| 摘要 |
PROBLEM TO BE SOLVED: To provide a photocatalyst element which can demonstrate a catalystic action even with the use of feeble rays, and also be miniaturized. SOLUTION: This photocatalyst element 1a includes a base material 3 into which allows an incidence of ultraviolet light to take place, a metallic coating layer 4 which is formed on the surface of the base material 3 and forms an evanescent light by making a total reflection of the incoming ultraviolet light into the base material 3 and a photocatalyst film layer 5 composed of an anatase-type TiO<SB>2</SB>. The metallic coating layer 4 is composed of metallic aluminum with a thickness ranging from 10 to 50 nm. The base material 3 works as a prism, and a photocatalyst element 1b has an anatase-type TiO<SB>2</SB>film layer 6 with the same refractive index as an anatase-type TiO<SB>2</SB>which forms the photocatalyst film layer 5 between the surface of the base material 3 and the surface of the metallic coating layer 4. COPYRIGHT: (C)2010,JPO&INPIT |
