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Fotokatalytické a hygienické účinky fasádních nátěrů.
Authors: Hochmannová Libuše | Vytřasová Jarmila
Year: 2007
Type of publication: článek ve sborníku
Name of source: Conference Papers CCT 2007
Publisher name: Univerzita Pardubice
Place: Pardubice
Page from-to: 342-350
Titles:
Language Name Abstract Keywords
cze Fotokatalytické a hygienické účinky fasádních nátěrů. Silicone and acrylate paints based on photocatalytic active nanooxides were formulated and evaluated. Photocatalytic efficiency of coatings was evaluated as an absorbance change of organic dye Orange II solution. Antimicrobial properties of coatings were evaluated using agar plate methods and Pseudomonas aeruginosa, Escherichia coli, Staphylococcus aureus, Penicillium chrysogenum and Aspergillus niger suspension as a test microorganisms. Membranes impregnated with tested coatings were deposited on the surface of agar. Then the plates were inoculated by a suspension of test microorganisms. The growth/no growth pattern of microorganisms was determined after incubation under optimal conditions for test microbes. The antimicrobial activity of coatings was evaluated by measuring the zone of inhibition against test microorganisms. The coatings contained nanoparticles of titanium dioxide and zinc oxide showed the antimicrobial activity against test microorganisms. Whereas coating with zinc oxides nanoparticles successfully inhibited the growth of both bacteria and fungi, the photocatalytic nanoparticles of titanium dioxide inhibited bacteria but not fungi (weak inhibition has been observed).
eng Photocatalytic and hygienic efficiency of coatings Silicone and acrylate paints based on photocatalytic active nanooxides were formulated and evaluated. Photocatalytic efficiency of coatings was evaluated as an absorbance change of organic dye Orange II solution. Antimicrobial properties of coatings were evaluated using agar plate methods and Pseudomonas aeruginosa, Escherichia coli, Staphylococcus aureus, Penicillium chrysogenum and Aspergillus niger suspension as a test microorganisms. Membranes impregnated with tested coatings were deposited on the surface of agar. Then the plates were inoculated by a suspension of test microorganisms. The growth/no growth pattern of microorganisms was determined after incubation under optimal conditions for test microbes. The antimicrobial activity of coatings was evaluated by measuring the zone of inhibition against test microorganisms. The coatings contained nanoparticles of titanium dioxide and zinc oxide showed the antimicrobial activity against test microorganisms. Whereas coating with zinc oxides nanoparticles successfully inhibited the growth of both bacteria and fungi, the photocatalytic nanoparticles of titanium dioxide inhibited bacteria but not fungi (weak inhibition has been observed). silicone and acrylate paints; antimicrobial coatings; photocatalytic effect

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