Investigation of the antibacterial effects of silver-modified TiO2 and ZnO plasmonic photocatalysts embedded in polymer thin films

Szabolcs Péter Tallósy, László Janovák, Judit Ménesi, E. Nagy, Ádám Juhász, László Balázs, István Deme, Norbert Buzás, I. Dékány

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Nanosilver-modified TiO2 and ZnO photocatalysts were studied against methicillin-resistant Staphylococcus aureus on the surface and against naturally occurring airborne microorganisms. The photocatalysts/polymer nanohybrid films were prepared by spray coating technique on the surface of glass plates and on the inner surface of the reactive light source. The photoreactive surfaces were activated with visible light emitting LED light at λ = 405 nm. The optical properties of the prepared photocatalyst/polymer nanohybrid films were characterized by diffuse reflectance measurements. The photocatalytic properties were verified with the degradation of ethanol by gas chromatography measurements. The destruction of the bacterial cell wall component was examined with transmission electron microscope. The antibacterial effect of the photocatalyst/polymer nanohybrid films was tested with different methods and with the associated standard ISO 27447:2009. With the photoreactive coatings, an extensive disinfectant film was developed and successfully prepared. The cell wall component of S. aureus was degraded after 1 h of illumination. The antibacterial effect of the nanohybrid films has been proven by measuring the decrease of the number of methicillin-resistant S. aureus on the surface and in the air as the function of illumination time. The photocatalyst/polymer nanohybrid films could inactivate 99.9 % of the investigated bacteria on different thin films after 2 h of illumination with visible light source. The reactive light source with the inner-coated photocatalyst could kill 96 % of naturally occurring airborne microorganisms after 48 h of visible light illumination in indoor air sample. The TEM results and the microbiological measurements were completed with toxicity tests carried out with Vibrio fischeri bioluminescence bacterium.

Original languageEnglish
Pages (from-to)11155-11167
Number of pages13
JournalEnvironmental Science and Pollution Research
Volume21
Issue number19
DOIs
Publication statusPublished - Aug 1 2014

Fingerprint

Photocatalysts
Silver
Polymer films
silver
Polymers
polymer
Lighting
Light
Thin films
Light sources
Methicillin
Cellular Structures
Methicillin-Resistant Staphylococcus aureus
Microorganisms
Cell Wall
Bacteria
Air
Aliivibrio fischeri
Cells
coating

Keywords

  • Antibacterial activity
  • Disinfectant system
  • Methicillin-resistant Staphylococcus aureus
  • Nanohybrid films
  • Photocatalyst
  • Reactive lamp
  • Silver-modified TiO<inf>2</inf>

ASJC Scopus subject areas

  • Environmental Chemistry
  • Health, Toxicology and Mutagenesis
  • Pollution
  • Medicine(all)

Cite this

Investigation of the antibacterial effects of silver-modified TiO2 and ZnO plasmonic photocatalysts embedded in polymer thin films. / Tallósy, Szabolcs Péter; Janovák, László; Ménesi, Judit; Nagy, E.; Juhász, Ádám; Balázs, László; Deme, István; Buzás, Norbert; Dékány, I.

In: Environmental Science and Pollution Research, Vol. 21, No. 19, 01.08.2014, p. 11155-11167.

Research output: Contribution to journalArticle

Tallósy, Szabolcs Péter ; Janovák, László ; Ménesi, Judit ; Nagy, E. ; Juhász, Ádám ; Balázs, László ; Deme, István ; Buzás, Norbert ; Dékány, I. / Investigation of the antibacterial effects of silver-modified TiO2 and ZnO plasmonic photocatalysts embedded in polymer thin films. In: Environmental Science and Pollution Research. 2014 ; Vol. 21, No. 19. pp. 11155-11167.
@article{c4b042f446f742599f146751df75c2eb,
title = "Investigation of the antibacterial effects of silver-modified TiO2 and ZnO plasmonic photocatalysts embedded in polymer thin films",
abstract = "Nanosilver-modified TiO2 and ZnO photocatalysts were studied against methicillin-resistant Staphylococcus aureus on the surface and against naturally occurring airborne microorganisms. The photocatalysts/polymer nanohybrid films were prepared by spray coating technique on the surface of glass plates and on the inner surface of the reactive light source. The photoreactive surfaces were activated with visible light emitting LED light at λ = 405 nm. The optical properties of the prepared photocatalyst/polymer nanohybrid films were characterized by diffuse reflectance measurements. The photocatalytic properties were verified with the degradation of ethanol by gas chromatography measurements. The destruction of the bacterial cell wall component was examined with transmission electron microscope. The antibacterial effect of the photocatalyst/polymer nanohybrid films was tested with different methods and with the associated standard ISO 27447:2009. With the photoreactive coatings, an extensive disinfectant film was developed and successfully prepared. The cell wall component of S. aureus was degraded after 1 h of illumination. The antibacterial effect of the nanohybrid films has been proven by measuring the decrease of the number of methicillin-resistant S. aureus on the surface and in the air as the function of illumination time. The photocatalyst/polymer nanohybrid films could inactivate 99.9 {\%} of the investigated bacteria on different thin films after 2 h of illumination with visible light source. The reactive light source with the inner-coated photocatalyst could kill 96 {\%} of naturally occurring airborne microorganisms after 48 h of visible light illumination in indoor air sample. The TEM results and the microbiological measurements were completed with toxicity tests carried out with Vibrio fischeri bioluminescence bacterium.",
keywords = "Antibacterial activity, Disinfectant system, Methicillin-resistant Staphylococcus aureus, Nanohybrid films, Photocatalyst, Reactive lamp, Silver-modified TiO<inf>2</inf>",
author = "Tall{\'o}sy, {Szabolcs P{\'e}ter} and L{\'a}szl{\'o} Janov{\'a}k and Judit M{\'e}nesi and E. Nagy and {\'A}d{\'a}m Juh{\'a}sz and L{\'a}szl{\'o} Bal{\'a}zs and Istv{\'a}n Deme and Norbert Buz{\'a}s and I. D{\'e}k{\'a}ny",
year = "2014",
month = "8",
day = "1",
doi = "10.1007/s11356-014-2568-6",
language = "English",
volume = "21",
pages = "11155--11167",
journal = "Environmental Science and Pollution Research",
issn = "0944-1344",
publisher = "Springer Science + Business Media",
number = "19",

