Adsorption probabilities of CO on O-ZnO: A molecular beam study

Authors
Becker, T Boas, C Burghaus, U Woll, C
Citation
T. Becker et al., Adsorption probabilities of CO on O-ZnO: A molecular beam study, J VAC SCI A, 18(4), 2000, pp. 1089-1092
Citations number
23
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS
ISSN journal
07342101 → ACNP
Volume
18
Issue
4
Year of publication
2000
Part
1
Pages
1089 - 1092
Database
ISI
SICI code
0734-2101(200007/08)18:4<1089:APOCOO>2.0.ZU;2-8
Abstract
We present measurements of initial adsorption probabilities, S-0, as well a s its coverage dependence, S(Theta(CO)), of CO on oxygen terminated ZnO(000 1). The impact energies of the CO (48 meV < E-i < 750 meV) and surfaces tem perature (75 K < T-S < 220 K) have been varied. The shape of the coverage d ependent adsorption probability curves indicates the presence of precursor mediated adsorption. The heat of adsorption has been determined to (7-2 The ta(CO)) kcal/mol by assuming a pre-exponential factor of 1 x 10(13) l/s. (C ) 2000 American Vacuum Society. [S0734-2101(00)11704-X].