摘要
随着全球气候变化问题日益严重,电催化CO2还原反应(ECO2RR)作为一种将CO2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ECO2RR催化剂,能够高效催化CO2电还原产生多种C2+产品,但是Cu催化剂在ECO2RR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ECO2RR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.
Abstract
With the growing problem of global climate change,the electrocatalytic carbon dioxide reduction process(ECO2RR)has attracted much attention as a method to convert CO2 into high value-added fuels and chemicals.Cu,as a catalyst for ECO2RR,could efficiently catalyze the electroreduction of CO2 to produce a variety of C2+products.However,copper catalysts suffer from poor selectivity and poor stability in ECO2RR.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 ECO2RR 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.
基金项目
甘肃省青年科技基金项目(22JR5RA305)
甘肃省中央引导地方科技发展基金项目(22ZY1QA008)
万方数据