A Step toward the Wet Surface Chemistry of Glycine and Alanine on Cu{110}: Destabilization and Decomposition in the Presence of Near-Ambient Water Vapor

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dc.authorid0000-0002-8973-6561
dc.authorid0000-0003-0726-4183
dc.contributor.authorShavorskiy, Andrey
dc.contributor.authorAksoy, Funda
dc.contributor.authorGrass, Michael E.
dc.contributor.authorLiu, Zhi
dc.contributor.authorBluhm, Hendrik
dc.contributor.authorHeld, Georg
dc.date.accessioned2019-08-01T13:38:39Z
dc.date.available2019-08-01T13:38:39Z
dc.date.issued2011
dc.departmentNiğde ÖHÜ
dc.description.abstractThe coadsorption of water with organic molecules under near-ambient pressure and temperature conditions opens up new reaction pathways on model catalyst surfaces that are not accessible in conventional ultrahigh-vacuum surface-science experiments. The surface chemistry of glycine and alanine at the water-exposed Cu{110} interface was studied in situ using ambient-pressure photoemission and X-ray absorption spectroscopy techniques. At water pressures above 10(-5) Torr a significant pressure-dependent decrease in the temperature for dissociative desorption was observed for both amino acids, accompanied by the appearance of a new CN intermediate, which is not observed for lower pressures. The most likely reaction mechanisms involve dehydrogenation induced by O and/or OH surface species resulting from the dissociative adsorption of water. The linear relationship between the inverse decomposition temperature and the logarithm of water pressure enables determination of the activation energy for the surface reaction, between 213 and 232 kJ/mol, and a prediction of the decomposition temperature at the solid-liquid interface by extrapolating toward the equilibrium vapor pressure. Such experiments near the equilibrium vapor pressure provide important information about elementary surface processes at the solid-liquid interface, which can be retrieved neither under ultrahigh vacuum conditions nor from interfaces immersed in a solution.
dc.description.sponsorshipEuropean Community through the Marie Curie Early Stage Training Network "MONET" [MEST-CT-2005-020908]; EPSRC [EP/H015493/1]; Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy [DE-AC02-05CH11231]; Engineering and Physical Sciences Research Council [EP/H015493/1]
dc.description.sponsorshipThis work was supported by the European Community through the Marie Curie Early Stage Training Network "MONET" (MEST-CT-2005-020908) and by the EPSRC through an overseas travel grant (No. EP/H015493/1). The Advanced Light Source is supported by the Director, Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231.
dc.identifier.doi10.1021/ja110910y
dc.identifier.endpage6667
dc.identifier.issn0002-7863
dc.identifier.issue17
dc.identifier.pmid21473591
dc.identifier.scopus2-s2.0-79955401594
dc.identifier.scopusqualityQ1
dc.identifier.startpage6659
dc.identifier.urihttps://dx.doi.org/10.1021/ja110910y
dc.identifier.urihttps://hdl.handle.net/11480/4727
dc.identifier.volume133
dc.identifier.wosWOS:000290363400033
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.institutionauthor[0-Belirlenecek]
dc.language.isoen
dc.publisherAMER CHEMICAL SOC
dc.relation.ispartofJOURNAL OF THE AMERICAN CHEMICAL SOCIETY
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.titleA Step toward the Wet Surface Chemistry of Glycine and Alanine on Cu{110}: Destabilization and Decomposition in the Presence of Near-Ambient Water Vapor
dc.typeArticle

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