The (111) Surface of NaAu2: Structure, Composition, and Stability

dc.contributor.author Huang, Wenyu
dc.contributor.author Thiel, Patricia
dc.contributor.author Kwolek, Emma
dc.contributor.author Widmer, Roladn
dc.contributor.author Gröning, Oliver
dc.contributor.author Deniz, Okan
dc.contributor.author Schlagel, Deborah
dc.contributor.author Walen, Holly
dc.contributor.author Yuen, Chad
dc.contributor.author Huang, Wenyu
dc.contributor.author Schlagel, Deborah
dc.contributor.author Wallingford, Mark
dc.contributor.author Thiel, Patricia
dc.contributor.department Chemistry
dc.date 2018-02-16T16:01:47.000
dc.date.accessioned 2020-06-30T01:23:31Z
dc.date.available 2020-06-30T01:23:31Z
dc.date.copyright Wed Jan 01 00:00:00 UTC 2014
dc.date.issued 2015-01-01
dc.description.abstract <p>The (111) surface of single-crystal NaAu2 is a model for catalytically active, powdered NaAu2. We prepare and characterize this surface with a broad suite of techniques. Preparation in ultrahigh vacuum consists of the traditional approach of ion bombardment (to remove impurities) and thermal annealing (to restore surface order). Both of these steps, however, cause loss of sodium (Na), and repeated treatments eventually trigger conversion of the surface and near-surface regions to crystalline gold. The bulk has a limited ability to repopulate the surface Na. Under conditions where Na depletion is minimized, electron diffraction patterns are consistent with the bulkterminated structure, and scanning tunneling microscopy reveals mesa-like features with lateral dimensions of a few tens of nanometers. The tops of the mesas do not possess fine structure characteristic of a periodic lattice, suggesting that the surface layer is disordered under the conditions of these experiments.</p>
dc.description.comments <p>Reprinted (adapted) wit permission from <em>Inorganic Chemistry</em> 54 (2015): 1159, doi:<a href="http://dx.doi.org/10.1021/ic5025444" target="_blank"> 10.1021/ic5025444</a>. Copyright 2014 American Chemical Society.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/chem_pubs/87/
dc.identifier.articleid 1087
dc.identifier.contextkey 7272091
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath chem_pubs/87
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/15367
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/chem_pubs/87/0-2015_ThielPA_111SurfaceNaAu2.pdf|||Sat Jan 15 02:15:25 UTC 2022
dc.source.bitstream archive/lib.dr.iastate.edu/chem_pubs/87/2015_ThielPA_111SurfaceNaAu2.pdf|||Sat Jan 15 02:15:26 UTC 2022
dc.source.uri 10.1021/ic5025444
dc.subject.disciplines Chemistry
dc.subject.disciplines Materials Science and Engineering
dc.subject.keywords Ames Laboratory
dc.subject.keywords Materials Science & Technology
dc.title The (111) Surface of NaAu2: Structure, Composition, and Stability
dc.type article
dc.type.genre article
dspace.entity.type Publication
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relation.isOrgUnitOfPublication 42864f6e-7a3d-4be3-8b5a-0ae3c3830a11
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