ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Ag+-doped TiO2 films on stainless steel were prepared by a sol-gel method and theirmicrostructures and compositions were studied with X-Ray Diffractometer, Scanning ElectronMicroscope (SEM) and X-ray Photoelectron Spectroscopy. It was shown that Fe atoms in untreatedstainless steel react with Ag+ in the TiO2 film and form FeTiO3, which has an acicular crystal form underSEM observation. As a result, Ag+ in the film is reduced to the silver atom, which degrades theantibacterial property of the film. However, after an oxidization of the substrate, a layer of ferric oxide isformed, which reacts with Fe atoms that would otherwise react with and reduce Ag+, and then formsFeTiO3. Thus, the penetration of Fe atoms is stopped and Ag+ in the anatase-structure TiO2 film isprotected from the reduction, which enhanced antibacterial property of the film
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.336-338.1559.pdf
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