Rapid production of 38 mM H 2 O 2 in an alcoholic suspension of a WO 3 photocatalyst under visible light.

Specific approaches to H 2 O 2 production over a WO 3 photocatalyst under visible light irradiation, i.e. , (1) no use of a cocatalyst, (2) reaction under an O 2 atmosphere, (3) reaction in a high concentration of alcohol, and (4) reaction at 60 °C, were found to be effective for rapid production of 38 mM H 2 O 2 .