Photocatalysis CO2 reduction reaction to C2+products catalyst and conversion fundamental mechanisms:A review
Traditional industrial processes,especially those that rely on fossil fuels such as coal,oil and gas,result in high levels of CO2 emissions.Capturing and utilizing CO2 from industrial flue gas has become a top priority for reducing pollution emissions in key industries.In recent years,remarkable process in eliminating pollution and reducing CO2 have been made.Photocatalytic CO2 reduction tech-nology has been widely used due to the advantages of direct use of clean solar energy resource and the moderate room temperature reaction condition.Over the past few decades,a wide variety of photocata-lysts which have excellent performance have been developed.However,there is a notable research defi-ciency on improving the selectivity of high-value C2+products.In view of the research trends and the application of new technologies,this paper describes multiple technical routes and their comparative analysis of CO,utilization firstly.Then we illustrates the thermodynamic limitations,kinetic characteris-tics,the basic principle and mechanism of C—C coupling,the current technologies that can enhance the C2+selectivity,and their existing shortcomings.Finally,we present the research process,point out the ex-isting problems,and provide guidance for the future prospects and industrial applications of this field.
Flue gas treatmentPhotocatalysisCO2 reductionC—C couplingC2+productsResource utilization
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