| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a catalyst having an excellent catalyst activity by depositing a noble metal such as palladium, platinum, or the like on a photocatalyst particle of titanium oxide or the surface of a substrate of a ceramic carrier in a highly dispersed state. <P>SOLUTION: A noble metal is deposited on the substrate surface by reducing a noble metal compounds to the noble metal at a relatively low temperature using at least one compound selected from hypophosphorous acid, phosphorous acid and their salts as a reducing agent in a solvent containing a photocatalyst particle, the substrate such as of a ceramic carrier. <P>COPYRIGHT: (C)2004,JPO |
