Minireview and Perspectives of Bimetallic Metal–Organic Framework Electrocatalysts for Carbon Dioxide Reduction

Abstract

The electrocatalytic carbon dioxide reduction reaction (CO2RR) is an important energy strategy to address the carbon cycle, achieve carbon neutrality, and provide useful energy resources. As a tunable and multifunctional material, metal–organic frameworks (MOFs) have been extensively studied in the field of clean energy. Bimetallic MOFs exhibit specific synergistic effects in the presence of two different metal components, and their CO2RR performance is superior to that of the corresponding monometallic MOFs, especially for product selectivity. In this minireview, the recent progress of bimetallic MOFs as CO2RR electrocatalysts is reviewed. The main methods of catalyst synthesis are summarized. Then, from catalyst design considerations, the significance of organic ligands and metal components as well as MOF-derived materials is presented, respectively. To better understand the mechanism of bimetallic MOFs at the CO2RR, the advantages of two metal components are also mentioned. Finally, the main challenges, gaps, and perspectives of electrocatalytic CO2RR using bimetallic MOF materials are highlighted.