Study of the photocatalytic antimicrobial activity of nanocomposites based on TiO$_{2}$–Al$_{2}$O$_{3}$ under the action of LED radiation (405 nm) on staphylococci

The photocatalytic activity of nanocomposites based on $\theta$-modification of aluminum oxide Al$_{2}$O$_{3}$ with different TiO$_2$ content for heterogeneous photocatalysis and biodegradation of pathogenic microorganisms under the action of LED radiation with a wavelength of 405 nm has been studied. It was found that all the investigated nanocomposites have photocatalytic activity. The maximum antibacterial efficiency of composites with a TiO$_2$ content of 8 wt% (reduction of CFU of Staphylococcus aureus 209 P to 86%), which allows us to recommend this nanomaterial as a promising antimicrobial coating.