Journal Article photocatalysis Review CdS hydrogen evolution CO2 reduction S‐scheme heterojunction artificial photosynthetic system charge transfer cocatalysts hydrogen evolution reaction photocatalyst photocatalysts 2D 2D carbon materials COF Co3Se4 EPR H2 evolution H2O2 N-doped mesoporous hollow carbon spheres Photosystem I Protein Complex Photosystem II Protein Complex Pt single atoms Published Erratum Research Support, Non-U.S. Gov't S-scheme heterojunction S-scheme heterojunctions TiO2 Z-scheme