Why the close‐packed Ni(111) surface dissociatively chemisorbs oxygen and nucleates oxide faster than the more open Ni(100) surface

Why the close‐packed Ni(111) surface dissociatively chemisorbs oxygen and nucleates oxide faster than the more open Ni(100) surface

The 300 K kinetics of dissociative chemisorption and oxide island nucleation and growth are compared for Ni(100) and Ni(111). We conclude that the behavior of oxygen sticking probability as a function of coverage can be understood in terms of direct Langmuir adsorption (no molecular diffusion) and t...

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Bibliographic Details
Published in:Journal of vacuum science & technology. A, Vacuum, surfaces, and films Vol. 3; no. 3; pp. 1468 - 1471
Main Author: Brundle, C. R.
Format: Journal Article
Language:English
Published: 01-05-1985
Subjects:
CHEMISORPTION
SORPTIVE PROPERTIES
SOLID CLUSTERS
ADSORPTION
ROUGHNESS
OXYGEN
ISLAND STRUCTURE
NICKEL
DISSOCIATION
MEDIUM TEMPERATURE
KINETICS
SURFACE STRUCTURE
NUCLEATION
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Summary:The 300 K kinetics of dissociative chemisorption and oxide island nucleation and growth are compared for Ni(100) and Ni(111). We conclude that the behavior of oxygen sticking probability as a function of coverage can be understood in terms of direct Langmuir adsorption (no molecular diffusion) and the availability of active empty clusters of adsorption sites of certain sizes and configurations.
Bibliography:SourceType-Scholarly Journals-2
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SourceType-Conference Papers & Proceedings-1
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ISSN:0734-2101
1520-8559
DOI:10.1116/1.572763