| 摘要 |
PROBLEM TO BE SOLVED: To produce a novel photocatalyst, especially a photocatalyst useful for perfectly decomposing water. SOLUTION: The photocatalyst, especially the photocatalyst for perfectly decomposing water comprises RuO2 supported A2XnOm or RuO2 supported BXnOm (wherein A in an alkali metal atom, B is an alkaline earth metal atom or Zn, X is metal ions of a d10 electron state, (n) is n=m/2 or n=m/3 and (n) is 2).
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