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Sökning: onr:"swepub:oai:gup.ub.gu.se/76830" > Infrared spectrosco...

LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00003117naa a2200409 4500
001oai:gup.ub.gu.se/76830
003SwePub
008240528s2007 | |||||||||||000 ||eng|
009oai:research.chalmers.se:7c03d96b-f6dd-4a97-81a0-dff8dd9bcac5
024a https://gup.ub.gu.se/publication/768302 URI
024a https://doi.org/10.1063/1.28048692 DOI
024a https://research.chalmers.se/publication/768302 URI
040 a (SwePub)gud (SwePub)cth
041 a eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
100a Gustafsson, Kristian,d 1972u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)gkri
2451 0a Infrared spectroscopy of physisorbed and chemisorbed N-2 in the Pt(111)(3x3)N-2 structure
264 1b AIP Publishing,c 2007
520 a Using infrared spectroscopy and low electron energy diffraction, we have investigated the adsorption of N-2, at 30 K, on the Pt(111) and the Pt(111)(1x1)H surfaces. At monolayer coverage, N-2 orders in commensurate (3x3) structures on both surfaces, and we propose that the unit cells contain four molecules in each case. The infrared spectra reveal that N-2 exclusively physisorbs on the Pt(111)(1x1)H surface, while both physisorbed and chemisorbed N-2 is detected on the Pt(111) surface. Physisorbed N-2 is the majority species in the latter case, and the two adsorption states show an almost identical uptake behavior, which indicates that they are intrinsic constituents of the growing (3x3) N-2 islands. An analysis of the infrared absorbance data, based on a simple scaling concept suggested by density functional theory calculations, supports a model in which the (3x3) unit cell contains one chemisorbed molecule in end-on atop configuration and three physisorbed molecules. We note that a classic ''pinwheel'' structure on a hexagonal lattice, with the end-on chemisorbed N2 molecules acting as ''pins,'' is compatible with this composition. (C) 2007 American Institute of Physics.
650 7a TEKNIK OCH TEKNOLOGIERx Annan teknik0 (SwePub)2112 hsv//swe
650 7a ENGINEERING AND TECHNOLOGYx Other Engineering and Technologies0 (SwePub)2112 hsv//eng
653 a TOTAL-ENERGY CALCULATIONS
653 a DEFECT SITES
653 a PT(111)
653 a ADSORPTION
653 a SURFACES
653 a TOTAL-ENERGY CALCULATIONS
700a Karlberg, G. S.u Danmarks Tekniske Universitet,Technical University of Denmark4 aut
700a Andersson, Stig,d 1941u Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU),University of Gothenburg4 aut0 (Swepub:gu)xandst
710a Chalmers tekniska högskolab Danmarks Tekniske Universitet4 org
773t Journal of Chemical Physicsd : AIP Publishingg 127:19q 127:19x 0021-9606x 1089-7690
856u https://backend.orbit.dtu.dk/ws/files/4793547/Karl.pdf
8564 8u https://gup.ub.gu.se/publication/76830
8564 8u https://doi.org/10.1063/1.2804869
8564 8u https://research.chalmers.se/publication/76830

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