Mechanisms of Pd(1 1 0) Surface Reconstruction and Oxidation: XPS, LEED and TDS Study Full article
| Conference |
23rd European Conference on Surface Science 04-09 Sep 2005 , Berlin |
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| Journal |
Surface Science
ISSN: 0039-6028 |
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| Output data | Year: 2006, Volume: 600, Number: 18, Pages: 4119-4125 Pages count : 7 DOI: 10.1016/j.susc.2006.01.131 | ||
| Tags | Catalysis, Chemisorption, Oxidation, Palladium, Single crystal surfaces, Thermal desorption spectroscopy, X-ray photoelectron spectroscopy | ||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Russian Foundation for Basic Research | 03-03-33177 |
Abstract:
Oxygen interaction with Pd(1 1 0) has been studied in a wide range of pressures (Po2 = 10−6–100 Pa) and temperatures (T = 400–600 K) by X-ray photoelectron spectroscopy (XPS), low energy electron diffraction (LEED) and thermal desorption spectroscopy (TDS). The amount of oxygen absorbed by Pd(1 1 0) single crystal grows to more than 100 ML when the reaction temperature and the O2 exposure are increased. Several reconstructed and oxide structures are sequentially formed on Pd(1 1 0) as the amount of adsorbed and absorbed oxygen increases. During oxygen adsorption (1 × 2) reconstruction occurs and a c(2 × 4) structure is formed on Pd(1 1 0) at θ = 0.5 ML. When the amount of absorbed oxygen increases from 0.5 to 2.0 ML, oxygen penetrates into subsurface Pd layers to the depth exceeding 15–20 Å while retaining the c(2 × 4) structure. When the amount of absorbed oxygen is between 2 and 5 ML, the surface is subjected to reconstruction with the formation of a surface oxide with θ ∼ 0.8 that has a complex LEED diffraction pattern. Further increase of the amount of absorbed oxygen beyond 5 ML leads to oxygen location in the subsurface region forming PdO clusters. They gradually grow to form an almost continuous layer composed of PdO clusters.
Cite:
Titkov A.I.
, Salanov A.N.
, Koshcheev S.V.
, Boronin A.I.
Mechanisms of Pd(1 1 0) Surface Reconstruction and Oxidation: XPS, LEED and TDS Study
Surface Science. 2006. V.600. N18. P.4119-4125. DOI: 10.1016/j.susc.2006.01.131 WOS Scopus РИНЦ ANCAN OpenAlex
Mechanisms of Pd(1 1 0) Surface Reconstruction and Oxidation: XPS, LEED and TDS Study
Surface Science. 2006. V.600. N18. P.4119-4125. DOI: 10.1016/j.susc.2006.01.131 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
| Published online: | May 8, 2006 |
| Published print: | Sep 15, 2006 |
Identifiers:
| Web of science: | WOS:000241450600122 |
| Scopus: | 2-s2.0-33748932691 |
| Elibrary: | 13532557 |
| Chemical Abstracts: | 2006:1023224 |
| Chemical Abstracts (print): | 146:13907 |
| OpenAlex: | W2000655002 |