Surface-immobilized single-site iridium complexes for electrocatalytic water splitting

Abstract

Water into oxygen: Mono-iridium complexes (see picture; L=PO 3H2 or COOH) were immobilized on an indium tin oxide (ITO) surface to form a molecular electrocatalytic water oxidation assembly that mimics photosystem II in producing molecular oxygen with high turnover numbers (TONs). The catalyst shows TONs for O2 higher than 210 000 and turnover frequencies higher than 6.7 s-1 during electrochemical catalytic water splitting. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.