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dc.contributor.authorHunvik, Kristoffer William Bø
dc.contributor.authorStøvneng, Anna
dc.contributor.authorPacáková, Barbara
dc.contributor.authorRaaen, Steinar
dc.date.accessioned2019-06-18T08:27:46Z
dc.date.available2019-06-18T08:27:46Z
dc.date.created2019-06-17T10:02:20Z
dc.date.issued2019
dc.identifier.citationApplied Surface Science. 2019, 490 430-435.nb_NO
dc.identifier.issn0169-4332
dc.identifier.urihttp://hdl.handle.net/11250/2601141
dc.description.abstractAdsorption and desorption of CO from Ni nanostructures deposited on muscovite mica substrates have been studied by TPD and characterized by XPS and AFM. In agreement with previous reports it is found that CO does not adsorb on the bare mica substrate. The desorption spectra depend strongly on the Ni coverage on the mica substrate. Three coverage regimes have been found; for low Ni coverage of approximately 0.2 monolayers a dominant desorption peak is found near 400 K. For medium coverage of approximately 0.6 monolayers three distinct peaks appear in the temperature region from 250 to 550 K. For higher Ni coverage of approximately 3 monolayers a single peak is observed near 550 K. The high temperature peak was assigned to desorption from terrace sites, the medium temperature peak was assigned to step sites, and the low temperature peak was argued to stem from lateral interaction between adsorbed CO species and possible sites with low coordination, e.g. kink sites. Desorption parameters have been extracted from the low temperature part of the desorption spectra. Anomalous low values for the vibrational prefactors were obtained in the case of low Ni coverage. This is argued to be due to dissociation of CO.nb_NO
dc.language.isoengnb_NO
dc.publisherElseviernb_NO
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/deed.no*
dc.titleCO desorption from nickel-decorated muscovite micanb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionpublishedVersionnb_NO
dc.source.pagenumber430-435nb_NO
dc.source.volume490nb_NO
dc.source.journalApplied Surface Sciencenb_NO
dc.identifier.doihttps://doi.org/10.1016/j.apsusc.2019.06.073
dc.identifier.cristin1705297
dc.relation.projectNorges forskningsråd: 250728nb_NO
dc.description.localcode© 2019 The Authors. Published by Elsevier B.V. Open Access CC-BY-NC-NDnb_NO
cristin.unitcode194,66,20,0
cristin.unitnameInstitutt for fysikk
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal
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