Surface Dynamics of Mixed Silver-Copper Oxide AgCuO2 During X-Ray Photoelectron Spectroscopy Study Full article
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Applied Surface Science
ISSN: 0169-4332 |
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| Output data | Year: 2019, Volume: 463, Pages: 300-309 Pages count : 10 DOI: 10.1016/j.apsusc.2018.08.234 | ||||
| Tags | Mixed silver-copper oxide; AgCuO2; Ag2Cu2O; 4XPS; Synchrotron radiation; High-valent copper | ||||
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| Affiliations |
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Funding (1)
| 1 | Federal Agency for Scientific Organizations | 0303-2016-0003 |
Abstract:
A detailed study of mixed silver-copper oxide AgCuO2 was performed using X-ray photoelectron spectroscopy. The state and ratio of elements on the surface at different probing depth was revealed using variable radiation energy. A non-uniform in-depth distribution of silver and copper states was established. Two silver states were detected on the initial surface: (1) highly oxidized Ag>1+ ions from AgCuO2 lattice and (2) impurity Ag0 metallic species. The appearance of metallic species was related to AgCuO2 surface reduction by adsorbed carbon admixtures during air-storage. It was shown that highly oxidized copper species can be identified by the analysis of shake-up satellites in Cu2p region during step-by-step exposure to X-rays. This approach, considering all spectral changes versus time, allowed us to reveal the presence of copper with the oxidation level higher than +2 on the initial AgCuO2 surface. It was found that a long-term exposure to intense X-rays significantly modifies the composition and state of the AgCuO2 surface. Possible causes of such modification are discussed in relation to the AgCuO2 reaction properties.
Cite:
Svintsitskiy D.A.
, Kardash T.Y.
, Boronin A.I.
Surface Dynamics of Mixed Silver-Copper Oxide AgCuO2 During X-Ray Photoelectron Spectroscopy Study
Applied Surface Science. 2019. V.463. P.300-309. DOI: 10.1016/j.apsusc.2018.08.234 WOS Scopus РИНЦ ANCAN OpenAlex
Surface Dynamics of Mixed Silver-Copper Oxide AgCuO2 During X-Ray Photoelectron Spectroscopy Study
Applied Surface Science. 2019. V.463. P.300-309. DOI: 10.1016/j.apsusc.2018.08.234 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
| Submitted: | Jun 5, 2018 |
| Accepted: | Aug 27, 2018 |
| Published online: | Aug 27, 2018 |
| Published print: | Jan 1, 2019 |
Identifiers:
| Web of science: | WOS:000452782100036 |
| Scopus: | 2-s2.0-85052447708 |
| Elibrary: | 35771302 |
| Chemical Abstracts: | 2018:1643079 |
| Chemical Abstracts (print): | 169:403444 |
| OpenAlex: | W2889320302 |