电催化还原CO_(2) Cu基催化剂研究进展

Research progress in copper-based catalysts forelectrocatalytic reduction of carbon dioxide

随着全球气候变化问题日益严重,电催化CO_(2)还原反应(ECO_(2)RR)作为一种将CO_(2)转化为高附加值燃料和化学品的方法受到了广泛关注。Cu作为一种ECO_(2)RR催化剂,能够高效催化CO_(2)电还原产生多种C+2产品,但是Cu催化剂在ECO_(2)RR中存在选择性差、稳定性差等问题。为了提高Cu催化剂的性能,通过杂原子修饰,缺陷构造,调控尺寸、形貌、晶面以及组成等策略对其进行了改性。对Cu基催化剂在ECO_(2)RR中的应用进行了综述,详细介绍了Cu基催化剂尺寸和形貌调控以及组成调控(如铜氧化物、双金属铜基催化剂、非金属掺杂)的设计策略,并分析了这些策略对Cu基电催化剂结构与性能的调控规律。

With the growing problem of global climate change,the electrocatalytic carbon dioxide reduction process(ECO_(2)RR)has attracted much attention as a method to convert CO_(2) into high value-added fuels and chemicals.Cu,as a catalyst for ECO_(2)RR,could efficiently catalyze the electroreduction of CO_(2) to produce a variety of C+2 products.However,copper catalysts suffer from poor selectivity and poor stability in ECO_(2)RR.In order to improve the performance of copper catalysts,the catalysts have been modified through strategies including heteroatom modification,defect construction,and modulation of size,morphology,crystal surface,and composition.In this work,the application of Cu-based catalysts in the ECO_(2)RR is reviewed,and the design strategies for Cu-based catalyst including size and morphology modulation,as well as compositional regulation(e.g.,Cu oxide,bimetallic Cu-based catalysts,and nonmetallic doping)are described in detail,and the modulation patterns of these strategies on the structure and performance of Cu-based electrocatalysts are analyzed.