4.8 Article

The relationship between photocatalytic activity and crystal structure in strontium tantalates

Journal

JOURNAL OF CATALYSIS
Volume 232, Issue 1, Pages 102-107

Publisher

ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcat.2005.02.021

Keywords

polymerizable complex method; photocatalytic water splitting; SrTaO system

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Three compounds, SrTa2O6, Sr4Ta2O9, and Sr5Ta4O15, were synthesized by a polymerizable complex method. Their photocatalytic activities for water splitting into H-2 and O-2 were tested and compared against previously published results for Sr2Ta2O7. It was found that the efficiency of the catalysts decreases in the following order: Sr2Ta2O7 > Sr5Ta4O15 > SrTa2O6 > Sr4Ta2O9. The relationship between photocatalytic activities and crystal structures is discussed. (c) 2005 Elsevier Inc. All rights reserved.

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