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Preparation of SrTiO3 nanomaterial by a sol–gel-hydrothermal method

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Abstract

A new synthetic route to obtain high-purity strontium titanate, SrTiO3, using the sol–gel-hydrothermal reaction of TiCl4 and a SrCl2 solution in an oxygen atmosphere has been developed. In the synthesized products the SrTiO3 nanoparticles are nearly spherical and decrease in size with the reaction time (48 h) down to a diameter of about 40 nm. The microstructure and composition of the as-synthesized samples were investigated by X-ray diffraction (XRD), high-resolution TEM (HRTEM), Raman spectroscopy, atomic force microscopy (AFM), and energy-dispersive X-ray spectroscopy (EDX). All the samples were identified as cubic perovskite phase.

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Acknowledgements

This work has been partially financed by FONDECYT Grant under contract No 1080401. The authors thank the Facultad de Ciencias Físicas y Matemáticas of the Universidad de Chile for the use of their analytical equipment (XRD, TEM, and XPS). R.A.Z. acknowledges FUNDACION ANDES Grant under contract No C-13876.

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Authors and Affiliations

  1. Departamento de Física, Facultad de Ciencias, Universidad Católica del Norte, Casilla, 1280, Antofagasta, Chile

    S. Fuentes, R. A. Zarate & E. Chavez

  2. Departamento de Química, Facultad de Ciencias, Universidad Católica del Norte, Casilla, 1280, Antofagasta, Chile

    P. Muñoz

  3. Departamento de Física, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Casilla, 487-3, Santiago, Chile

    D. Díaz-Droguett

  4. Laboratorio de Fotofísica y Espectroscopia Molecular, Instituto de Química, Pontificia Universidad Católica de Valparaíso, Av. Brasil N:2950, Valparaíso, Chile

    P. Leyton

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  1. S. Fuentes
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  2. R. A. Zarate
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  3. E. Chavez
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  4. P. Muñoz
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Correspondence to S. Fuentes.

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Fuentes, S., Zarate, R.A., Chavez, E. et al. Preparation of SrTiO3 nanomaterial by a sol–gel-hydrothermal method. J Mater Sci 45, 1448–1452 (2010). https://doi.org/10.1007/s10853-009-4099-y

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  • DOI: https://doi.org/10.1007/s10853-009-4099-y

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