Controlled FCC/on-top binding of H/Pt(111) using surface stress

[Display omitted] •The preferred binding position of H/Pt(111) changes from on-top to FCC as the surface goes approximately from compressive to tensile strain.•Changes in the binding site preference are determined by both the H sPt s and H sPt d interactions.•FCC-bound H produces a state at energies...

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Bibliographic Details
Published in:Applied surface science Vol. 378; pp. 286 - 292
Main Author: Shuttleworth, I.G.
Format: Journal Article
Language:English
Published: Elsevier B.V 15.08.2016
Subjects:
Binding
Binding sites
Chemical analysis
Compressive properties
Control surfaces
Hydrogen
Platinum
Strain
Strain engineering
Stresses
Surface segregation
Hydrogen
Platinum
Surface segregation
Strain engineering
ISSN:0169-4332, 1873-5584
Online Access:Get full text
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Summary:[Display omitted] •The preferred binding position of H/Pt(111) changes from on-top to FCC as the surface goes approximately from compressive to tensile strain.•Changes in the binding site preference are determined by both the H sPt s and H sPt d interactions.•FCC-bound H produces a state at energies below those of the Pt d-band. The preferred binding site of H/Pt(111) has been shown to be change from the on-top to FCC as the Pt(111) surface goes approximately from a state of compressive to tensile strain. A chemical analysis of the system has shown that for both FCC and on-top bound cases the H sPt s and H sPt d interactions have a similar importance in determining the preferred binding position. It has been seen that FCC-bound H forms a distinct state below the Pt d-band, whereas the on-top bound H does not.
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ISSN:0169-4332
1873-5584
DOI:10.1016/j.apsusc.2016.03.173