Synthesis, Characterization and Visible-Light Photocatalytic Activity of Solid and TiO2-Supported Uranium Oxycompounds | Sciact - CRIS-system of Boreskov Institute of Catalysis

Synthesis, Characterization and Visible-Light Photocatalytic Activity of Solid and TiO2-Supported Uranium Oxycompounds Full article

Journal

Nanomaterials
, E-ISSN: 2079-4991

Output data

Year: 2021, Volume: 11, Number: 4, Article number : 1036, Pages count : 17 DOI: 10.3390/nano11041036

Tags

uranyl nitrate; titanium dioxide; photocatalysis; VOC oxidation; visible light; LED

Authors

Lyulyukin Mikhail ¹ , Filippov Tikhon ² , Cherepanova Svetlana ³ , Solovyeva Maria ¹ , Prosvirin Igor ⁴ , Bukhtiyarov Andrey ⁴ , Kozlov Denis ¹ , Selishchev Dmitry ¹

Affiliations

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

Funding (1)

Russian Science Foundation

20-73-10135

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).

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 ANCAN PMID OpenAlex

Full text from publisher

Submitted:	Mar 20, 2021
Accepted:	Apr 16, 2021
Published print:	Apr 19, 2021
Published online:	Apr 19, 2021

Web of science:	WOS:000643351600001
Scopus:	2-s2.0-85104463176
Elibrary:	46019196
Chemical Abstracts:	2021:1193507
Chemical Abstracts (print):	175:278971
PMID:	33921622
OpenAlex:	W3156636412

DB	Citing
Scopus	9
Web of science	9
Elibrary	6
OpenAlex	9