Photoemission study of Ce-catalyzed oxidation of W(110) and W(111)

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dc.contributor.author Gu, C.
dc.contributor.author Olson, C. G.
dc.contributor.author Lynch, David
dc.contributor.author Lynch, David
dc.contributor.department Physics and Astronomy
dc.date 2018-02-15T18:41:41.000
dc.date.accessioned 2020-06-30T06:21:56Z
dc.date.available 2020-06-30T06:21:56Z
dc.date.copyright Fri Jan 01 00:00:00 UTC 1993
dc.date.embargo 2015-01-21
dc.date.issued 1993-10-01
dc.description.abstract <p>Different catalytic oxidation effects of Ce on W(110) and W(111) were observed with photo- emission spectroscopy. On Ce-covered W(110), the top W layer is quickly oxidized to a surface monoxide at room temperature. Oxidation is almost halted after the completion of one monolayer of WO. On Ce/W(111), instead of WO, WO3 grows on the surface under the same conditions. The monolayer suboxide formation found on Ce/W(110) and Ce/Ta(110) (as reported earlier) is a direct consequence of the most densely packed structure of the bcc (110) surfaces. The more effective oxidation promotion on the W(111) surface is attributed to its open structure. The mechanism of Ce-catalyzed oxidation is further tested in this study.</p>
dc.description.comments <p>This article is from <em>Pysical Review B</em> 48 (1993): 12178, doi:<a href="http://dx.doi.org/10.1103/PhysRevB.48.12178" target="_blank">10.1103/PhysRevB.48.12178</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/physastro_pubs/91/
dc.identifier.articleid 1089
dc.identifier.contextkey 6551922
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath physastro_pubs/91
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/57527
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/physastro_pubs/91/1993_Lynch_PhotoemissionStudy.pdf|||Sat Jan 15 02:28:13 UTC 2022
dc.source.uri 10.1103/PhysRevB.48.12178
dc.subject.disciplines Atomic, Molecular and Optical Physics
dc.subject.disciplines Condensed Matter Physics
dc.subject.disciplines Physics
dc.subject.keywords Ames Laboratory
dc.subject.keywords spectroscopy
dc.subject.keywords cerium
dc.subject.keywords monolayer suboxide formation
dc.title Photoemission study of Ce-catalyzed oxidation of W(110) and W(111)
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication fa3aaf34-6c45-4f1c-9296-edcfc98e117b
relation.isOrgUnitOfPublication 4a05cd4d-8749-4cff-96b1-32eca381d930
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