Spectral Sensitization of the Heterogeneous Photocatalytic Oxidation of Hydroquinone in Aqueous Solutions at Phthalocyanine-Coated TiO2 Powders.

摘要

The photocatalyzed reaction of hydroquinone with oxygen at TiO2 (anatase) powders coated with metal-free or magnesium phthalocyanine under irradiation with light of energy less than the TiO2 band gap is described. The behavior at the powders is correlated with current-potential curves at single crystal n-type TiO2 electrode and an energy level scheme for the reaction is proposed. (Author)