Spectroscopic Properties of CrOx/Al2O3 Nanopowders Synthesized by cw CO2 Laser Vaporization Научная публикация
| Конференция |
The IX International Symposium “Modern Problems of Laser Physics” 23-31 авг. 2021 , Novosibirsk |
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| Журнал |
Journal of Physics: Conference Series
ISSN: 1742-6588 , E-ISSN: 1742-6596 |
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| Вых. Данные | Год: 2021, Том: 2067, Номер статьи : 012007, Страниц : 7 DOI: 10.1088/1742-6596/2067/1/012007 | ||
| Ключевые слова | Alumina; Aluminum oxide; Carbon dioxide; Carbon dioxide lasers; Chromium compounds; Nanoparticles; Particle size; Spectroscopic analysis; Vaporization | ||
| Авторы |
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| Организации |
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Информация о финансировании (2)
| 1 | Министерство науки и высшего образования Российской Федерации (с 15 мая 2018) | 0239-2021-0011 |
| 2 | Российский фонд фундаментальных исследований | 20-43-540005 |
Реферат:
Nanosized 5.0 wt% Cr/nano-Al2O3 powders with the particle size of ca. 15 nm were synthesized via laser vaporization using irradiation by a cw CO2 laser in different gas atmospheres – Ar, Ar+O2, Ar+H2. All the investigated nanopowders were studied by XRF, XRD, TEM, UV-vis DRS and PL spectroscopy methods. The nanopowders were found to contain the Cr6+ ions located on the surface of Al2O3 nanoparticles and two types of Cr3+ sites. One type is Cr3+ ions located in the bulk (Cr3+b-sites) of Al2O3 matrix in a strong crystal field. The second type is represented by Cr3+ sites residing near the surface (Cr3+s-sites) of CrOx/Al2O3 nanoparticles in a weak crystal field. It was shown that varying the composition of the buffer gas (Ar, Ar+O2, Ar+H2) during laser vaporization makes it possible to control the properties of the obtained 5.0 wt% Cr/nano-Al2O3 nanopowders with a change in Cr6+/Cr3+ ratio in the bulk and on the surface of alumina support.
Библиографическая ссылка:
Baronskiy M.G.
, Kostyukov A.I.
, Snytnikov V.N.
Spectroscopic Properties of CrOx/Al2O3 Nanopowders Synthesized by cw CO2 Laser Vaporization
Journal of Physics: Conference Series. 2021. V.2067. 012007 :1-7. DOI: 10.1088/1742-6596/2067/1/012007 Scopus РИНЦ OpenAlex
Spectroscopic Properties of CrOx/Al2O3 Nanopowders Synthesized by cw CO2 Laser Vaporization
Journal of Physics: Conference Series. 2021. V.2067. 012007 :1-7. DOI: 10.1088/1742-6596/2067/1/012007 Scopus РИНЦ OpenAlex
Даты:
| Принята к публикации: | 12 окт. 2021 г. |
| Опубликована в печати: | 9 нояб. 2021 г. |
| Опубликована online: | 9 нояб. 2021 г. |
Идентификаторы БД:
| Scopus: | 2-s2.0-85120502133 |
| РИНЦ: | 47539318 |
| OpenAlex: | W3214012977 |