CO_2的光电催化还原

Photoelectrocatalytic Reduction of CO_2

CO2为温室气体的主要成分,同时也是潜在的碳能源。本文主要介绍了近年来利用光催化、电催化以及光电催化3种不同催化方法还原CO2的研究现状。文章综述了催化剂材料和催化反应体系对CO2还原效果的影响。从催化效率,光、电转化效率,选择性和能耗等不同角度进行了比较和评价。细致地讨论分析了各种催化还原方法的反应机理,并对催化还原CO2研究的发展方向和应用前景进行了展望。

Carbon dioxide （CO2） is a main component part of greenhouse gases. Since catalytic reduction of CO2 to hydrocarbon fuels can realize the recyclable utilization of carbon materials, this topic has been intensively looked into. In this article, the recent progress on the conversion of CO2 has been reviewed and discussed in detail by comparing and analyzing the catalytic efficiency and catalytic selectivity of different methods, three of which, photocatalytic reduction, electrocatalytic reduction, and photoelectrocatalytic reduction are covered. The respective catalysis mechanisms of each method, as well as the effects of different catalysts and catalytic systems on reduction of CO2 have been described. According to previous studies in this area, catalytic performance, photo-electric converting, catalytic selectivity, and energy consumption are the primary criteria on evaluating the method of reduction of CO2. On this basis, the advantages and disadvantages of catalysts and methods for reducing CO2 to useable energy are summarized and analyzed. In the last part of the article, prospects and challenges for the further development in this field are presented.