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Photocatalytic Effect of TiO 2 Films on Viruses and Bacteria
Author(s) -
Hajkova Pavlina,
Spatenka Petr,
Horsky Jan,
Horska Irena,
Kolouch Ales
Publication year - 2007
Publication title -
plasma processes and polymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 74
eISSN - 1612-8869
pISSN - 1612-8850
DOI - 10.1002/ppap.200731007
Subject(s) - photocatalysis , bacteria , materials science , nanotechnology , microbiology and biotechnology , chemical engineering , chemistry , biology , engineering , catalysis , organic chemistry , genetics
This paper deals with photocatalytic decomposition of organic matter and antibacterial and antiviral effect of titanium dioxide (TiO 2 ) thin films. The TiO 2 films were deposited on glass substrates by plasma enhanced chemical vapor deposition (PECVD) in a vacuum reactor with radio frequency (RF) low temperature oxygen plasma discharge using titanium isopropoxide (TTIP) as a precursor. The depositions were performed with substrates preheated from 20 to 350 °C and with a systematical change of deposition conditions. The speed of photocatalytic decomposition of the model organic matter acid orange 7 (C 16 H 11 N 2 NaO 4 S), bacteria Escherichia coli and viruses HSV‐1 (Herpes simplex virus) were evaluated and some clues on the destruction mechanism are discussed.