Precursor adsorption of CO on Ni(111) near 5 K and the activation energy for chemisorption

Measurements of low energy electron transmission spectrum and work function φ of a Ni(111) surface held at T = 5.5 K during exposure to CO provide direct evidence for a precursor adsorption preceding chemisorption. Subsequent warming of the CO covered surface leads to the chemisorption state. An ana...

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Bibliographic Details
Published in:Surface science 1985-05, Vol.154 (2), p.L239-L246
Main Authors: Shayegan, M., Williams, E.D., Glover, R.E., Park, Robert L.
Format: Article
Language:English
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Summary:Measurements of low energy electron transmission spectrum and work function φ of a Ni(111) surface held at T = 5.5 K during exposure to CO provide direct evidence for a precursor adsorption preceding chemisorption. Subsequent warming of the CO covered surface leads to the chemisorption state. An analysis of the kinetics of the increase in φ that accompanies this transition gives an activation energy of ~ 4 meV for the reaction.
ISSN:0039-6028
1879-2758
DOI:10.1016/0039-6028(85)90033-0