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Full Record Details
Persistent URL
http://purl.org/net/epubs/work/20682
Record Status
Checked
Record Id
20682
Title
The dynamic catalytic surface: probing bimetallic active sites with medium energy ion scattering
Contributors
CJ Baddeley (Liverpool U.)
,
LH Bloxham (Liverpool U.)
,
SC Laroze (Liverpool U.)
,
R Raval (Liverpool U.)
,
TCQ Noakes (CCLRC Daresbury Lab.)
,
P Bailey (CCLRC Daresbury Lab.)
Abstract
The shadowing and blocking effects exhibited by medium energy ion scattering (MEIS) make it a uniquely effective technique for the analysis of the layer composition of bimetallic surfaces. We use MEIS to study adsorbate-induced segregation effects at the Cu50Pd50(110) surface. We show that the clean surface composition is strongly dependent on sample preparation. In addition, the adsorption of chlorohydrocarbons causes substantial surface layer Cu enrichment (up to 100% Cu), whereas hydrocarbon adsorption causes Pd enrichment. We propose an explanation for the magnitude of these segregation effects in terms of the surface chemistry of these molecules.
Organisation
CCLRC
,
SND
,
MEIS
Keywords
Funding Information
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Licence Information:
Language
English (EN)
Type
Details
URI(s)
Local file(s)
Year
Journal Article
Surf Sci
433-435 (1999): 827-832.
doi:10.1016/S0039-6028(99)00465-3
1999
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