Abstract
On zinc films, the adsorption probability of O2 is extremely low (10−3–10−2), and O2 exposures in the range of 103–104 langmuir are necessary to produce a significant transformation of metallic zinc into zinc oxide. The presence of submonolayer coverages of cesium enhances the oxidation rate of zinc by 2–3 orders of magnitude. The cesium adatoms interact with O2 molecules, producing a reservoir of reactive oxygen species that oxidize zinc.
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Rodriguez, J.A., Hrbek, J. Cesium-catalyzed oxidation of zinc surfaces. Catal Lett 26, 393–399 (1994). https://doi.org/10.1007/BF00810613
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DOI: https://doi.org/10.1007/BF00810613