HIGH COVERAGES AND SUBSURFACE PENETRATION OF OXYGEN ON RU(001)

被引：44
作者：
MALIK, IJ [1 ]
HRBEK, J [1 ]
机构：
[1] BROOKHAVEN NATL LAB,DEPT CHEM,UPTON,NY 11973
来源：
JOURNAL OF PHYSICAL CHEMISTRY | 1991年 / 95卷 / 24期
关键词：
D O I：
10.1021/j100177a102
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：
Interaction of NO2, an effective source of atomic oxygen, with a Ru(001) single crystal face was studied at substrate temperatures 400-800 K. We present thermal desorption spectroscopy data indicating that up to 40 oxygen monolayers can be accommodated within the surface and subsurface regions. Once oxygen penetrates below the surface, fragments containing Ru atoms (RuO(x), x = 0-3) are detected during desorption and O2 desorbs with near-zero-order kinetics. We briefly discuss these experimental results in terms of a model for subsurface penetration of oxygen on transition metals.
引用
收藏
页码：10188 / 10190
页数：3
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