On‐Demand Synthesis of H 2 O 2 by 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 H 2 O 2 , 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 Bi 2 WO 6 :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.