Journal
JOURNAL OF MATERIALS CHEMISTRY
Volume 19, Issue 6, Pages 787-794Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/b813147c
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Funding
- Research Council of Norway through the NANOMAT program [163565-431]
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A layered titanate CsxTi2-x/2Mgx/2O4 (x = 0.7) with lepidocrocite (gamma-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 center dot 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 center dot 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.
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