Coexistence of precursor and direct dynamics: The sticking of O2 on a Pt(111) surface
- 15 February 1988
- journal article
- letter
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 88 (4), 2843-2845
- https://doi.org/10.1063/1.453967
Abstract
The initial sticking coefficient (probability for dissociative chemisorption) has been measured for O2 on a Pt(111) surface as a function of initial energy, incident angle, and surface temperature using molecular beam techniques. The results reveal two distinct mechanisms for sticking; precursor mediated and direct dissociation, either of which can dominate depending upon the initial adsorption conditions.Keywords
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