Study of chemisorption on silver surfaces using ultraviolet photoelectron spectroscopy (UPS) |
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Authors: | L.J. Gerenser R.C. Baetzold |
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Affiliation: | Research Laboratories, Eastman Kodak Company, Rochester, New York 14650, USA |
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Abstract: | Ultraviolet photoelectron spectroscopy (UPS) was used to study the chemisorption of halogens on stepped [3(111) × (100)] and low-index (111) silver surfaces. The initial rate of halogen adsorption using CHCl3 exposure on the silver stepped surface is approximately twice that on the low-index surface. This indicates that steps play an important role in chemisorption even on metals with a low density of states at the Fermi level. The adsorbate-induced levels on silver were correlated with halogen p valence orbitals using model extended Hückel calculations. Changes in the silver d band are interpreted as due to p?d orbital interactions. |
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