| abstract |
[PROBLEMS] To oxidize, reduce, and decompose harmful substances by irradiating light, to detoxify harmful substances, or to clean dirt and to provide antibacterial properties, and to detoxify harmful substances using this catalyst. The present invention provides a method, a method for decomposing and cleaning dirt substances, and an antibacterial method. A photocatalyst comprising a composite oxide having a light absorption edge in the visible light region, wherein the composite oxide is represented by the following formula 1. (Formula 1) Ag x PO y (2.8 ≦ x ≦ 3.2, 3.8 ≦ y ≦ 4.2, x / y = 0.66 to 0.84) [Selection figure] None |