A DFT investigation on the electrochemical reduction of CO2 to CO over dual precious metal atoms decorated graphene

The CO2 electrochemical reduction to CO on dual precious metal atoms M2 (M2 = Pt2, Pd2, and Pt1Pd1) decorated graphene (M2/G) is investigated by using density functional theory with van der Waals corrections. The electronic structure analyses show that the dual precious metal atoms anchored graphene are able to activate CO2 thanks to the charge transfer from metal atoms to the antibonding π* orbital of CO2.