Conversing CO 2 into value-added chemicals endows electrochemical CO 2 reduction reaction (CO 2 RR) with the potential to tackle over issues induced by the increased CO 2 level in the atmosphere. The associated technological viability of this process is highly dependent on exploring efficient electrocatalysts. In this work, we successfully synthesized nitrogen and sulfur co-doped carbon nanosheets (NS-CNSs), which are comprehensively characterized by a variety of characterization techniques. When used as the catalyst for CO 2 RR, the NS-CNSs exhibit remarkably high catalytic activity and selectivity with a Faradaic efficiency of~85.4 % for CO production and long-term durability. The superior performance of this material majorly originates from the unique nanosheets structure with large porosity and the co-doped S and N in the nanosheets, which exposed larger electrochemical activity surface areas and more active sites for promoting CO 2 reduction.
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