Electrocatalytic reduction of CO2 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 CO2 reduction reaction (CO2RR). Here, we develop a facile strategy of graphitic carbon nitride nanosheets-immobilized single-atom Zn (ZnSA–CN–G) to control the mitigation of electrocatalytic CO2RR. 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 CO2RR, 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.

中文翻译：

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石墨氮化碳纳米片 - 固定单原子锌对 CO2 的高效电还原

电催化还原CO2为缓解空气污染和能源危机，非常需要转化为含碳化工产品。然而，设计高活性和稳定的 CO 电催化剂面临着巨大的挑战。2还原反应（CO2RR）。在这里，我们开发了一种简单的石墨氮化碳纳米片固定单原子 Zn (ZnSA-CN-G) 策略来控制电催化 CO 的缓解。2RR。合成后的 ZnSA-CN-G 纳米片不仅具有丰富的单原子 Zn 作为活性位点，而且具有独特的高表面积和高导电性结构。因此，ZnSA-CN-G 纳米片对 CO 表现出高电催化选择性2RR，包括 87.1% 的高法拉第效率值，用于在 [公式：参见文本]0.5[公式：参见文本]V 与 RHE 下产生 CO。此外，这种简单的方法可以进一步应用于合成各种其他单原子催化剂。