Journal
CERAMICS INTERNATIONAL
Volume 37, Issue 1, Pages 111-117Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2010.08.022
Keywords
Powders: chemical preparation; Spectroscopy; Electron microscopy; TiO2; Layered Nb-titanates
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Funding
- Serbian Ministry of Science [142059]
- RP DEMATEN [204953]
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The formation mechanism of layered titanates is described and Nb incorporation into these layers discussed. Titanate-based structures were obtained M highly alkaline solutions by the hydrothermal synthesis of Nb-anatase powder prepared by a modified sol-gel method. Samples were characterised by XRD, FT-IR and Raman spectroscopy, SEM and TEM (including EDS). The results confirmed the formation of layered trititanates, after 3 h of hydrothermal synthesis. Raman and EDS analyses have shown that Nb ions enter the layered structures. Results suggest the restructuring of the starting powder into individual trititanate nanosheets, as a possible formation mechanism of layered titanates, which proceeds with their roll up into a one-dimensional structure. (C) 2010 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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