Pulsed Plasma-Chemical Modification of SiO2 Nanopowder by ZnxOy Nanoparticles / R. V. Sazonov, G. E. Kholodnaya, D. V. Ponomarev [et al.]

Set Level: International Journal of NanoscienceCoauthor: Sazonov, R. V., physicist, senior researcher of Tomsk Polytechnic University, candidate of physico-mathematical Sciences, 1984-, Roman Vladimirovich;Kholodnaya, G. E., electrophysicist, Associate Scientist of Tomsk Polytechnic University, candidate of technical Sciences, 1986-, Galina Evgenievna;Ponomarev, D. V., physicist, Senior researcher of Tomsk Polytechnic University, Candidate of technical sciences, 1981-, Denis Vladimirovich;Zhuravlev, M. V., physicist, Researcher of Tomsk Polytechnic University, Candidate of Technical Sciences, 1986-, Mikhail Valerievich;Pyatkov, I., Physicist, Research Engineer of Tomsk Polytechnic University, 1993-, Igor;Konusov, F. V., physicist, Lead Engineer of Tomsk Polytechnic University, Candidate of physical and mathematical sciences, 1958-, Fedor Valerievich;Lapteva, O. P., linguist, Interpreter of Tomsk Polytechnic University, 1979-, Olga Pavlovna;Gadirov, R. M., Ruslan MukhamedzhanovichLanguage: английский.Abstract: This work presents the results of pulsed plasma-chemical modification of silicon dioxide nanopowder with zinc oxide nanoparticles (ZnO@SiO2). The obtained ZnO@SiO2 powders were characterized by transmission electron microscopy (TEM) and X-ray phase analysis. The size of the synthesized particles was in the range of 20-100nm. The photocatalytic characteristics of ZnO@SiO2 were studied. When exposed to ultraviolet radiation, the methylene blue (MB) decomposes efficiently. Two samples characterized by the content of silicon tetrachloride in the initial mixture were synthesized. The band gap estimated from the absorption spectra calculated from the diffuse reflectance spectra for these samples was 2.4eV and 2.95eV for indirect transitions and 3.03eV and 3.24eV for direct allowed transitions..Bibliography: [References: 37 tit.].Audience: .Subject: электронный ресурс | труды учёных ТПУ | electron beam pulsed plasma-chemical method | electrospark method | zinc oxide | silicon oxide | photocatalyst | электронно-лучевые методы | плазмохимические методы | электроискровые методы | оксид цинка | оксид кремния | фотокатализаторы Online Resources:https://doi.org/10.1142/S0219581X21500058
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[References: 37 tit.]

This work presents the results of pulsed plasma-chemical modification of silicon dioxide nanopowder with zinc oxide nanoparticles (ZnO@SiO2). The obtained ZnO@SiO2 powders were characterized by transmission electron microscopy (TEM) and X-ray phase analysis. The size of the synthesized particles was in the range of 20-100nm. The photocatalytic characteristics of ZnO@SiO2 were studied. When exposed to ultraviolet radiation, the methylene blue (MB) decomposes efficiently. Two samples characterized by the content of silicon tetrachloride in the initial mixture were synthesized. The band gap estimated from the absorption spectra calculated from the diffuse reflectance spectra for these samples was 2.4eV and 2.95eV for indirect transitions and 3.03eV and 3.24eV for direct allowed transitions.

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