Angle-resolved ultraviolet photoelectron spectroscopic studies of CO binding to three chemically different surfaces ZnO. Confirmation of step-binding sites on (0001)

Journal Article · Wed Sep 22 00:00:00 EDT 1982 · J. Am. Chem. Soc.; (United States)

DOI:https://doi.org/10.1021/ja00383a017· OSTI ID:6264773

D'Amico, K L; Trenary, M; Shinn, N D; Solomon, E I; McFeely, F R

Angle-resolved photoelectron spectroscopy (ARPES) has been performed on the ZnO(0001)-CO system. These measurements are compared with previous ARPES results on (1010) and (0001) surfaces and strongly support earlier suggestions that the CO which is observed to chemisorb to this surface binds to ((1010) step sites which contain coordinately unsaturated zinc ions but not to the (0001) terrace sites which contain only coordinatively unsaturated oxide ions. The results of angle-integrated and angle-resolved UV PES studies on the (1010), (0001), (0001), and (1120) low-index surfaces of ZnO have shown that CO consistently binds carbon-end down to the coordinatively unsaturated Zn sites and roughly along the unsaturated Zn direction. The angular behavior of the Zn-C-O surface complexes are completely consistent with the results of LEED studies where in all cases no symmetry-changing reconstructions are observed and where the polar surfaces are known to form a high density of (1010) defect-step sites.

• Research Organization: Massachusetts Inst. of Tech., Cambridge
• DOE Contract Number: AC02-78ER04998
• OSTI ID: 6264773
• Journal Information: J. Am. Chem. Soc.; (United States), Vol. 104:19
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CARBON MONOXIDE
CHEMISORPTION
ZINC OXIDES
PHOTOELECTRON SPECTROSCOPY
SORPTIVE PROPERTIES
ANGULAR DISTRIBUTION
CHEMICAL BONDS
STRUCTURAL CHEMICAL ANALYSIS
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
DISTRIBUTION
ELECTRON SPECTROSCOPY
OXIDES
OXYGEN COMPOUNDS
SEPARATION PROCESSES
SORPTION
SPECTROSCOPY
SURFACE PROPERTIES
ZINC COMPOUNDS
400104* - Spectral Procedures- (-1987)