LED-light activated antibacterial surfaces using silver-modified TiOembedded in polymer matrix

Szabolcs Péter Tallósy, László Janovák, Judit Ménesi, Elisabeth Nagy, Ádám Juhász, Imre Dékány

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Silver functionalized TiOpoly(etyl-acrylate co methyl-methacrylate) nanohybrid films were proved to inactivate nosocomial bacteria. The films were prepared on glass plates by spray coating technique and their thickness were 1.48±0.1 μm. During photocatalysis, the films were illuminated with visible LED-light source (λ = 405 nm). The optical and photooxidation properties of prepared nanocomposite films were characterized by diffuse reflectance measurements and the photocatalytic properties were tested in ethanol photooxidation monitored by gas-chromatography experiments. The photocatalytic activity of the nanohybrid films were tested under visible light illumination against bacteria causing nosocomial infections, such as methicillin resistant Staphylococcus aureus, Enterococcus faecium, Pseudomonas aeruginosa and Acinetobacter baumannii. The investigation of the antibacterial activity of the silver functionalized TiOwas carried out by measuring the survival ratio of the original amount of the bacteria on the nutrient agar plate. To verify the photooxidation effect of the reactive films, parallel experiments were carried out without any light source. All of the investigated bacteria were inactivated on the surface of the nanohybrid films within 120 minutes of LED-light illumination.

Original languageEnglish
Pages (from-to)9-16
Number of pages8
JournalJournal of Advanced Oxidation Technologies
Volume17
Issue number1
Publication statusPublished - Jan 2014

Keywords

  • Antibacterial activity
  • LED light
  • Photocatalysis
  • Silver-modified TiONanoparticles

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

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