The product is a white powder-like object, under the influence of the visible or ultraviolet light having a strong ability to oxidation and reduction, chemical properties of stability, and can make formaldehyde, toluene, xylene, ammonia, TVOC and other harmful organics completely decompose into harmless CO2 and H2O, and have the specialties such as removal of pollutants, hydrophilic, and self-cleaning properties with lasting performance and no secondary pollution. It is applicable to produce all kinds of photocatalyst spray, nano-antibacterial coatings, sewage treatment and other products.