Detail publikačního výsledku
The Study of TiO2 Thin Films Photocatalytic Degradation of Yeast and Dye Pollutants
CHOMOUCKÁ, J.; DRBOHLAVOVÁ, J.; DZIK, P.; VESELÁ, M.; VESELÝ, M.
Original Title
The Study of TiO2 Thin Films Photocatalytic Degradation of Yeast and Dye Pollutants
English Title
The Study of TiO2 Thin Films Photocatalytic Degradation of Yeast and Dye Pollutants
Type
Peer-reviewed article not indexed in WoS or Scopus
Original Abstract
The antimicrobial properties of TiO2 thin films were tested on photocatalytic killing of yeasts Candida tropicalis and Candida albicans. Generally, Candida is the most common cause of opportunistic mycoses (Candidiasis) worldwide. The antimicrobial effect of photocatalysis with TiO2 could be due to the presence of reactive oxygen species (ROS), such as superoxide (O2o-), hydrogen peroxide (H2O2), and hydroxyl radical (HOo), generated either by illuminated TiO2 or by the illumination (mainly UV) of the cells. TiO2 layers were immobilised by dip-coating method on soda-lime glass plates using sol-gel method with titanium tetraisopropoxide precursor in ethanol. The dependence of Candida tropicalis and Candida albicans survival ratio on irradiation time was determined by epifluorescent microscopy using Acridine Orange dye. The influence of TiO2 layer number on the photocatalytic oxidation 2,6-dichloindophenol was also studied in a desk reactor. The concentration decrease of 2,6-DCIP was evaluated spectrofotometrically.
English abstract
The antimicrobial properties of TiO2 thin films were tested on photocatalytic killing of yeasts Candida tropicalis and Candida albicans. Generally, Candida is the most common cause of opportunistic mycoses (Candidiasis) worldwide. The antimicrobial effect of photocatalysis with TiO2 could be due to the presence of reactive oxygen species (ROS), such as superoxide (O2o-), hydrogen peroxide (H2O2), and hydroxyl radical (HOo), generated either by illuminated TiO2 or by the illumination (mainly UV) of the cells. TiO2 layers were immobilised by dip-coating method on soda-lime glass plates using sol-gel method with titanium tetraisopropoxide precursor in ethanol. The dependence of Candida tropicalis and Candida albicans survival ratio on irradiation time was determined by epifluorescent microscopy using Acridine Orange dye. The influence of TiO2 layer number on the photocatalytic oxidation 2,6-dichloindophenol was also studied in a desk reactor. The concentration decrease of 2,6-DCIP was evaluated spectrofotometrically.
Keywords
titanium dioxide, photocatalytic killing
Key words in English
titanium dioxide, photocatalytic killing
Authors
CHOMOUCKÁ, J.; DRBOHLAVOVÁ, J.; DZIK, P.; VESELÁ, M.; VESELÝ, M.
RIV year
2010
Released
09.09.2008
Publisher
ČSCH
Location
Praha
ISBN
1213-7103
Periodical
CHEMICKE LISTY
Volume
102
Number
15
State
Czech Republic
Pages from
s1037
Pages to
s1038
Pages count
2
URL
Full text in the Digital Library