Physical Review Letters · 1980 · 401 citations · 14 references
Natural SciencesChemistryMaterials SciencePhysical ChemistrySurface ChemistrySurface ScienceAdsorption At InterfacesSurface AdsorptionSurface Chemistry Of SolidsSurface PhysicsSurface ReactionsSurface SpectroscopyAdsorbate - Surface InteractionsAdsorbate CharacterizationAdsorbate InteractionsAdsorbent InteractionsAdsorption ChemistryAdsorption On Metal SurfacesElectronic Structure AnalysisSurface Adsorption Phenomena
The electronic structure and vibrations of an adsorbed hydroxyl (OH) species are identified and characterized for the first time on a transition-metal surface. In this study of water's interaction with clean Pt(111) in ultrahigh vacuum, water adsorbed at 100 K desorbs at 180 K without appreciable dissociation. However, in the presence of adsorbed atomic oxygen, water dissociates above 150 K to form adsorbed hydroxyl species. The O-H axis appears to be bent relative to the surface normal.
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