4.8 Article

Resolving Deactivation Pathways of Co Porphyrin-Based Electrocatalysts for CO2 Reduction in Aqueous Medium

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Summary: In this study, the axial coordination of drop-casting solvent to CoTPP and the porphyrin structure were found to have significant effects on the catalytic performance of the CO2 ERR reaction. Pyridine demonstrated a stronger coordination bond to CoTPP compared to DMF and THE, resulting in the highest efficiency among the tested solvents. However, introducing -COOMe substituents in CoTPP weakened the coordination bond, leading to a detrimental effect on CO2 ERR. Manipulating the coordination environment around the metal center of the immobilized catalyst is crucial in designing an efficient electrocatalytic system.

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