Publikace detail

Fotokatalytické a hygienické účinky fasádních nátěrů.

Autoři: Hochmannová Libuše | Vytřasová Jarmila

Rok: 2007

Druh publikace: článek ve sborníku

Název zdroje: Conference Papers CCT 2007

Název nakladatele: Univerzita Pardubice

Místo vydání: Pardubice

Strana od-do: 342-350

Tituly:

Jazyk	Název	Abstrakt	Klíčová slova
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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