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dc.contributor.authorKravtsov, A. A.-
dc.contributor.authorКравцов, А. А.-
dc.contributor.authorBlinov, A. V.-
dc.contributor.authorБлинов, А. В.-
dc.contributor.authorNagdalian, A. A.-
dc.contributor.authorНагдалян, А. А.-
dc.contributor.authorGvozdenko, A. A.-
dc.contributor.authorГвозденко, А. А.-
dc.contributor.authorGolik, A. B.-
dc.contributor.authorГолик, А. Б.-
dc.contributor.authorPirogov, M. A.-
dc.contributor.authorПирогов, М. А.-
dc.contributor.authorKolodkin, M. A.-
dc.contributor.authorКолодкин, М. А.-
dc.identifier.citationKravtsov, A.A., Blinov, A.V., Nagdalian, A.A., Gvozdenko, A.A., Golik, A.B., Pirogov, M.A., Kolodkin, M.A., Alharbi, N.S., Kadaikunnan, S., Thiruvengadam, M., Shariati, M.A. Acid-Base and Photocatalytic Properties of the CeO2-Ag Nanocomposites // Micromachines. - 2023. - 14(3), 694. - DOI: 10.3390/mi14030694ru
dc.description.abstractIn this work, CeO2 nanoparticles, as well as CeO2 nanocomposites with plasmonic silver nanoparticles, were synthesized using a simple sol-gel process. The concentration of silver in the composites varied from 0.031–0.25 wt%. Cerium hydroxide dried gel was calcined at temperatures from 125 to 800 ◦C to obtain CeO2. It was shown that, at an annealing temperature of 650 ◦C, single- phase CeO2 nanopowders with an average particle size in the range of 10–20 nm can be obtained. The study of acid-base properties showed that with an increase in the calcination temperature from 500 to 650 ◦C, the concentration of active centers with pKa 9.4 and 6.4 sharply increases. An analysis of the acid-base properties of CeO2-Ag nanocomposites showed that with an increase in the silver concentration, the concentration of centers with pKa 4.1 decreases, and the number of active centers with pKa 7.4 increases. In a model experiment on dye photodegradation, it was shown that the resulting CeO2 and CeO2-Ag nanopowders have photocatalytic activity. CeO2-Ag nanocomposites, regardless of the silver concentration, demonstrated better photocatalytic activity than pure nanosized
dc.subjectPhotocatalytic propertiesru
dc.subjectAcid-base propertiesru
dc.titleAcid-Base and Photocatalytic Properties of the CeO2-Ag Nanocompositesru
vkr.instФизико-технический факультетru
vkr.instФакультет пищевой инженерии и биотехнологийru
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