyst composition that can split water into oxygen and hydrogen by absorbing visible light without using redox reagents or sacrificial agents and a method for producing the photocatalyst composition. The photocatalyst composition is configured by bringing a hydrogen-evolving photocatalyst which splits water to evolve hydrogen when irradiated with light in contact with an oxygen-evolving photocatalyst which splits water to evolve oxygen when irradiated with light. The hydrogen-evolving photocatalyst comprises a substance wherein the lower edge of the conduction band is a more negative potential than 0 V, and the substance has a band gap energy of less than 3.0 eV. The oxygen-evolving photocatalyst comprises a substance wherein the potential of the upper edge of the valence band with respect to the standard hydrogen electrode is more positive than 1.23 V, and the substance has a band gap energy less than 3.0 eV. When potentials with respect to the standard hydrogen electrode potential are compared, the Fermi level of said hydrogen-evolving photocatalyst is more negative than or equal to the Fermi level of said oxygen-evolving photocatalyst.
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • UNIVERSITY OF YAMANASHI
  • 発明者(英語)
  • IRIE, Hiroshi
  • SATO, Tetsuya
  • KITTA, Taiki
国際特許分類(IPC)
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