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Information × Registration Number 0225U002378, (0120U102260) , R & D reports Title Development of photocatalytic nanocomposites for inactivation of viruses in the air popup.stage_title Розробка фотокаталiтичних нанокомпозитів для інактивації вірусів у повітрі Head Yevtushenko Arsenii I., Кандидат фізико-математичних наук Registration Date 06-03-2025 Organization Frantsevich Institute for Problems of Materials Science National Academy of Science of Ukraine popup.description1 The aim of the project is the development of ZnO-based nanocomposite materials doped with Ag, Au, Cu, Mg, etc., as well as the synthesis of TiO2-based composite materials doped with Ag and Au for development of photocatalysts for the inactivation of viruses in the air. popup.description2  The results of studies of the microstructure and photoluminescence of ZnO-Mg nanostructures (1÷10 wt.%) obtained by the APMOCVD method are presented. It is shown that the substrate temperature and magnesium concentration have a significant effect on the structure and morphology of magnesium-doped ZnO NCs. Quasi-ordered ZnO-Mg nanorods are formed at substrate temperatures not lower than 400°C. An increase in the magnesium content to 10 wt.% in ZnO-Mg NCs leads to an increase in the intensity of edge emission in the UV region of the spectrum and suppression of defect emission in the blue-green region of the spectrum. It is shown that magnesium in the cationic zinc sublattice acts as an isoelectronic impurity and leads to an improvement in crystal perfection and luminescence due to the gettering of defects present in zinc oxide. Studies of the photocatalytic activity of ZnO-Mg (1÷10 wt.%) NCs showed that the optimal magnesium content in ZnO-Mg NCs to achieve maximum photocatalytic activity is 5 wt. %. Studies of the virucidal effect of ZnO-Mg NCs showed a decrease in the titer of influenza A virus by 1.92 lg. It was established that TiO2, lanthanum and cerium oxides with a high silver content of 4-5% have a pronounced virucidal effect against the herpes simplex virus and completely inhibit the development of its cytopathic effect. When determining the infectious titers of viruses synthesized de novo, a decrease in herpes virus titers by 1 - 4 lg was noted, which indicates the high efficiency of doped cerium and lanthanum oxides. The results obtained indicate the ability of the studied nanostructures to destroy the lipid envelope of viruses, and therefore have a perspective regarding such viruses with a supercapsid as the SARS-Cov-2 strain. Product Description popup.authors Myroniuk Denys V. Yevtushenko Arsenii I. Zahornyi Maksym M. Viktor V. Strelchuk Zahorodnia Svitlana D. Tyshchenko Nadiia I. Petrosian Larysa I. Patsui Viktor I. Karpyna Vitalii A. Tomyla Tamara V. Lavrynenko Olena M. Lobunets Tetiana F. Myroniuk Liliia A. Poznii Anatolii P. Koriak Oksana S. Buhaieva Maryna E. popup.nrat_date 2025-03-06 Close