The Chemisorption of Oxygen on the Iridium (111) Surface Full article
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Surface Science
ISSN: 0039-6028 |
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| Output data | Year: 1976, Volume: 61, Number: 1, Pages: 207-220 Pages count : 14 DOI: 10.1016/0039-6028(76)90415-5 | ||||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | National Science Foundation | GP-41807 |
Abstract:
The adsorption of oxygen in Ir(111) has been investigated under ultrahigh vacuum conditions. Thermal desorption spectra of O2 indicate a coverage-dependent activation energy for desorption of Ed ≅ (65−10Θ) kcal/mole. The adsorption proceeds via a highly mobile precursor state giving a constant value for the sticking probability until saturation coverage is nearly reached. The work function change at saturation coverage of oxygen is Δφ = 0.56 ± 0.04 eV. The induction period necessary for the formation of a (2 × 2) LEED pattern indicates that the activation energy for diffusion of the oxygen adatoms on Ir(111) is in the range 16–19 kcal/mole Upon heating the crystal to moderate temperatures (e.g., ∼700K), the surface oxygen is partially converted into an unreactive oxide which is present in the near surface region.
Cite:
Ivanov V.P.
, Boreskov G.K.
, Savchenko V.I.
, Egelhoff Jr. W.F.
, Weinberg W.H.
The Chemisorption of Oxygen on the Iridium (111) Surface
Surface Science. 1976. V.61. N1. P.207-220. DOI: 10.1016/0039-6028(76)90415-5 WOS Scopus РИНЦ ANCAN OpenAlex
The Chemisorption of Oxygen on the Iridium (111) Surface
Surface Science. 1976. V.61. N1. P.207-220. DOI: 10.1016/0039-6028(76)90415-5 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
| Submitted: | May 27, 1976 |
| Accepted: | Aug 24, 1976 |
| Published print: | Dec 1, 1976 |
| Published online: | Sep 18, 2002 |
Identifiers:
| Web of science: | WOS:A1976CS74200013 |
| Scopus: | 2-s2.0-0001498648 |
| Elibrary: | 30800497 |
| Chemical Abstracts: | 1977:79165 |
| Chemical Abstracts (print): | 86:79165 |
| OpenAlex: | W2010546611 |