ISSN:
1662-9752
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:
Sr2Ta2O7, a layered perovskite compound, has been reported to possess most excellentphotocatalytic properties among the layered perovskite materials. Recently, we have successfullydemonstrated that Ba5Ta4O15 that was prepared under Ta rich atmosphere has high photocatalyticperformance as well as Sr2Ta2O7. In this study, several amount of Ba was doped into Sr2Ta2O7, andthe photocatalyst samples with a mol ratio of Sr: Ba: Ta = (1-x): x: 1 were prepared by thepolymerized complex method[removed info] to investigate the effect of Ba substitution for the Sr site onphotocatalytic activity. The maximum photocatalytic performance was obtained for x = 0.2 near thesolid solubility limit, which is three times as high as that of undoped Sr2Ta2O7 and is in the highestlevel in a series of tantalum photocatalysts reported so far. The increase of photocatalytic activitywould be caused by crystal distortion due to doping of Ba ion
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/14/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.534-536.1481.pdf
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