Solar-light-driven photocatalytic production of peroxydisulfate over noble-metal loaded WO3†
Abstract
The high-value-added chemical reagent peroxydisulfate (S2O82−) was produced photocatalytically over noble-metal loaded WO3 powder suspensions in aqueous H2SO4 under flowing O2 and simulated solar light irradiation. Pt cocatalyst showed the highest photocatalytic activity for S2O82− formation of the studied metals (Au, Pd, Rh, and Ru). Further study indicated that continuous accumulation of S2O82− was achieved only over the Pt/WO3 photocatalyst.