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:
The anodized TiO2 ceramic film was post-treated by photoreduction and ion sputtering,respectively, to deposit platinum on the surface of the films. Surface morphology, the main elements ofthe films and platinum distribution on the film surface were investigated by scanning electron microscopyand energy dispersive spectroscopy. The phase composition of the films was examined by X-raydiffraction. The photocatalytic activity was compared through the effect of the films on photocatalytic(PC) degradation rate of the humic acid. The results showed that both films were composed of Pt5Ti3,rutile (R) TiO2 and anatase (A) TiO2, and the content of TiO2 (R) of the film prepared by photoreductionwas a little more than that of the film by ion sputtering. Compared with Pt on the Pt-TiO2 ceramic film byphotoreduction, Pt on the Pt-TiO2 film by ion sputtering dispersed more evenly and the grains were muchsmaller. Pt particulates in the film post-treated by ion sputtering were more strongly combined with thefilm than those by photoreduction. Besides, the PC degradation rate of humic acid by both Pt-TiO2 filmswere higher than that by TiO2 film, and Pt-TiO2 film by ion sputtering had higher catalytic activity andlonger using life than that by photoreduction
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.336-338.1939.pdf
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