过渡金属单原子电催化剂还原CO_(2)制CO

Transition Metal Single-Atom Electrocatalysts for CO_(2) Reduction to CO

电催化二氧化碳还原(ECR)技术是实现“碳中和”目标的一种理想途径,而过渡金属单原子催化剂具有电子结构可调、原子利用率高和活性位点均一等特点,在ECR研究中具有显著优势。本文首先介绍了单原子电催化剂在还原CO_(2)尤其是在选择性生成CO研究中的优势,然后综述了近年来Fe、Co、Ni及其他单原子电催化剂的反应位点调控策略与电催化选择性的调控机制,重点对质子耦合CO_(2)还原生成CO的中间过程调控进行了归纳总结,并简要展望了发展方向,以期为推动单原子催化剂在ECR中规模化应用提供指导和参考。

Electrocatalytic carbon dioxide reduction(ECR)technology offers a potential strategy to achieve the goal of“carbon neutralization”.Transition metal single-atom catalysts have attracted much attention in ECR due to their adjustable electronic structure,high atom utilization and uniform active sites.This review firstly introduces the advantages of transition metal single-atom catalysts in CO_(2) reduction,especially in selective CO production.Then,the recent progress on controlling the active sites as well as the catalysis selectivity over Fe,Co,Ni and other single-atom electrocatalysts are reviewed,with special emphasis on the intermediate process control of proton coupled CO_(2) reduction to CO reaction path.Finally,the development direction of transition metal single-atom catalysts in ECR is briefly prospected to provide guidance and reference for promoting their large-scale application.