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Synthesis, Characterization and Visible-Light Photocatalytic Activity of Solid and TiO2-Supported Uranium Oxycompounds Научная публикация

Журнал Nanomaterials
, E-ISSN: 2079-4991
Вых. Данные Год: 2021, Том: 11, Номер: 4, Номер статьи : 1036, Страниц : 17 DOI: 10.3390/nano11041036
Ключевые слова uranyl nitrate; titanium dioxide; photocatalysis; VOC oxidation; visible light; LED
Авторы Lyulyukin Mikhail 1 , Filippov Tikhon 2 , Cherepanova Svetlana 3 , Solovyeva Maria 1 , Prosvirin Igor 4 , Bukhtiyarov Andrey 4 , Kozlov Denis 1 , Selishchev Dmitry 1
Организации
1 Department of Unconventional Catalytic Processes, Boreskov Institute of Catalysis, 630090 Novosibirsk, Russia
2 Schulich Faculty of Chemistry, Technion–Israel Institute of Technology, Haifa 32000, Israel
3 Department of Catalysts Study, Boreskov Institute of Catalysis, 630090 Novosibirsk, Russia
4 Department of Physicochemical Methods of Research, Boreskov Institute of Catalysis, 630090 Novosibirsk, Russia

Информация о финансировании (1)

1 Российский научный фонд 20-73-10135

Реферат: In this study, various solid uranium oxycompounds and TiO2-supported materials based on nanocrystalline anatase TiO2 are synthesized using uranyl nitrate hexahydrate as a precursor. All uranium-contained samples are characterized using N2 adsorption, XRD, UV–vis, Raman, TEM, XPS and tested in the oxidation of a volatile organic compound under visible light of the blue region to find correlations between their physicochemical characteristics and photocatalytic activity. Both uranium oxycompounds and TiO2-supported materials are photocatalytically active and are able to completely oxidize gaseous organic compounds under visible light. If compared to the commercial visible-light TiO2 KRONOS® vlp 7000 photocatalyst used as a benchmark, solid uranium oxycompounds exhibit lower or comparable photocatalytic activity under blue light. At the same time, uranium compounds contained uranyl ion with a uranium charge state of 6+, exhibiting much higher activity than other compounds with a lower charge state of uranium. Immobilization of uranyl ions on the surface of nanocrystalline anatase TiO2 allows for substantial increase in visible-light activity. The photonic efficiency of reaction over uranyl-grafted TiO2, 12.2%, is 17 times higher than the efficiency for commercial vlp 7000 photocatalyst. Uranyl-grafted TiO2 has the potential as a visible-light photocatalyst for special areas of application where there is no strict control for use of uranium compounds (e.g., in spaceships or submarines).
Библиографическая ссылка: Lyulyukin M. , Filippov T. , Cherepanova S. , Solovyeva M. , Prosvirin I. , Bukhtiyarov A. , Kozlov D. , Selishchev D.
Synthesis, Characterization and Visible-Light Photocatalytic Activity of Solid and TiO2-Supported Uranium Oxycompounds
Nanomaterials. 2021. V.11. N4. 1036 :1-17. DOI: 10.3390/nano11041036 WOS Scopus РИНЦ CAPlusCA PMID OpenAlex
Файлы: Полный текст от издателя
Даты:
Поступила в редакцию: 20 мар. 2021 г.
Принята к публикации: 16 апр. 2021 г.
Опубликована в печати: 19 апр. 2021 г.
Опубликована online: 19 апр. 2021 г.
Идентификаторы БД:
Web of science: WOS:000643351600001
Scopus: 2-s2.0-85104463176
РИНЦ: 46019196
Chemical Abstracts: 2021:1193507
Chemical Abstracts (print): 175:278971
PMID (PubMed): 33921622
OpenAlex: W3156636412
Цитирование в БД:
БД Цитирований
Scopus 9
Web of science 9
РИНЦ 8
OpenAlex 10
Альметрики: