Inactivation of bacteria G(+)-S. aureus and G(-)-E. coli by phototoxic polythiophene incorporated in ZSM-5 zeolite.
A new heterogeneous photocatalyst was prepared by oxidative polymerization of the thiophene with ferric chloride in the ZSM-5 zeolite type. The synthesized polythiophene absorbs radiation in the visible range of the electromagnetic spectrum and by illumination with visible light generates reactive oxygen species (ROS) in water medium. During illumination reactive hydroxyl radical was detected by the spin trapping EPR method. Efficiency of the photocatalyst was tested on the killing of Gram-positive bacteria Staphylococcus aureus and Gram negative bacteria Escherichia coli.
Cík
Gabriel
G
Department of Environmental Engineering, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovak Republic. gabriel.cik@stuba.sk
Priesolová
Sona
S
Bujdáková
Helena
H
Sersen
Frantisek
F
Potheöová
Timea
T
Kristín
Jozef
J
D000900:Anti-Bacterial Agents / Q000494:pharmacology; D002384:Catalysis; D002712:Chlorides; D003497:Cyclic N-Oxides / Q000737:chemistry; D004578:Electron Spin Resonance Spectroscopy; D004926:Escherichia coli / Q000187:drug effects*; D005290:Ferric Compounds / Q000737:chemistry; D010777:Photochemistry / Q000379:methods; D011108:Polymers / Q000737:chemistry / Q000494:pharmacology*; D017382:Reactive Oxygen Species / Q000737:chemistry; D013211:Staphylococcus aureus / Q000187:drug effects*; D013876:Thiophenes / Q000737:chemistry / Q000494:pharmacology*; D018508:Water Purification / Q000379:methods; D017641:Zeolites / Q000737:chemistry*
D000900:Anti-Bacterial Agents; D002712:Chlorides; D003497:Cyclic N-Oxides; D005290:Ferric Compounds; D011108:Polymers; D017382:Reactive Oxygen Species; D013876:Thiophenes; D017641:Zeolites; C066730:polythiophene; C017245:5,5-dimethyl-1-pyrroline-1-oxide; C024555:ferric chloride