An infrared light catalyst and preparation method and application

The present invention discloses an infrared photocatalyst is a matrix Ag2O nanoparticles, a thickness unevenness of the surface covering layer composed Ag2S2O7; thickness in the range wherein the particle size of the nanoparticle Ag2O 50nm ~ 500nm, said layer Ag2S2O7 1 ~ 50 nm, the silver oxide Ag2S2O7 partially cured, wherein the molar ratio of sulfur to oxygen is 1: 4 to 4: 1. The present invention also discloses a preparation method and catalyst of the infrared light, experiments confirmed that the catalyst of the present invention has excellent catalytic performance infrared light, rapid degradation of organic pollutants, in 30 ~ 120mW / cm2 infrared light irradiation intensity, irradiation time is 90 ~ 150min infrared photocatalytic degradation condition methyl orange degradation rate of 90%, while in the sunlight, the catalyst has a structure Ag2S2O7 pHOTOREDUCTION avoid sunlight for ultraviolet Ag2O, the range of applications broader and easy to spread.