Metal-organic framework composites for electrochemical CO2 reduction reaction

Carbon dioxide (CO2) levels in the atmosphere are quickly increasing as a consequence of anthropogenic activities, which present grave hazards and dangerous circumstances to not only humanity but also theecosystem. Currently, electrochemical CO2 conversion to chemical/fuels remains one of the best methods for minimizing CO2 concentrations. Metal-organic frameworks (MOFs) composite materials have been considered as new class of highly-performed electrocatalysts for CO2 reduction reaction (CO2RR) due to theirwide surface area,higherporosity, chemical tunability andexcellentstability. This article presents major approaches for electrochemical CO2RR to value-added product. These were followed bydiscussing therecent advancements in MOF composite electrocatalysts forCO2RRincluding active sites MOF-supported electrocatalysts, metal-nanoparticles-supported MOFs, conductive supported MOFs composites, and polyoxometalate-based MOF composites. Lastly, somechallenges currently facing MOF composites for CO2RR as well as anticipated future advances were discussed. Research hotspot lies in the creation of highly effective CO2RR electrocatalyst such as ligand engineering in MOFs. It is believed that the currentstudy willcontribute to accelerating the fabrication ofefficient MOF compositematerials for abating theCO2 emission in the ecosystemand to highlight the necessity for further research to address significant environmental sustainability concerns.