O2 reduction via proton-coupled electron transfer by a V(iii) aquo on a polyoxovanadate-alkoxide cluster†
Abstract
We report the transfer of H-atoms from a reduced polyoxovanadate alkoxide [nOct4N][V6O6(OH2)(OMe)12] via concerted proton–electron transfer. Oxygen reduction is compared between bridging and terminal O–H bonds revealing similar mechanisms, providing new insight to design criteria for metal-oxide electrocatalysts that faciliate oxygen reduction by concerted-proton electron transfer.