Abstract—
The antifungal activity of fine submicron-size particles of WO3 and RbTe1.5W0.5O6 against the spores and vegetative mycelium of Aspergillus niger and Penicillium chrysogenum fungi is studied. It is found that the studied compounds WO3 and RbTe1.5W0.5O6 caused a decrease in the survival rate of microorganisms in the dark. Antifungal activity increased against both the spores and vegetative mycelium of fungi under light exposure with a power of 30 and 50 W with a radiation-flux density of 325.5 and 524 W/m2, respectively, which indicates their photocatalytic activity. It is noted that the antifungal activity of RbTe1.5W0.5O6 both under light and dark conditions on the spores and vegetative mycelium of fungi is higher compared to WO3. The antifungal effect of the compounds under study increased with an increase in the duration of exposure and the intensity of illumination.
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ACKNOWLEDGMENTS
The work was performed using the equipment of Common Use Centre “New Materials and Resource-saving Technologies” of the Research Institute for Chemistry of Lobachevsky State University of Nizhny Novgorod (Russia).
Funding
The work was supported by the Ministry of Education and Science of the Russian Federation (the basic part of the State assignment, project no. 0729-2020-0053).
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Smirnov, V.F., Smirnova, O.N., Shishkin, A.Y. et al. Effect of Light on the Antifungal Activity of Submicron Particles Based on Tungsten Oxide. Nanotechnol Russia 17, 444–456 (2022). https://doi.org/10.1134/S263516762203017X
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DOI: https://doi.org/10.1134/S263516762203017X