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Skripkin E, Podurets A, Kolokolov D, Emelyanova M, Cherezova P, Navolotskaya D, Ermakov S, Shishov A, Bulatov A, Bobrysheva N, Osmolowsky M, Voznesenskiy M, Osmolovskaya O. Fast and ecofriendly triple sulfonamides mixture utilization using UV irradiation and spherical SnO 2 nanoparticles with controllable parameters and antibacterial activity. CHEMOSPHERE 2024; 349:140981. [PMID: 38114025 DOI: 10.1016/j.chemosphere.2023.140981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 12/13/2023] [Accepted: 12/14/2023] [Indexed: 12/21/2023]
Abstract
One of the solutions for the growing problem of water purification is photocatalytic degradation of the pollutants. Semiconductor nanoparticles are widely under study as a promising photocatalyst for this purpose. However, there is still lack of understanding of the relation between properties of nanoparticles, in their turn related with synthesis conditions, and photocatalytic efficiency, as well as of the other factors influencing the process. For the first time, a possibility to regulate photocatalytic activity of SnO2 nanoparticles under UV light via regulation of structural parameters is shown. A method for obtaining spherical nanoparticles with different parameters was developed. Obtained nanoparticles were fully characterized. Special attention was paid to the study of oxygen vacancies. With the help of quantum computational methods, it was shown, that the concentration of vacancies is around 1 per 32 tin atoms. Obtained data on oxygen vacancies were further used for the evaluation of pollutant-nanoparticle surface interaction to get closer to the calculations of real systems. On the example of methylene blue, it was shown that the greater is the amount of oxygen vacancies and the lower the amount of defects, the higher photocatalytic activity. The obtained dependence is confirmed by the fact that the photoresponse increases with a decrease of amount of defects in the sample. Degradation kinetics of sulfonamides mixture was studied, and its dependence on active complex formation was shown based on the quantum chemical calculation data. Degradation of antibiotics in water from Neva River reached more than 95% in 35 min, which indicates that developed photocatalyst efficiency is not affected by pollutants contained in open water in the centre of the metropolis. It was shown, that the use of nanoparticles allows to speed up the process of bacteria destruction under UV light, which indicates the antibacterial activity of obtained nanoparticles.
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Affiliation(s)
- Evgenii Skripkin
- Institute of Chemistry, Saint Petersburg University, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia
| | - Anastasiia Podurets
- Institute of Chemistry, Saint Petersburg University, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia.
| | - Daniil Kolokolov
- Institute of Chemistry, Saint Petersburg University, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia
| | - Maria Emelyanova
- Institute of Chemistry, Saint Petersburg University, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia
| | - Polina Cherezova
- Institute of Chemistry, Saint Petersburg University, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia
| | - Daria Navolotskaya
- Institute of Chemistry, Saint Petersburg University, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia
| | - Sergey Ermakov
- Institute of Chemistry, Saint Petersburg University, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia
| | - Andrey Shishov
- Institute of Chemistry, Saint Petersburg University, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia
| | - Andrey Bulatov
- Institute of Chemistry, Saint Petersburg University, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia
| | - Natalia Bobrysheva
- Institute of Chemistry, Saint Petersburg University, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia
| | - Mikhail Osmolowsky
- Institute of Chemistry, Saint Petersburg University, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia
| | - Mikhail Voznesenskiy
- Institute of Chemistry, Saint Petersburg University, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia
| | - Olga Osmolovskaya
- Institute of Chemistry, Saint Petersburg University, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia
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Nanostructure Sn/C Composite High-Performance Negative Electrode for Lithium Storage. Molecules 2022; 27:molecules27134083. [PMID: 35807325 PMCID: PMC9268231 DOI: 10.3390/molecules27134083] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 06/18/2022] [Accepted: 06/22/2022] [Indexed: 02/01/2023] Open
Abstract
Tin-based nanocomposite materials embedded in carbon frameworks can be used as effective negative electrode materials for lithium-ion batteries (LIBs), owing to their high theoretical capacities with stable cycle performance. In this work, a low-cost and productive facile hydrothermal method was employed for the preparation of a Sn/C nanocomposite, in which Sn particles (sized in nanometers) were uniformly dispersed in the conductive carbon matrix. The as-prepared Sn/C nanocomposite displayed a considerable reversible capacity of 877 mAhg−1 at 0.1 Ag−1 with a high first cycle charge/discharge coulombic efficiency of about 77%, and showed 668 mAh/g even at a relatively high current density of 0.5 Ag−1 after 100 cycles. Furthermore, excellent rate capability performance was achieved for 806, 697, 630, 516, and 354 mAhg−1 at current densities 0.1, 0.25, 0.5, 0.75, and 1 Ag−1, respectively. This outstanding and significantly improved electrochemical performance is attributed to the good distribution of Sn nanoparticles in the carbon framework, which helped to produce Sn/C nanocomposite next-generation negative electrodes for lithium-ion storage.
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