Recent Advances in CO2 Reduction Reaction to Value-added C1 Products by Single-atom Catalysts

The CO2 reduction reaction driven by sustainable electrical energy to value-added hydrocarbons is highly attractive because it can address both energy and environmental issues. The precise and rational development of corresponding electrocatalysts is of great importance to these kinds of reactions. Single-atom catalysts with unique electronic structures and coordination environments have become promising candidates, which may offer enhanced electrocatalytic performance. Herein, we summarize the recent development in the efficient fabrication of single-atom catalysts and their further application in CO2 reduction. The various strategies for SACs preparation and characterization methods are highlighted to give a comprehensive understanding of the relationship between metal active sites and catalytic ability. The reaction mechanisms of electronic CO2 reduction over single-atom catalysts are elaborated. Finally, the challenges and perspectives for the implementation of single-atom catalysts in CO2 reduction are discussed. [graphic not available: see fulltext]