| abstract |
The purpose of the present invention is to inexpensively provide a photocatalyst, which is a photocatalyst that can be used in organic material decomposition or sterilization, is not limited in utilization situations, and is highly safe, and which exhibits activity by absorbing light of a wide range of wavelengths including visible light. Provided are: a photocatalyst formed by mixing reducing organic compound having iron reducing capability and an iron supplying raw material in the presence of water and the reaction product obtained as the active ingredient, specifically, a photocatalyst exhibiting photocatalytic activity when irradiated with light of wavelengths among ultraviolet rays, visible light, or infrared light; an organic material decomposition method characterized by bringing the photocatalyst and material to be decomposed into contact and irradiating the same with light of wavelengths among ultraviolet rays, visible light, and infrared rays; and a sterilization method characterized by bringing the photocatalyst and material to be sterilized into contact and irradiating the same with light of wavelengths among ultraviolet rays, visible light, or infrared rays. |