Titanium Dioxide Photocatalysis

Abstract

Organic toxic contamination is a serious world-wide environment problem. The use of titanium dioxide (TiO2) for the photocatalytic destruction of organic compounds is a way for water treatment. TiO2 is widely used as photocatalyst, being wide band-gap energy about 3.2 eV. The photocatalytic efficiency of rutile and anatase TiO2 showed high effectively to remove organic matter. It demonstrated that the effect of their phase compositions could reduce the charge carrier recombination which limits photonic efficiency where a high surface absorption increased. Moreover, TiO2 doped with alkaline earth substances could potentially be used in destruction of organic toxic compounds due to its defect structure was increased which proportionation to the active site for hydroxyl radical formation.