This critical volume examines the different methods used for the synthesis of a great number of phoatalysts, including TiO2, ZnO and other modified semiconductors, as well as characterization techniques used for determining the optical, structural and morphological properties of the semiconducting materials. Additionally, the authors discuss photoelectrochemical methods for determining the light activity of the phoatalytic semiconductors by means of measurement of properties such as band gap energy, flat band potential and kinetics of hole and electron transfer. Phoatalytic Semiconductors: Synthesis, Characterization and Environmental Applications provide an overview of the semiconductor materials from first- to third-generation phoatalysts and their applications in wastewater treatment and water disinfection. The book further presents economic and toxicological aspects in the production and application of phoatalytic materials.