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ChemInform Abstract: A[Bi3Ti4O13] and A[Bi3PbTi5O16] (A: K, Cs): New n = 4 and n = 5 Members of the Layered Perovskite Series, A[A′n-1BnO3n+1], and Their Hydrates.

✍ Scribed by J. Gopalakrishnan; T. Sivakumar; V. Thangadurai; G. N. Subbanna

Publisher
John Wiley and Sons
Year
2010
Weight
38 KB
Volume
30
Category
Article
ISSN
0931-7597

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✦ Synopsis

A[Bi 3 Ti 4 O 13 ] and A[Bi 3 PbTi 5 O 16 ] (A: K, Cs): New n = 4 and n = 5 Members of the Layered Perovskite Series, A[A' n-1 BnO 3n+1 ], and Their Hydrates.

-New layered bismuth titanates [cf. (III), (V)] corresponding to the n=4 and n=5 members of the Dion-Jacobson series of layered perovskite oxides are synthesized by solid state reaction. An excess of alkali metal cations is required to suppress the competitive formation of Aurivillius phases. The layered titanates undergo spontaneous hydration, a feature which make them potentially useful as photocatalysts for water splitting reactions. The hydration of the potassium compounds is accompanied by a significant structural change. -(

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