On-Demand Synthesis of H2O2by Water Oxidation for Sustainable Resource Production and Organic Pollutant Degradation

H(2)O(2)is a versatile and environmentally friendly chemical involved in water treatment, such as advanced oxidation processes. Anthraquinone oxidation is widely used for large-scale production of H2O2, which requires significant energy input and periodic replacement of the carrier molecule. H(2)O(2)production should be customized considering the specific usage scenario. Electrochemical synthesis of H(2)O(2)can be adopted as alternatives to traditional method, which avoids concentration, transportation, and storage processes. Herein, we identified Bi2WO6:Mo as a low-cost and high-selectivity choice from a series of Bi-based oxides for H(2)O(2)generation via two-electron water oxidation reaction. It can continuously provide H(2)O(2)for in situ degradation of persistent pollutants in aqueous solution. Clean energy from H(2)can also be produced at the cathode. This kind of water splitting producing sustainable resources of H(2)O(2)and H(2)is an advance in environmental treatment and energy science.