Graphitic Carbon Nitride Nanosheets-Immobilized Single-Atom Zn Towards Efficient Electroreduction of CO2

Electrocatalytic reduction of CO 2 into carbon-containing chemical product is greatly desired for mitigating the air pollution and energy crisis. However, there is great challenge to design highly active and stable electrocatalyst for the CO 2 reduction reaction (CO 2 RR). Here, we develop a facile strategy of graphitic carbon nitride nanosheets-immobilized single-atom Zn (ZnSA–CN–G) to control the mitigation of electrocatalytic CO 2 RR. The as-synthesized ZnSA–CN–G nanosheets not only possess abundant single-atom Zn as active sites, but also show unique architectures with high surface area and high electrical conductivity. Consequently, the ZnSA–CN–G nanosheets exhibit high electrocatalytic selectivity for CO 2 RR, including a high Faradaic efficiency value of 87.1% for the production of CO at [Formula: see text]0.5[Formula: see text]V versus RHE. Moreover, such simple approach can be further applied to synthesize a variety of other single-atom catalysts.