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Issue 6, 2009
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Protonic titanate derived from CsxTi2−x/2Mgx/2O4 (x = 0.7) with lepidocrocite-type layered structure

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Abstract

A layered titanate CsxTi2−x/2Mgx/2O4 (x = 0.7) with lepidocrocite (γ-FeOOH)-type layered structure was prepared via solid-state reaction. Extraction of both Mg2+ ions in the host layers and interlayer Cs+ ions was achieved during an acid-exchange process, producing a new protonic titanate HxTi2−x/2O4−x/2·H2O. This phase was distinguished from isomorphous related compounds in terms of removable lattice Mg and O atoms. The protonic titanate HxTi2−x/2O4−x/2·H2O showed excellent exfoliation/delamination reactivity upon intercalating organic amine ions as well as the ability to produce single two-dimensional titanate nanosheets with small thickness of about 1 nm. These findings offered a new clue for understanding the physicochemical properties of lattice dopants in lepidocrocite titanates.

Graphical abstract: Protonic titanate derived from CsxTi2−x/2Mgx/2O4 (x = 0.7) with lepidocrocite-type layered structure

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Article information


Submitted
30 Jul 2008
Accepted
14 Nov 2008
First published
19 Dec 2008

J. Mater. Chem., 2009,19, 787-794
Article type
Paper

Protonic titanate derived from CsxTi2−x/2Mgx/2O4 (x = 0.7) with lepidocrocite-type layered structure

T. Gao, H. Fjellvåg and P. Norby, J. Mater. Chem., 2009, 19, 787
DOI: 10.1039/B813147C

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