ADSORPTION AND INCORPORATION OF OXYGEN ON CU(110) AND ITS REACTION WITH CARBON-MONOXIDE

被引：103

作者：

HABRAKEN, FHPM ^{[1
]}

BOOTSMA, GA ^{[1
]}

HOFMANN, P ^{[1
]}

HACHICHA, S ^{[1
]}

BRADSHAW, AM ^{[1
]}

机构：

[1] MAX PLANCK GESELL,FRITZ HABER INST,D-1000 BERLIN 33,FED REP GER

来源：

SURFACE SCIENCE | 1979年 / 88卷 / 2-3期

关键词：

D O I：

10.1016/0039-6028(79)90076-1

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The initial interaction of oxygen with a Cu(110) surface occurs in two stages, characterised by (2 × 1) and c(6 × 2) overlayer structures and then a third stage where the c(6 × 2) structure remains but further oxygen uptake is registered only with ellipsometry. The first stage is nonactivated and is accompanied by a work function increase of 370-420 meV, depending on sample temperature. The subsequent appearance of the extra features associated with the c(6 × 2) structure in the second stage is accompanied by a decrease in work function of ∼100 meV and is characterised by an apparent activation energy of ∼18 kJ mol-1. The adsorbed oxygen can be removed at all coverages by gas-phase CO. The reaction appears to follow Langmuir-Hinshelwood kinetics with an apparent activation energy of ∼25 kJ mol-1. © 1979.

引用

页码：285 / 298

页数：14

共 19 条

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