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

被引：12

作者：

Becker, T ^{[1
]}

Boas, C ^{[1
]}

Burghaus, U ^{[1
]}

Wöll, C ^{[1
]}

机构：

[1] Ruhr Univ Bochum, D-44780 Bochum, Germany

来源：

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS | 2000年 / 18卷 / 04期

关键词：

D O I：

10.1116/1.582475

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We present measurements of initial adsorption probabilities, S-0, as well as its coverage dependence, S(Theta(CO)), of CO on oxygen terminated ZnO(0001). The impact energies of the CO (48 meV < E-i < 750 meV) and surfaces temperature (75 K < T-S < 220 K) have been varied. The shape of the coverage dependent adsorption probability curves indicates the presence of precursor mediated adsorption. The heat of adsorption has been determined to (7-2 Theta(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].

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页码：1089 / 1092

页数：4

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