Oxidative Degradation of Organic Pollutants by Hydrogen Peroxide in the Presence of FePz(dtnCl2)4 under Visible Irradiation

A novel photocatalyst of iron(II)-tetra(5,6-dichloro-1,4-dithin)porphyrazine (abbreviated as FePz(dtnCl 2 ) 4 ) has been found to exhibit high catalytic activity to activate hydrogen peroxide for oxidative degradation of organic pollutants under visible light irradiation (A > 420 nm) and wide pH range, in which Rhodamine B(RhB) and 4-nitro benzoic acid (NBA) were efficiently degraded and mineralized, while degraded residues and active oxygen species were also identified.