Abstract
Antimicrobial paints were based on the aqueous acrylic dispersion and various nanoparticles of zinc oxide and titanium dioxide. Antimicrobial ability and photoactivity were assumed in these paints. It was possible to observe the photoactivity thanks to change of organic dyes due to oxidative-reductive reaction. The best photocatalytic effect showed the coating containing the mixture of the first type of TiO2and nano-ZnO despite the fact that the first type of TiO2was not better in the photocatalytic test than the other types of TiO2. The agar dilution method was used to test antimicrobial ability. TheEscherichia coli,Pseudomonas aeruginosa,andStaphylococcus aureuswere chosen as test bacteria andPenicillium chrysogenumandAspergillus nigeras test molds. The antimicrobial effect of coatings with the mixture of the first type of TiO2and nano-ZnO was the best of all the tested samples.
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