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Phosphate photocatalyst comprising metal ion in d10 or d0 electron state

外国特許コード F110005171
整理番号 A121-21US
掲載日 2011年8月25日
出願国 アメリカ合衆国
出願番号 48179402
公報番号 20040204313
公報番号 7015172
出願日 平成14年6月12日(2002.6.12)
公報発行日 平成16年10月14日(2004.10.14)
公報発行日 平成18年3月21日(2006.3.21)
国際出願番号 JP2002005862
国際公開番号 WO2003008097
国際出願日 平成14年6月12日(2002.6.12)
国際公開日 平成15年1月30日(2003.1.30)
優先権データ
  • 特願2001-211959 (2001.7.12) JP
  • 2002WO-JP05862 (2002.6.12) WO
発明の名称 (英語) Phosphate photocatalyst comprising metal ion in d10 or d0 electron state
発明の概要(英語) (US7015172)
A photo-catalyst comprising a compound having structure composing a network formed by mutual connection of an unit constructing oxygen octahedra or tetrahedra containing a transition metal ion or a typical metallic ion in d10 or d0 configuration and an unit constructing PO4 tetrahedron connected to said oxygen octahedra or tetrahedra, further containing an alkali metal besides said metallic ion as a consituent element, for example, AXNb2mP4O6m+8 (wherein A is Na, K or Li, X is 2, 3 or 4 and m is 3, 3.5 or 4) AXTa2mP4O6m+8 (wherein A is Na, K or Li, X is 2, 3 or 4 and m is 3, 3.5 or 4) AXIn2mP4O6m+8 (wherein A is Na, K or Li, X is 2, 3 or 4 and m is 3, 3.5 or 4) and RuO2 is loaded on the compound.
The photo-catalyst can be used for the complete decomposition of water.
特許請求の範囲(英語) [claim1]
1. A RuO2-loaded photo-catalyst, comprising a compound having structure composing a network formed by mutual connection of an unit constructing oxygen octahedra or tetrahedra containing a transition metal ion or a metallic ion in d10 or d0 configuration and an unit constructing PO4 tetrahedra connected to said oxygen octahedra or tetrahedra, further containing an alkali metal besides said transition metal ion or metallic ion as a consituent element.
[claim2]
2. A photo-catalyst for complete decomposition of water composed of the photo-catalyst of claim 1.
[claim3]
3. The RuO2-loaded photo-catalyst of claim 1, wherein a metal composing the transition metal ion or metallic ion in d0 configuration is Nb or Ta and chemical composition of the compound is AXMe2mP4O6m+8, wherein A is Na, K or Li, Me is Nb or Ta, X is 2, 3 or 4 and m is 3, 3.5 or 4.
[claim4]
4. A photo-catalyst for complete decomposition of water composed of the photo-catalyst of claim 3.
[claim5]
5. The RuO2-loaded photo-catalyst of claim 3, wherein the oxygen octahedra containing the transition metal ion or metallic ion in d0 configuration is strained structure and has dipole moment and has a network structure.
[claim6]
6. A photo-catalyst for complete decomposition of water composed of the photo-catalyst of claim 5.
[claim7]
7. The RuO2-loaded photo-catalyst of claim 5, wherein the structure composing of the network is belonging to tungsten bronze phosphates having tunnel-like structure.
[claim8]
8. A photo-catalyst for complete decomposition of water composed of the photo-catalyst of claim 7.
[claim9]
9. The RuO2-loaded photocatalyst of claim 1, wherein a metal composing the transition metal ion or metallic ion in d10 configuration is In and chemical composition of the compound is A3InmPm+1O4m+4, wherein A is Na, K or Li ion and m is 1 or 2.
[claim10]
10. A photo-catalyst for complete decomposition of water composed of the photo-catalyst of claim 9.
[claim11]
11. The RuO2-loaded photo-catalyst of claim 9, wherein the oxygen octahedra containing the transition metal ion or metallic ion in d10 configuration is strained structure and has dipole moment and has a network structure.
[claim12]
12. A photo-catalyst for complete decomposition of water composed of the photo-catalyst of claim 11.
  • 発明者/出願人(英語)
  • INOUE YASUNOBU
  • JAPAN SCIENCE AND TECHNOLOGY AGENCY
国際特許分類(IPC)
米国特許分類/主・副
  • 502/208
  • 502/210
  • 502/213
  • 502/330
  • 502/353
参考情報 (研究プロジェクト等) CREST Creation and Functions of New Molecules and Molecular Assemblies AREA
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