title: PtIr-WO3nanostructured alloy for electrocatalytic oxidation of ethylene glycol and ethanol.
abstract: In this article, we characterized tungsten oxide-decorated carbon-supported PtIr nanoparticles and tested it for the electrooxidation reactions of ethylene glycol and ethanol. Phase and morphological evaluation of the proposed electrocatalytic materials are investigated employing various characterization techniques including X-ray diffraction (XRD) and transmission electron microscopy (TEM). Electrochemical diagnostic measurements such as cyclic voltammetry, chronoamperometry, and linear sweep voltammetry revealed that the tungsten oxide-modified PtIr/Vulcan nanoparticles have higher catalytic activity for ethylene glycol and ethanol electrooxidation than that of PtIr/Vulcan. A significant enhancement for electrooxidation of CO-adsorbate monolayers occurred in the presence of a transition metal oxide relative to that of pure PtIr/Vulcan electrocatalyst. The likely reasons for this are modification on the Pt center electronic structure and/or increasing the population of reactive oxo groups at the PtIr/Vulcan electrocatalytic interface in different potential regions.
authors.affiliation: Department of Chemistry, University of Warsaw, Pasteura 1, PL-02-093 Warsaw, Poland.
authors.forename: Magdalena
authors.initials: M
authors.lastname: Murawska
authors.affiliation: Department of Chemistry and Biochemistry, Miami University, Oxford, OH 45056 USA.
authors.forename: James A
authors.initials: JA
authors.lastname: Cox
authors.affiliation: Department of Chemistry, University of Warsaw, Pasteura 1, PL-02-093 Warsaw, Poland.
authors.forename: Krzysztof
authors.initials: K
authors.lastname: Miecznikowski
keywords: Electrocatalysis; Ethanol oxidation; Ethylene glycol electrooxidation; PtIr nanoparticles; Tungsten oxide