What Vibrational Spectroscopy Tells about Water Structure at the Electrified Palladium-Water Interface

dc.contributor.authorZhang, Y.J.
dc.contributor.authorSu, Z.F.
dc.contributor.authorLi, J.F.
dc.contributor.authorLipkowski, J.
dc.date.accessioned2022-01-24T21:25:05Z
dc.date.available2022-01-24T21:25:05Z
dc.date.createdMay-20
dc.degree.departmentElectrochemical Technology Centreen
dc.degree.departmentDepartment of Chemistryen
dc.descriptionThis document is the Accepted Manuscript version of a Published Work that appeared in final form in Journal of Physical Chemistry C, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.jpcc.0c03453.en_US
dc.description.abstractThe knowledge of the structure and properties of water adsorbed on metal surfaces is relevant for understanding electrocatalytic reactions. A monolayer of Pd deposited at a gold electrode surface is known to have enhanced electrocatalytic properties. To shed new light on these properties, the present study describes investigations of water structure at monolayer Pd film deposited at a nanostructured gold electrode consisting of ∼50 nm large nanoparticles supported at a Si hemisphere. Attenuated total reflection surface enhanced infrared reflection absorption spectroscopy (ATR-SEIRAS) was applied to measure vibrational spectra of water molecules at the electrode surface. The surface enhancement of the electric field of the photon allowed one to determine spectra of water molecules interacting with the Pd film. The results show that surface water is a mosaic of “ice-like”, “liquid-like”, and monomer or small clusters of water molecules. In addition, hydronium ions are present at the Pd surface in an acidic solution. The relative contribution of these structures depends on the pH and electrode potential. The surface water is more ordered at potentials corresponding to the adsorption of hydrogen atoms.en_US
dc.description.sponsorshipNatural Sciences and Engineering Research Council of Canada (NSERC), National Natural Science Foundation of China (NSFC), "111" Project, National Key Research and Development Program of Chinaen_US
dc.identifier.urihttps://hdl.handle.net/10214/26737
dc.language.isoenen_US
dc.publisherACS Publicationsen_US
dc.rights.licenseAll items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated.
dc.subjectATR-SEIRASen_US
dc.subjectWater structureen_US
dc.subjectPalladiumen_US
dc.titleWhat Vibrational Spectroscopy Tells about Water Structure at the Electrified Palladium-Water Interfaceen_US
dc.typeArticleen_US
dcterms.relationYue-Jiao Zhang, Zhang-Fei Sub, Jian-Feng Lia, Jacek Lipkowskib,What Vibrational Spectroscopy Tells about Water Structure at the Electrified Palladium-Water Interface, J.Phys.Chem.C , 2020,124, 13240-13248. https://doi.org/10.1021/acs.jpcc.0c03453.en_US

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