}

TY - JOUR

T1 - Investigation of the antibacterial effects of silver-modified TiO2 and ZnO plasmonic photocatalysts embedded in polymer thin films

AU - Tallósy, Szabolcs Péter

AU - Janovák, László

AU - Ménesi, Judit

AU - Nagy, E.

AU - Juhász, Ádám

AU - Balázs, László

AU - Deme, István

AU - Buzás, Norbert

AU - Dékány, I.

PY - 2014/8/1

Y1 - 2014/8/1

N2 - Nanosilver-modified TiO2 and ZnO photocatalysts were studied against methicillin-resistant Staphylococcus aureus on the surface and against naturally occurring airborne microorganisms. The photocatalysts/polymer nanohybrid films were prepared by spray coating technique on the surface of glass plates and on the inner surface of the reactive light source. The photoreactive surfaces were activated with visible light emitting LED light at λ = 405 nm. The optical properties of the prepared photocatalyst/polymer nanohybrid films were characterized by diffuse reflectance measurements. The photocatalytic properties were verified with the degradation of ethanol by gas chromatography measurements. The destruction of the bacterial cell wall component was examined with transmission electron microscope. The antibacterial effect of the photocatalyst/polymer nanohybrid films was tested with different methods and with the associated standard ISO 27447:2009. With the photoreactive coatings, an extensive disinfectant film was developed and successfully prepared. The cell wall component of S. aureus was degraded after 1 h of illumination. The antibacterial effect of the nanohybrid films has been proven by measuring the decrease of the number of methicillin-resistant S. aureus on the surface and in the air as the function of illumination time. The photocatalyst/polymer nanohybrid films could inactivate 99.9 % of the investigated bacteria on different thin films after 2 h of illumination with visible light source. The reactive light source with the inner-coated photocatalyst could kill 96 % of naturally occurring airborne microorganisms after 48 h of visible light illumination in indoor air sample. The TEM results and the microbiological measurements were completed with toxicity tests carried out with Vibrio fischeri bioluminescence bacterium.

AB - Nanosilver-modified TiO2 and ZnO photocatalysts were studied against methicillin-resistant Staphylococcus aureus on the surface and against naturally occurring airborne microorganisms. The photocatalysts/polymer nanohybrid films were prepared by spray coating technique on the surface of glass plates and on the inner surface of the reactive light source. The photoreactive surfaces were activated with visible light emitting LED light at λ = 405 nm. The optical properties of the prepared photocatalyst/polymer nanohybrid films were characterized by diffuse reflectance measurements. The photocatalytic properties were verified with the degradation of ethanol by gas chromatography measurements. The destruction of the bacterial cell wall component was examined with transmission electron microscope. The antibacterial effect of the photocatalyst/polymer nanohybrid films was tested with different methods and with the associated standard ISO 27447:2009. With the photoreactive coatings, an extensive disinfectant film was developed and successfully prepared. The cell wall component of S. aureus was degraded after 1 h of illumination. The antibacterial effect of the nanohybrid films has been proven by measuring the decrease of the number of methicillin-resistant S. aureus on the surface and in the air as the function of illumination time. The photocatalyst/polymer nanohybrid films could inactivate 99.9 % of the investigated bacteria on different thin films after 2 h of illumination with visible light source. The reactive light source with the inner-coated photocatalyst could kill 96 % of naturally occurring airborne microorganisms after 48 h of visible light illumination in indoor air sample. The TEM results and the microbiological measurements were completed with toxicity tests carried out with Vibrio fischeri bioluminescence bacterium.

KW - Antibacterial activity

KW - Disinfectant system

KW - Methicillin-resistant Staphylococcus aureus

KW - Nanohybrid films

KW - Photocatalyst

KW - Reactive lamp

KW - Silver-modified TiO<inf>2</inf>

UR - http://www.scopus.com/inward/record.url?scp=84907806451&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84907806451&partnerID=8YFLogxK

U2 - 10.1007/s11356-014-2568-6

DO - 10.1007/s11356-014-2568-6

M3 - Article

VL - 21

SP - 11155

EP - 11167

JO - Environmental Science and Pollution Research

JF - Environmental Science and Pollution Research

SN - 0944-1344

IS - 19

ER -