CO2 is an economical, nontoxic, renewable and abundant car-bon source. The chemical utilization of CO2 into value-addedproducts is very attractive because it can not only alleviatethe global warming caused by increasing atmospheric CO2concentration, but also offer a solution to replace dwindlingfossil fuels [ 1 ]. Thus, much attention has been paid to theCO2 conversion to various C1 feedstock (e.g., CH4, CH3OH,CO, HCOOH). However, due to the extreme inertness of CO2and a high C-C coupling barrier.
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