Factors influencing the photocatalytic efficiency of WO3 particles

Abstract

WO3 particles were doped with the transition metal ions TiIII, VIV, CrIII, MnII, FeIII, CoII, NiII, CuII, ZnII, RuIII and V2O5 to increase the visible light absorption. The photocatalytic efficiencies of these doped samples were investigated by carrying out the decomposition of peroxomonosulphate (PMS, HSO5-) over the doped and undoped WO3 particles. PMS is capable of reacting with both the photogenerated holes and electrons. The effect of initial concentrations of PMS, amount of catalyst, pH, dopants and percentage doping on the photocatalytic efficiency of WO3 are investigated and are discussed. © 1989.