摘要：Engineering the electronic properties of catalysts to target intermediate adsorption energy as well as harvest high selectivity represents a promising strategy to design advanced electrocatalysts for efficient CO_(2) ***,a synergistical tuning on the electronic structure of the Cd se nanorods is proposed for boosting electrochemical reduction of CO_(2) .The synergy of Ag doping coupled with se vacancies tuned the electronic structure of the Cdse nanorods,which shows the metalloid characterization and thereby the accelerated electron transfer of CO_(2) *** synchrotron radiation Fourier transform infrared spectroscopy and theoretical simulation revealed that the Ag doping and se vacancies accelerated the CO_(2) activation process and lowered the energy barrier for the conversion from CO_(2) to;COOH;as a result,the performance of CO_(2) electroreduction was *** as-obtained metalloid Ag-doped Cdse nanorods exhibited a 2.7-fold increment in current density and 1.9-fold Faradaic efficiency of CO compared with the pristine Cdse nanorod.