电催化还原CO_(2)制单碳产物反应机理及催化剂研究进展

Research progress on reaction mechanism and catalysts of electrocatalytic reduction of CO_(2) to single-carbon compounds

电催化还原CO_(2)因其温和的操作条件、可控的反应工艺和反应速率以及较高的转化率而广受关注。介绍了电催化还原CO_(2)制单碳产物的反应机理,综述了新型电催化还原催化剂的研究进展。指出有望通过金属修饰、氮掺杂、纳米结构调控、多相催化体系构建等方法解决目前电催化还原CO_(2)过程中存在的过电势较高、选择性和转化率较低等问题,从而实现高效CO_(2)电催化还原。

Electrocatalytic reduction of CO_(2)has attracted much attention because of its mild operating conditions, controllable reaction process and reaction rate and high conversion efficiency. The reaction mechanism of electrocatalytic reduction of CO_(2)to produce single-carbon compounds was introduced, and the research progress of new electrocatalytic reduction catalysts was reviewed. It is expected to solve the problems of high overpotential, low selectivity and low conversion in the current process of CO_(2)electrocatalytic reduction by means of metal modification, nitrogen doping, nanostructure regulation and construction of heterogeneous catalytic system, so as to realize high efficiency CO_(2)electrocatalytic conversion.