Ce-doped Bi based catalysts for highly efficient electroreduction of CO2 to formate

Abstract

A Ce–Bi@CeBiO_x/C with core–shell structure has been synthesized by pyrolysis of cerium doped bismuth-based metal–organic frameworks. This novel catalyst exhibits excellent performance for electrochemical CO₂ reduction to formate with a maximum faradaic efficiency of 96% and a maximum partial current density of 15.2 mA cm⁻², which could be attributed to the synergistic effects of electronic structure modification of Bi as well as the enrichment of oxygen vacancies on catalyst surfaces.