Electrocatalytic H₂ evolution using binuclear cobalt complexes as catalysts.

ABSTRACT: We report herein on the use of two binuclear cobalt complexes with the N,N'-bis(salicylidene)-phenylmethanediamine ligand as catalysts for the H₂ evolution in DMF solution with acetic acid as proton source. Both experimental analyses (electrochemical analysis, spectroscopy analysis) and theoretical analysis (foot-of-the wave analysis) were employed. These catalysts required an overpotential of ca. 470 mV to catalyze the H₂ evolution and generated H₂ gas with a faradaic efficiency of 85-95% as calculated on the basis of after 5 hour bulk electrolysis. The kinetic investigation showed the maximal TOF value of 50 s^-1 on the basis of an ECEC mechanism. Two cobalt centers, standing at a long distance of 4.175 Å, operated independe

SUBMITTER: To TH 

PROVIDER: S-EPMC9479770 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature