Open AccessPhotoinduced bactericidal activity against Pseudomonas aeruginosa by TiO 2 based thin films
Author(s) -
AmézagaMadrid P,
NevárezMoorillón G.V,
OrrantiaBorunda E,
MikiYoshida M
Publication year - 2002
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1111/j.1574-6968.2002.tb11222.x
Subject(s) - pseudomonas aeruginosa , thin film , scanning electron microscope , bacteria , doping , pseudomonadaceae , irradiation , quantum yield , chemistry , materials science , pseudomonas , pyrolysis , nuclear chemistry , analytical chemistry (journal) , photochemistry , nanotechnology , biology , optics , optoelectronics , organic chemistry , physics , composite material , genetics , nuclear physics , fluorescence
The photoinduced bactericidal capacity of TiO 2 based films was evaluated, using as model organism Pseudomonas aeruginosa . Thin films were obtained by spray pyrolysis; they included undoped, Cu doped, and Al doped TiO 2 . Scanning electron microscopy was used to observe the final effect of the irradiated films upon the bacteria. Depending on the composition and characteristics of the films, quantitative experiments show that bacterial inhibition varies between 28 and 96%. The order of magnitude of the average quantum yield of the films was determined between 10 −9 and 10 −11 inhibited bacterial per photon.