“…Typically, the photocatalytic CO 2 reduction process mainly includes light harvesting, the separation/transfer of photogenerated electron carrier, and the adsorbed/activated CO 2 molecules . As a central part of MOF/g-C 3 N 4 composites, MOFs are easier to achieve a precise regulation of target characteristics. , The reactive sites of photocatalysts can be constructed by selecting preset organic linkers or metal cations/clusters , to achieve the purpose of adsorption and activation of CO 2 molecules via stabilizing the reaction intermediates and reducing the energy barrier. In addition, highly conjugated organic linkers like pyrene, anthracene, perylene, and porphyrin can also be conducive to the intramolecular charge-transfer process. , The introduction of functional groups (−NH 2 , −OH, etc.)…”