Recent Advances on Single-Atom Catalysts for Photocatalytic CO 2 Reduction.

The present energy crisis and environmental challenges may be efficiently resolved by converting carbon dioxide (CO 2 ) into various useful carbon products. The development of more effective catalysts has been the main focus of current research on photocatalytic CO 2 reduction. Due to their high atomic efficiency and superior catalytic activity, single-atom catalysts (SACs) have attracted considerable interest in catalytic CO 2 conversion. This review discusses the current research developments, obstacles, and potential of SACs for photocatalytic CO 2 reduction. And further, discusses the principle of photocatalytic carbon dioxide reduction. This work has compared and analyzed the effects of support materials and active site types in SACs on photocatalytic CO 2 reduction performance. This work believes that by sharing these developments, some inspiration for the rational design and development of stable and effective photocatalytic CO 2 reduction catalysts based on SACs can be provided.