Formation of Surface Platinum Oxides in the Interaction of the Pt/Sibunit Catalysts with NO2: Estimates of the Width of Oxide Shell from XPS Data Full article
| Journal |
Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
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| Output data | Year: 2018, Volume: 59, Number: 5, Pages: 663-671 Pages count : 9 DOI: 10.1134/s0023158418050130 | ||||
| Tags | platinum, Sibunit, XPS, nitrogen dioxide, core–shell structure | ||||
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| Affiliations |
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Funding (1)
| 1 | Russian Science Foundation | 14-23-00146 |
Abstract:
The method of X-ray photoelectron spectroscopy (XPS) using two types of radiation, nonmonochromatic AlKα (hν = 1486.6 eV) and monochromatic AgLα (hν = 2984.3 eV), was used to study the interaction of the Pt/C (C = Sibunit) catalysts with NO2, which occurs in the preparation chamber of an XPS spectrometer at room temperature and NO2 pressure, equal to 3 × 10–6 mbar. It was found that, under these conditions, platinum was partially oxidized and metallic core becomes covered with a shell formed by a mixture of PtO and PtO2 oxides. The ratio of intensities Pt4f and Pt3d5/2 belonging to platinum oxides to the corresponding intensities of metallic platinum was used to estimate the width of oxide shell. For two of the three studied Pt/C samples, the width of the shell was 0.15–0.3 nm, which approximately corresponds to one monolayer of platinum oxide with a stoichiometry of PtO or PtO2.
Cite:
Smirnov M.Y.
, Vovk E.I.
, Kalinkin A.V.
, Simonov P.A.
, Gerasimov E.Y.
, Bukhtiyarov V.I.
Formation of Surface Platinum Oxides in the Interaction of the Pt/Sibunit Catalysts with NO2: Estimates of the Width of Oxide Shell from XPS Data
Kinetics and Catalysis. 2018. V.59. N5. P.663-671. DOI: 10.1134/s0023158418050130 WOS Scopus РИНЦ AN OpenAlex
Formation of Surface Platinum Oxides in the Interaction of the Pt/Sibunit Catalysts with NO2: Estimates of the Width of Oxide Shell from XPS Data
Kinetics and Catalysis. 2018. V.59. N5. P.663-671. DOI: 10.1134/s0023158418050130 WOS Scopus РИНЦ AN OpenAlex
Original:
Смирнов М.Ю.
, Вовк Е.И.
, Калинкин А.В.
, Симонов П.А.
, Герасимов Е.Ю.
, Бухтияров В.И.
Образование поверхностных оксидов платины при взаимодействии катализаторов Pt/сибунит с NO2. Оценка толщины оксидной оболочки по данным РФЭС
Кинетика и катализ. 2018. Т.59. №5. С.642-651. DOI: 10.1134/S0453881118050131 РИНЦ OpenAlex
Образование поверхностных оксидов платины при взаимодействии катализаторов Pt/сибунит с NO2. Оценка толщины оксидной оболочки по данным РФЭС
Кинетика и катализ. 2018. Т.59. №5. С.642-651. DOI: 10.1134/S0453881118050131 РИНЦ OpenAlex
Dates:
| Submitted: | Mar 22, 2018 |
| Published print: | Sep 1, 2018 |
| Published online: | Sep 26, 2018 |
Identifiers:
| Web of science: | WOS:000445762600016 |
| Scopus: | 2-s2.0-85053827825 |
| Elibrary: | 35734740 |
| Chemical Abstracts: | 2018:1804590 |
| OpenAlex: | W2894454360 |