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Metastable Sr 0.5 TaO 3 Perovskite Oxides Prepared by Nanosheet Processing
Author(s) -
Inaba Keigo,
Suzuki Shinya,
Noguchi Yuji,
Miyayama Masaru,
Toda Kenji,
Sato Mineo
Publication year - 2008
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200800776
Subject(s) - nanosheet , metastability , chemistry , dehydration , distilled water , photocatalysis , irradiation , perovskite (structure) , nuclear chemistry , chemical engineering , crystallography , mineralogy , inorganic chemistry , catalysis , organic chemistry , chromatography , physics , biochemistry , nuclear physics , engineering
Abstract Metastable Sr 0.5 TaO 3 with a perovskite structure was prepared by using layer‐structured H 2 Sr 1.5 Ta 3 O 10 by two different processes: direct dehydration and nanosheet processing, and the photocatalytic activities of the obtained structures were investigated for the evolution of H 2 and O 2 from distilled water under UV light irradiation. The average gas evolution rates were 66 μmol h –1 (H 2 ) and 16 μmol h –1 (O 2 ) for Sr 0.5 TaO 3 prepared by direct dehydration, whereas those obtained by nanosheet processing were 126 μmol h –1 (H 2 ) and 33 μmol h –1 (O 2 ). It was shown that nanosheet processing is effective for obtaining metastable Sr 0.5 TaO 3 with high photocatalytic activities. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)