Using SAXS for Determining the Sizes of Gold Nanoparticles in Au/C Catalysts: Advantages over Other Methods Full article
| Journal |
Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
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| Output data | Year: 2023, Volume: 64, Number: 6, Pages: 882–894 Pages count : 13 DOI: 10.1134/S0023158423060083 | ||||
| Tags | gold nanoparticles, SAXS, TEM, XRD, CO oxidation, carbon | ||||
| Authors |
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| Affiliations |
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Funding (2)
| 1 | Ministry of Science and Higher Education of the Russian Federation | FSUS-2020-0029 |
| 2 | Ministry of Science and Higher Education of the Russian Federation | 0239-2021-0003 |
Abstract:
The advantages of using SAXS along with the masking liquid technique for determining the sizes of supported metal particles over the standard TEM and XRD methods, usually used for these purposes, were shown in the case of Au/C catalysts. Particle size distributions of gold in a wide range (1–50 nm) were obtained from the SAXS data, including for all size fractions present in the samples. The mass fractions of X-ray amorphous gold particles smaller than 4 nm (WSAXS) were determined. The oxidative treatment of the carbon support before the deposition of the metallic gold precursor complexes has a significant effect on the size distribution of gold particles in the final catalyst. A comparison of the experimental rates of CO oxidation with an excess of moist air at 40°C on Au/C catalysts with the WSAXS values found for these catalysts showed that the catalytic activity increased exponentially as WSAXS increased. The Au/C catalysts with WSAXS ≥ 80% showed high activity in the oxidation of CO.
Cite:
Larichev Y.V.
, Moroz B.L.
, Pyrjaev P.A.
, Bukhtiyarov V.I.
Using SAXS for Determining the Sizes of Gold Nanoparticles in Au/C Catalysts: Advantages over Other Methods
Kinetics and Catalysis. 2023. V.64. N6. P.882–894. DOI: 10.1134/S0023158423060083 WOS Scopus РИНЦ AN OpenAlex
Using SAXS for Determining the Sizes of Gold Nanoparticles in Au/C Catalysts: Advantages over Other Methods
Kinetics and Catalysis. 2023. V.64. N6. P.882–894. DOI: 10.1134/S0023158423060083 WOS Scopus РИНЦ AN OpenAlex
Original:
Ларичев Ю.В.
, Мороз Б.Л.
, Пыряев П.А.
, Бухтияров В.И.
Применение метода малоуглового рентгеновского рассеяния для определения размеров наночастиц золота в катализаторах Au/C: преимущества перед другими методами
Кинетика и катализ. 2023. Т.64. №6. С.822-836. DOI: 10.31857/S0453881123060096 РИНЦ OpenAlex
Применение метода малоуглового рентгеновского рассеяния для определения размеров наночастиц золота в катализаторах Au/C: преимущества перед другими методами
Кинетика и катализ. 2023. Т.64. №6. С.822-836. DOI: 10.31857/S0453881123060096 РИНЦ OpenAlex
Dates:
| Submitted: | Mar 24, 2023 |
| Accepted: | Apr 27, 2023 |
| Published print: | Dec 12, 2023 |
| Published online: | Dec 12, 2023 |
Identifiers:
| Web of science: | WOS:001122621800013 |
| Scopus: | 2-s2.0-85179716386 |
| Elibrary: | 56643978 |
| Chemical Abstracts: | 2023:2603176 |
| OpenAlex: | W4389616589 |