本文从历史角度综述了二氧化碳在铜基催化剂上的还原机理的最新研究进展,对区分C1和C2产物路径发生的机制,以及调控二氧化碳还原产物选择性的影响因素和方法进行了重点阐述,着重讨论了如何利用电化学红外光谱与微分电化学质谱等技术在揭示反应机理方面的研究思路与方法学.

In this review, we present the major developments in the understanding of the mechanisms of the electrochemical reduction of CO₂ from a historical perspective. Most of the work discussed in this review was carried out at copper electrodes, as this is the only material at which hydrocarbons are produced in reasonable quantities. The emphasis focuses on the differentiation of mechanisms for the generation of C1 and C2 products as well as factors and methods for controlling the product selectivity of CO₂ reduction. We have highlighted ambiguities, assumptions, and important methodologies, such as differential electrochemical mass spectrometry and electrochemical in-situ infrared spectroscopy, which help greatly to clarify these issues in the literature.