Towards Sustainable H2O2 Photogeneration: Advancements, Challenges, and Future Prospects

Abstract Hydrogen peroxide (H 2 O 2 ) has emerged as a versatile and environmentally friendly oxidant, showing wide applications in diverse sectors such as fine chemical synthesis, waste stream treatment, precious metal extraction, and textile bleaching. With an escalating demand, H 2 O 2 has now become one of the most essential chemicals worldwide. Efficient photocatalytic generation of H 2 O 2 from water (H 2 O) and oxygen (O 2 ) has been a long‐standing challenge, presenting a promising prospect to replace existing production methods. This review presents a framework aimed at achieving highly efficient and continuous H 2 O 2 production via photocatalysis. The key aspects include photocatalyst design, selectivity for redox reactions, stability issue and reactor design. Through a comprehensive inspection and comparison of state‐of‐the‐art research, the most viable pathways for H 2 O 2 photogeneration are identified, ensuring optimal solar‐to‐fuel conversion efficiency and high selectivity for target products. The ultimate goal is to establish H 2 O 2 photogeneration as a sustainable and efficient method for producing this valuable chemical, contributing to a greener and more sustainable future.