Electron spectroscopic study of the interaction of oxygen with Co(110) and of coadsorption with water
| Autor: | Gerd Wedler, F. Grellner, B. Klingenberg, D. Borgmann |
|---|---|
| Rok vydání: | 1995 |
| Předmět: |
Auger electron spectroscopy
Radiation Chemistry Analytical chemistry Nucleation Oxide chemistry.chemical_element Condensed Matter Physics Oxygen Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials chemistry.chemical_compound Adsorption X-ray photoelectron spectroscopy Chemisorption Work function Physical and Theoretical Chemistry Spectroscopy |
| Zdroj: | Journal of Electron Spectroscopy and Related Phenomena. 71:107-115 |
| ISSN: | 0368-2048 |
| Popis: | Coverage dependence of oxygen adsorption on the hexagonal Co(11 2 0) surface is studied at 100 and 320 K by means of Auger electron spectroscopy (AES), photoelectron spectroscopy (XPS, UPS) and change in work function (Δφ). Adsorption of oxygen at 100 K leads to the formation of Co 3 O 4 -like features together with adsorbed oxygen. An influence of a precursor on the adsorption kinetics is proposed. Oxygen at 320 K builds up CoO, and the uptake behaviour is explained best in terms of chemisorption and oxide nucleation followed by island growth of the oxide. The explanation of the nature of a second oxygen species, observed in the O1s XP spectra, and the characterisation of OH are facilitated by a coadsorption experiment with oxygen and water at 100 K. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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