| 摘要 |
PROBLEM TO BE SOLVED: To provide a photocatalyst element that can exhibit catalytic activity even using weak visible light and can be made compact. SOLUTION: The photocatalyst element comprises a pair of substrates subjected to incident light, metal coating layers 3, 13 formed on the substrates, and photocatalyst thin film layers 4, 14 each formed on the metal coating layers 3, 13 respectively. The incident angle of the incident light is controlled by adjusting the substrates so that the incident light forms evanescent light on the surface of the metal coating layers 3, 13. The substrates are prisms 2, 12. The metal coating layer 13 comprises hole members 15 regularly disposed therein each having a diameter shorter than the wavelength of the incident light. The metal coating layers 3, 13 comprise one or more species of metal selected from the group consisting of Au, Ag, Al, Cu, Pt, and Pd. A ruthenium-pigment layer 6 or a biphotonic phosphor layer 7 is disposed between the metal layer 3 and the photocatalyst thin film layer 4. COPYRIGHT: (C)2009,JPO&INPIT
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