Abstract
AbstractThe employment of manganese complexes towards electrocatalytic water oxidation has gained immense interest among the scientific communities. In this present study, the reaction of Mn(CH3COO)2⋅4H2O with the novel ligand (2‐([2,2′:6′,2“‐terpyridin]‐4′‐yl)quinoline‐8‐ol) (8hq‐tpy) affords a dinuclear manganese complex, [MnII(8hq‐tpy)(H2O)]2(PF6)2 (Mn 1). Various spectroscopic techniques have been implemented for characterization purposes, and Mn 1 is employed as electrocatalysts towards water oxidation catalysis in the aqueous medium. Electrocatalytic responses in the aqueous medium at pH 6.0 lead to the electrodeposition of heterogeneous species (MnOX) which enables the oxidation event at an applied potential of 1.24 V vs. NHE with O2 liberation of 50.2 μmol/L. The XPS analysis performed after executing bulk electrolysis, provide evidence for the generation of MnIV=O as the active species formed by the catalyst precursor complex Mn 1, contributing to O2 evolution during the electrocatalytic water oxidation process.
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