XPS Study of Gold Oxidation with Nitrogen Dioxide in Model Au/C Samples Full article
| Journal |
Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
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| Output data | Year: 2015, Volume: 56, Number: 6, Pages: 796-800 Pages count : 5 DOI: 10.1134/S002315841506004X | ||
| Tags | carbon dioxide, gold catalysts, oxidation, pyrolytic graphite, XPS | ||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Russian Science Foundation | 14-23-00146 |
Abstract:
The interaction of NO2 with model samples obtained by the gold sputter deposition onto the sur
face of highly oriented pyrolytic graphite (HOPG) has been studied by Xray photoelectron spectroscopy
(XPS). It has been shown that 3D metal particles characterized by an Au4f7/2 binding energy (BE) of 84.0 eV
form on the initial smooth graphite surface. During the sputter deposition onto the surface of HOPG prelim
inarily activated by means of ion etching, gold atoms chemically bound to the carbon atoms form in the area of surface defects. Such atoms are characterized by a positive shift of BE(Au4f7/2). It has been established that the 3D particles are resistant to the action of NO2 under the pressure = 5 × 10–5 mbar at room temperature. On the contrary, atomic gold oxidizes under these conditions into Au(III) complexes bound to the graphite surface. It is assumed that gold atoms on the support surface play the role of active sites of gold catalysts in oxidation reactions.
Cite:
Kalinkin A.V.
, Smirnov M.Y.
, Bukhtiyarov A.V.
, Bukhtiyarov V.I.
XPS Study of Gold Oxidation with Nitrogen Dioxide in Model Au/C Samples
Kinetics and Catalysis. 2015. V.56. N6. P.796-800. DOI: 10.1134/S002315841506004X WOS Scopus РИНЦ AN OpenAlex
XPS Study of Gold Oxidation with Nitrogen Dioxide in Model Au/C Samples
Kinetics and Catalysis. 2015. V.56. N6. P.796-800. DOI: 10.1134/S002315841506004X WOS Scopus РИНЦ AN OpenAlex
Original:
Калинкин А.В.
, Смирнов М.Ю.
, Бухтияров А.В.
, Бухтияров В.И.
Исследование методом РФЭС окисления золота диоксидом азота в модельных образцах Au/C
Кинетика и катализ. 2015. Т.56. №6. С.785-790. DOI: 10.7868/S0453881115060052 РИНЦ OpenAlex
Исследование методом РФЭС окисления золота диоксидом азота в модельных образцах Au/C
Кинетика и катализ. 2015. Т.56. №6. С.785-790. DOI: 10.7868/S0453881115060052 РИНЦ OpenAlex
Dates:
| Submitted: | Jan 19, 2015 |
| Published print: | Nov 1, 2015 |
| Published online: | Nov 24, 2015 |
Identifiers:
| Web of science: | WOS:000365450000012 |
| Scopus: | 2-s2.0-84948420714 |
| Elibrary: | 24975520 |
| Chemical Abstracts: | 2015:1919000 |
| OpenAlex: | W2174526661 |