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light catalyst is nano-level powder made with nm-TiO2(A) as the main ingredient and doped with some metal or metal oxide. Under the light with the wave length of less than 400μm, the valance band electrons are activated to the conduction band to generant elecrtons and holes. The elecrtons and holes acts with O2 and H2O attached on the surface to generate superoxide negative ion free radical, O2 and hydroxyl radical, free radical OH. It's free radicals have a strong oxidizing and decomposing ability, and can damage C-C china, C-N key, C-N key, O-H key, and N-H key of organic substance and kill bacteria and may be widely applied for air purification and sewage disposal, this product has the functions of photocatalyzing and decomposing harmful gases, organic pollutant and photocatalyzing anti-bacteria this product features low cost, good stability, high photocatalytic activity and absorbing light in a wide range of wave lengths.
Applications and Usages
ainly used in self-cleaning glasses, antibacterial matderials, air purification, polluted water treatment, chenical industry and other fields.