Central European Journal of Chemistry

, Volume 9, Issue 3, pp 415–421

Nax−yHyTi2−xFexO4·nH2O nanosheets with lepidocrocite-like layered structure synthesized by hydrothermal treatment of ilmenite sand

  • Paula M. Jardim
  • Lidija Mancic
  • Bojan A. Marinkovic
  • Olivera Milosevic
  • Fernando Rizzo
Research Article

DOI: 10.2478/s11532-011-0016-8

Cite this article as:
Jardim, P.M., Mancic, L., Marinkovic, B.A. et al. cent.eur.j.chem. (2011) 9: 415. doi:10.2478/s11532-011-0016-8
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Abstract

Nax−yHyTi2−xFexO4·nH2O nanosheets with lepidocrocite-like layered structure were produced through alkaline hydrothermal treatment at very low temperatures (130°C) from ilmenite sand. The crystal structure, morphology and optical properties were investigated by X-Ray diffraction, transmission electron microscopy, selected area electron diffraction, energy dispersive spectroscopy and UV-Vis spectroscopy. The product shows leaf-like nanosheet morphology with thickness <30 nm and lengths <1 µm. Three lepidocrocite-like titanates (Imm2 space group) with similar a and c lattice parameters but different interlayer distances (b/2) were identified. This appears to be the first preparation of lepidocrocite-like layered nanosheets by a simple, energy efficient (low temperature) and low cost (starting from mineral sand) procedure.

Keywords

Ilmenite Hydrothermal synthesis Lepidocrocite-like layered structure X-ray diffraction Transmission electron microscopy 

Copyright information

© © Versita Warsaw and Springer-Verlag Wien 2011

Authors and Affiliations

  • Paula M. Jardim
    • 1
  • Lidija Mancic
    • 2
  • Bojan A. Marinkovic
    • 1
  • Olivera Milosevic
    • 2
  • Fernando Rizzo
    • 1
  1. 1.Departamento de Engenharia de MateriaisPontifícia Universidade Católica do Rio de Janeiro, GáveaRio de JaneiroBrazil
  2. 2.Institute of Technical Sciences of Serbian Academy of Sciences and ArtsBelgradeSerbia

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