Abstract
The antimicrobial activity of fine particles of submicron size WO3 and RbTe1.5W0.5O6 in relation to the bacteria Escherichia coli and Staphylococcus aureus is studied. It is found that all the studied compounds cause a decrease in the survival of bacteria both in the dark and in the light. It is shown that a decrease in the size of RbTe1.5W0.5O6 particles enhances their antimicrobial effect. The action of light (source power 30 and 50 W) enhances the antimicrobial activity of the compounds under study, especially for RbTe1.5W0.5O6 with a smaller particle size, which indicates their photocatalytic activity. With an increase in the duration of exposure, the antimicrobial effect of the studied compounds increases. The ambiguity of the effect of light sources of different power on the bacteria is noted, which may be due to their physiological and biochemical characteristics.
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Funding
The study was financially supported by the Ministry of Education and Science of the Russian Federation (the basic part of the State Assignment, project 0729-2020-0053) using equipment of the New Materials and Resource-Saving Technologies Central Collective Use Center (N.I. Lobachevsky Nizhny Novgorod State University).
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Smirnov, V.F., Smirnova, O.N., Shishkin, A.Y. et al. Study of the Antimicrobial Activity of Submicron Particles of Metal Oxides Based on Tungsten Under Light and Dark Exposure Conditions. Nanotechnol Russia 17, 235–243 (2022). https://doi.org/10.1134/S2635167622020161
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DOI: https://doi.org/10.1134/S2635167622020161