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Photoelectrochemical and photocatalytic properties of mesoporous TiO 2 films modified with silver and gold nanoparticles
Author(s) -
Smirnova N.,
Vorobets V.,
Linnik O.,
Manuilov E.,
Kolbasov G.,
Eremenko A.
Publication year - 2010
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.3237
Subject(s) - mesoporous material , photocatalysis , materials science , photocurrent , photoelectrochemistry , heterojunction , nanoparticle , chemical engineering , nanocomposite , nanotechnology , electrochemistry , inorganic chemistry , nuclear chemistry , electrode , chemistry , catalysis , optoelectronics , biochemistry , engineering
TiO 2 and Zn 2+ /TiO 2 functional coatings doped with Ag or Au nanoparticles were prepared by photo‐ or thermoreduction of metal ions introduced into bulk or adsorbed on the film surface. TiO 2 and Zn 2+ /TiO 2 films with the Ag or Au nanoparticles (MNPs) distributed in the matrix and on the surface were characterized by XRD, TEM and UV‐Vis spectroscopy. Direct photoelectrochemical investigations of the M/TiO 2 and M/Zn 2+ /TiO 2 heterojunctions showed the cathodic shift of the flatband potential position and the increase of photocurrent quantum yield in comparison with unmodified TiO 2 electrodes. Photocatalytic activity of synthesized films estimated in the process of degradation of the antibiotic tetracycline hydrochloride coincides with photoelectrochemical data. Copyright © 2010 John Wiley & Sons, Ltd.