WATER-PURIFICATION BY SEMICONDUCTOR PHOTOCATALYSIS

The basic principles of the photooxidative mineralization of organic p ollutants by O2, sensitized by TiO2, are described. The kinetics of th is process as a function of [TiO2], [organic pollutant], [O2], light i ntensity, temperature, pH, and the type of anion present are discussed , and a general kinetic model is presented. Standard test and demonstr ation systems for water purification by TiO2 photocatalysis are descri bed and other novel applications of semiconductor photocatalysis are o utlined.