Cobalt-based heterogeneous catalysts for photocatalytic carbon dioxide reduction

Solar light-driven CO2 reduction 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, cobalt-based 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 CO2 reduction reaction are discussed. Finally, the challenges and prospects for constructing cobalt-based heterogeneous catalysts with high efficiency are highlighted.