Real Time,in situ Observation of the Photocatalytic Destruction of Saccharomyces cerevisiae Cells by Palladium-modified Nitrogen-doped Titanium Oxide Thin Film

Palladium-modified nitrogen-doped titanium oxide(TiON/PdO) thin film was synthesized by the ion-beamassisted deposition technique,which enabled a heavy nitrogen doping and the subsequent light absorption extension to ~700 nm for a better usage of the solar spectrum.Based on TiON/PdO thin film and a...

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Bibliographic Details
Published in:Journal of materials science & technology 2015-01, Vol.31 (1), p.48-54
Main Authors: Zhang, Jingtao, Li, Qi, Li, Ronghui, Shang, Jian Ku
Format: Article
Language:English
Subjects:
assisted
deposition(IBAD)
TiON/PdO
Destruction
Ion-beam
Ion-beam assisted deposition (IBAD)
Micro-reaction chamber
Phase contrast
Photocatalysis
Photocatalytic destruction
Real time
Saccharomyces cerevisiae
thin
Thin films
TiON/PdO thin film
Titanium dioxide
Titanium oxides
Visible-light
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Summary:Palladium-modified nitrogen-doped titanium oxide(TiON/PdO) thin film was synthesized by the ion-beamassisted deposition technique,which enabled a heavy nitrogen doping and the subsequent light absorption extension to ~700 nm for a better usage of the solar spectrum.Based on TiON/PdO thin film and a phase contrast microscope,a micro-reaction chamber was developed,which allowed the simultaneous optical excitation of the photocatalytic thin film and the phase contrast image observation of cells in it.The real time,in situ observation of the photocatalytic destruction of Saccharomyces cerevisiae(S.cerevisiae),an essential eukaryotic unicellular model of living cells,was conducted with this new observation technique,which demonstrated clearly that the photocatalytic destruction effect was much stronger than the photodamage effect caused by the visible light irradiation alone in the disinfection process.
ISSN:1005-0302
1941-1162
DOI:10.1016/j.jmst.2014.08.003