Water oxidation {is the|will be the|may be the|would be the|could be the|is definitely the} step limiting the efficiency of electrocatalytic hydrogen production from water. Spectroelectro-chemical analyzes are employed {to make|to create|to produce} a direct comparison of water oxidation reaction kinetics {between|in between|among|amongst|involving} a molecu-lar catalyst, the dimeric iridium catalyst [Ir2(pyalc){2|two}(H2O)4-(µ-O)]2+ (IrMolecular, pyalc = 2-(2’pyridinyl)-2-propanolate) immobilized on a mesoporous indium tin oxide (ITO) substrate, with that of an heterogenous electrocatalyst, an amorphous hydrous iridium (IrOx) film. For {both|each} systems, {four|4} analogous redox states {were|had been|have been} detected, {with the|using the|with all the|together with the} for-mation of Ir(4+)-Ir(5+) {being|becoming|getting} the potential-determining step in {both|each} {cases|instances|circumstances|situations}. {However|Nevertheless|Nonetheless|Even so|On the other hand|Having said that}, the two systems exhibit distinct water oxidation reaction kinetics, with potential-independent first-order kinetics for IrMolecular contrasting with poten-tial-dependent kinetics for IrOx. {This is|This really is|This can be|That is} attributed to water oxidation {on the|around the} heterogenous catalyst requiring co-operative effects {between|in between|among|amongst|involving} neighboring oxidized Ir centers. The {ability|capability|capacity|potential} of IrMolecular to drive water oxidation {without|with out|without having|with no|devoid of|without the need of} such co-operative effects is explained by the {specific|particular|certain|distinct|precise} coordination {environment|atmosphere} {around|about} its Ir centers. These distinc-tions {between|in between|among|amongst|involving} molecular and heterogenous reaction kinetics are shown to {explain|clarify} the {differences|variations} observed in their water oxidation electrocatalytic {performance|overall performance|efficiency|functionality} {under|below|beneath} {different|various|distinct|diverse|unique|distinctive} {potential|possible|prospective} {conditions|circumstances|situations}. 1247542-90-0 web Formula of 3-Bromo-5-methylpyrazin-2(1H)-one PMID:26644518
Headquartered in New Jersey, USA, ChemScence is a global leading manufacturer and supplier of building blocks and fine research chemicals. We now have branches in Sweden and India. Our mission is to pave the way for drug discovery by providing the most innovative chemicals with the highest-level quality for a reasonable price.
Our Catalog Products
We deliver an extensive portfolio of products, including Building Blocks,Catalysts&Ligands,Synthetic Reagents,Material Science and ADC Linkers&Protac,.ChemScene now have over 600000 Building Blocks & Intermediates in our catalog and more than 70000 of them are in stock.
For details, please refer to the ChemScene website:https://www.chemscene.com