The Influence of the Ligand in the Iridium Mediated Electrocatalyic Water Oxidation.

ABSTRACT: Electrochemical water oxidation is the bottleneck of electrolyzers as even the best catalysts, iridium and ruthenium oxides, have to operate at significant overpotentials. Previously, the position of a hydroxyl on a series of hydroxylpicolinate ligands was found to significantly influence the activity of molecular iridium catalysts in sacrificial oxidant driven water oxidation. In this study, these catalysts were tested under electrochemical conditions and benchmarked to several other known molecular iridium catalysts under the exact same conditions. This allowed us to compare these catalysts directly and observe whether structure-activity relationships would prevail under electrochemical conditions. Using both electrochemical quartz crystal microbalance experiments and X-ray photoelectron

SUBMITTER: van Dijk B 

PROVIDER: S-EPMC7137537 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature