Cobalt-based heterogeneous catalysts for photocatalytic carbon dioxide reduction

Solar light-driven CO2reduction to high value-added chemicals has considered as an outstanding way to solve energy crisis and climate warming. Recently, various photocatalysts have been developed to achieve this reaction. Among them, cobaltbased heterogeneous catalysts have attracted great interest because of their promising performance, product selectivity and stability. Herein, we systematically summarize the research progress of various cobalt-based heterogeneous catalysts for the photoreduction of CO2, such as single-atom cobalt, and cobalt-based oxides, nitrides, sulfides, phosphides, metal–organic frameworks and covalent-organic frameworks. Meanwhile, the advantages and structure–activity relationship of these catalysts in photocatalytic CO2reduction reaction are discussed. Finally, the challenges and prospects for constructing cobaltbased heterogeneous catalysts with high efficiency are highlighted.