Rapid synthesis of Ag-based metal-organic framework at room temperature for efficient electrocatalytic CO₂ reduction

An Ag-based metal-organic framework (Ag-MOF) material was successfully synthesized and used for the first time in the electrocatalytic CO2 reduction reaction (CO2RR) by selecting 1,2,4-triazole as the ligand with strong electron-donating ability. The crystal structure, morphology, and electrocatalytic CO2RR performance of Ag-MOF were systematically investigated using characterization methods such as powder X-ray diffraction, transmission electron microscopy, scanning electron microscopy, and chronoamperometry. Compared to commercial Ag nanoparticles, Ag-MOF exhibits superior electrocatalytic CO2RR performance, better stability, and higher catalytic activity. At -0.9 V (vs RHE), the Faraday efficiency of CO achieved 96.1%. When the potential decreased to -1.1 V (vs RHE), the current density could reach 17 mA center dot cm(-2) and the electrode could operate stably for 300 min. It is shown that the chemical environment surrounding the catalytic site can be altered by selecting the appropriate ligand, resulting in the efficient conversion of CO2 to the target product.