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 SM ISO690:2012PRONIN, Igor, SIGAEV, Alexander P., KOMOLOV, Alexey, ZHIZHIN, Evgeny, KARMANOV, Andrey, YAKUSHOVA, Nadejda, KYASHKIN, Vladimir, NISHCHEV, Konstantin, SYSOEV, Victor, GOEL, Sanket, AMREEN, Khairunnisa, K, Ramya, KOROTCHENKOV, Ghenadii. Effects of Plasma Treatment on the Surface and Photocatalytic Properties of Nanostructured SnO2–SiO2 Films. In: Materials, 2023, vol. 16, pp. 1-14. ISSN 1996-1944. DOI: https://doi.org/10.3390/ma16145030 |
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  Materials |
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| Volumul 16 / 2023 / ISSN 1996-1944 | |
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| DOI:https://doi.org/10.3390/ma16145030 | |
| Pag. 1-14 | |
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In this work, we study the effects of treating nanostructured SnO2–SiO2 films derived by a sol-gel method with nitrogen and oxygen plasma. The structural and chemical properties of the films are closely investigated. To quantify surface site activity in the films following treatment, we employed a photocatalytic UV degradation test with brilliant green. Using X-ray photoelectron spectroscopy, it was found that treatment with oxygen plasma led to a high deviation in the stoichiometry of the SnO2 surface and even the appearance of a tin monoxide phase. These samples also exhibited a maximum photocatalytic activity. In contrast, treatment with nitrogen plasma did not lead to any noticeable changes in the material. However, increasing the power of the plasma source from 250 W to 500 W led to the appearance of an SnO fraction on the surface and a reduction in the photocatalytic activity. In general, all the types of plasma treatment tested led to amorphization in the SnO2–SiO2 samples. |
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| Cuvinte-cheie plasma treatment, sol-gel, Tin dioxide, X-ray photoelectron spectroscopy |
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