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dc.contributor.authorHesse, E.
dc.contributor.authorCreighton, J.A.
dc.date.accessioned2009-12-09T12:00:04Z
dc.date.available2009-12-09T12:00:04Z
dc.date.issued1999
dc.identifier.citationHesse , E & Creighton , J A 1999 , ' Investigation by surface enhanced Raman spectroscopy of the effect of oxygen or hydrogen plasmas on the surface chemistry of adsorbate-covered gold island films ' , Langmuir , vol. 15 , no. 10 , pp. 3545-3550 . https://doi.org/10.1021/la9813578
dc.identifier.issn0743-7463
dc.identifier.otherPURE: 173208
dc.identifier.otherPURE UUID: d215831f-4f60-43ab-ac8d-feddabd29d17
dc.identifier.otherdspace: 2299/4084
dc.identifier.otherScopus: 0032677232
dc.identifier.otherORCID: /0000-0002-2721-7600/work/62749862
dc.identifier.urihttp://hdl.handle.net/2299/4084
dc.descriptionOriginal article can be found at: http://pubs.acs.org/loi/langd5 Copyright American Chemical Society. DOI: 10.1021/la9813578 [Full text of this article is not available in the UHRA]
dc.description.abstractThe effects of radio-frequency-excited oxygen and hydrogen plasmas on gold island films with adsorbed CN-, thiophenate, or p-nitrobenzoate ions have been investigated by surface-enhanced Raman spectroscopy (SERS). An oxygen plasma caused oxidation of adsorbed CN- to Au(CN)4-, and there was evidence of oxidation of the adsorption site gold atoms at the Au/p-nitrobenzoate surface, while in a hydrogen plasma Au(CN)4- was reduced back to adsorbed CN-. No adsorbed oxidation or reduction products of thiophenate or p-nitrobenzoate were detected, however. Exposure of gold films to an oxygen or hydrogen plasma also caused partial removal of the adsorbates, though with some loss of SERS activity, and in a hydrogen plasma thiophenate was preferentially removed from a gold film with coadsorbed thiophenate and CN-. On silver films, hydrogen plasma treatment almost completely removed adsorbed CN- with only a small loss of SERS activity, but in an oxygen plasma the films were rapidly destroyed.en
dc.language.isoeng
dc.relation.ispartofLangmuir
dc.titleInvestigation by surface enhanced Raman spectroscopy of the effect of oxygen or hydrogen plasmas on the surface chemistry of adsorbate-covered gold island filmsen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionCentre for Atmospheric and Climate Physics Research
dc.contributor.institutionScience & Technology Research Institute
dc.contributor.institutionLight Scattering & Radiactive Properties
dc.description.statusPeer reviewed
rioxxterms.versionofrecordhttps://doi.org/10.1021/la9813578
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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