Application of S ‐Scheme Heterojunction Photocatalyst

S-scheme heterojunction, a new concept in photocatalysis, has been widely used to guide the design of efficient photocatalysts. It strives to retain the maximum redox power in a photocatalytic system by consuming useless photogenerated electrons and holes through a built-in electric field at a heterojunction interface. Benefiting from the strong redox ability and efficient charge carrier separation, S-scheme heterojunction has attracted extensive attention in various photocatalytic fields, including hydrogen evolution, carbon dioxide reduction, pollutant degradation, hydrogen peroxide production, disinfection and sterilization, and organic synthesis. This chapter mainly introduces the application of S-scheme heterojunction in photocatalysis to deepen readers' understanding of S-scheme heterojunction and promote the development of the S-scheme photocatalyst.