Studies of the interaction of CO with the interface states for strained-layer Cu on Ru(0001)
Bimetallic surfaces are important in commercial catalytic applications because they afford the possibility of tailoring catalytic selectivity and activity. They are interesting scientifically because such systems can be studied under very carefully controlled conditions offering the promise of understanding the relationship between structural and electronic properties and the resulting chemical behavior. In recent studies, Cu has been shown to grow in 2d islands psuedo morphic to the Ru(0001) surface under a tensile strain of about 6% with respect to the Cu bulk lattice constant. The chemical behavior of such films is unlike that of either of the pure elements both from the standpoint of the adsorption properties for molecular species and in regard to the reactivity with respect to certain surface chemical reactions. In addition, these strained-layer films show evidence for unique electronic properties, specifically a set of interface and surface states near the anti K point in the surface Brillioun zone (SBZ). This identification was made on the basis of Angular-Resolved Photoemission (ARUPS) and Linearized Augmented Plane Wave (LAPW) calculations. Here, we describe the results of further studies of the behavior of these interface and surface states with respect to the adsorption of CO. 7 refs., 1 fig.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA); Bell Labs., Murray Hill, NJ (USA)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 6953318
- Report Number(s):
- SAND-86-2426C; CONF-861019-13; ON: DE87002477
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400201* -- Chemical & Physicochemical Properties
ADSORPTION
BINDING ENERGY
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYTIC EFFECTS
CHALCOGENIDES
ELEMENTS
ENERGY
INTERFACES
METALS
OXIDES
OXYGEN COMPOUNDS
PLATINUM METALS
RUTHENIUM
SORPTION
SORPTIVE PROPERTIES
SURFACE PROPERTIES
TRANSITION ELEMENTS