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Visible-Light-Active N-Doped TiO2 Photocatalysts: Synthesis from TiOSO4, Characterization, and Enhancement of Stability via Surface Modification Научная публикация

Журнал Nanomaterials
, E-ISSN: 2079-4991
Вых. Данные Год: 2022, Том: 12, Номер: 23, Номер статьи : 4146, Страниц : 24 DOI: 10.3390/nano12234146
Ключевые слова photocatalytic oxidation; visible light; N-doped TiO2; copper (Cu); nanocomposite; action spectrum; EPR; stability
Авторы Kovalevskiy Nikita 1 , Svintsitskiy Dmitry 2 , Cherepanova Svetlana 2 , Yakushkin Stanislav 3 , Martyanov Oleg 3 , Selishcheva Svetlana 4 , Gribov Evgeny 1 , Kozlov Denis 1 , Selishchev Dmitry 1
Организации
1 Department of Unconventional Catalytic Processes, Boreskov Institute of Catalysis, Novosibirsk 630090, Russia
2 Department of Heterogeneous Catalysis, Boreskov Institute of Catalysis, Novosibirsk 630090, Russia
3 Department of Physicochemical Methods of Research, Boreskov Institute of Catalysis, Novosibirsk 630090, Russia
4 Engineering Center, Boreskov Institute of Catalysis, Novosibirsk 630090, Russia

Информация о финансировании (1)

1 Российский научный фонд 20-73-10135

Реферат: This paper describes the chemical engineering aspects for the preparation of highly active and stable nanocomposite photocatalysts based on N-doped TiO2. The synthesis is performed using titanium oxysulfate as a low-cost inorganic precursor and ammonia as a precipitating agent, as well as a source of nitrogen. Mixing the reagents under a control of pH leads to an amorphous titanium oxide hydrate, which can be further successfully converted to nanocrystalline anatase TiO2 through calcination in air at an increased temperature. The as-prepared N-doped TiO2 provides the complete oxidation of volatile organic compounds both under UV and visible light, and the action spectrum of N-doped TiO2 correlates to its absorption spectrum. The key role of paramagnetic nitrogen species in the absorption of visible light and in the visible-light-activity of N-doped TiO2 is shown using the EPR technique. Surface modification of N-doped TiO2 with copper species prevents its intense deactivation under highly powerful radiation and results in a nanocomposite photocatalyst with enhanced activity and stability. The photocatalysts prepared under different conditions are discussed regarding the effects of their characteristics on photocatalytic activity under UV and visible light.
Библиографическая ссылка: Kovalevskiy N. , Svintsitskiy D. , Cherepanova S. , Yakushkin S. , Martyanov O. , Selishcheva S. , Gribov E. , Kozlov D. , Selishchev D.
Visible-Light-Active N-Doped TiO2 Photocatalysts: Synthesis from TiOSO4, Characterization, and Enhancement of Stability via Surface Modification
Nanomaterials. 2022. V.12. N23. 4146 :1-24. DOI: 10.3390/nano12234146 WOS Scopus РИНЦ CAPlus PMID OpenAlex
Даты:
Поступила в редакцию: 29 окт. 2022 г.
Принята к публикации: 21 нояб. 2022 г.
Опубликована online: 23 нояб. 2022 г.
Идентификаторы БД:
Web of science: WOS:000897303400001
Scopus: 2-s2.0-85143718435
РИНЦ: 50359403
Chemical Abstracts: 2022:3123244
PMID (PubMed): 36500767
OpenAlex: W4310036282
Цитирование в БД:
БД Цитирований
Scopus 18
Web of science 16
РИНЦ 14
OpenAlex 19
Альметрики: