Effect of TiO2 and ZnO Nanoparticles on Photocatalytic and Antimicrobial Activities of Silicate Coatings

Authors

  • L. Hochmannová SYNPO Co., Pardubice,
  • J. Vytřasová University of Pardubice

Abstract

Silicate paints containing photocatalytically active TiO2 and ZnO nanoparticles were formulated. The photocatalytic efficiency of coatings was evaluated as a change in absorbance of Orange II solutions. The agar plate method was used for evaluation of antimicrobial properties of coatings. The effectiveness of the coatings was demonstrated using Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus bacteria and Aspergillus niger and Penicillium chrysogenum fungi. A slightly better photocatalytic effect was found in the coatings containing TiO2 nanoparticles than in those with ZnO. The antimicrobial activity of coatings containing nano-TiO2 was negligible. The silicate coatings containing 7.5 vol.% of ZnO nanoparticles showed an excellent antimicrobial activity against all tested bacteria and fungi; they partly inhibited also the Penicillium chrysogenum growth. Statistically significant differences between the control coatings and those with ZnO nanoparticles were found using the Rank-sum test.

Published

2010-11-15

How to Cite

Hochmannová, L., & Vytřasová, J. (2010). Effect of TiO2 and ZnO Nanoparticles on Photocatalytic and Antimicrobial Activities of Silicate Coatings. Chemické Listy, 104(10). Retrieved from http://w.chemicke-listy.cz/ojs3/index.php/chemicke-listy/article/view/1242

Issue

Section

Articles