Journal
PHYSICAL REVIEW LETTERS
Volume 103, Issue 24, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.103.246102
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Funding
- Office of Basic Energy Science of the U. S. Department of Energy [DOE-BES DEFG0207ER15919]
- NSF [0717978]
- Beckman Foundation
- Research Corporation
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [0717978] Funding Source: National Science Foundation
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Using a combination of low-temperature scanning tunneling microscopy and density functional theory it is demonstrated how the nature of an inert host metal of an alloy can affect the thermodynamics and kinetics of a reaction pathway in a much more profound way than simply a dilution, electronic, or geometric effect. This study reveals that individual, isolated Pd atoms can promote H(2) dissociation and spillover onto a Cu(111) surface, but that the same mechanism is not observed for an identical array of Pd atoms in Au(111).
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