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Influence of the neutralization process on the preparation of titanate nanotubes by hydrothermal synthesis

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Abstract

The influence of the neutralization process after hydrothermal synthesis on the structure and morphology of titanate nanotubes was investigated by X-ray diffraction, high-resolution transmission electron microscopy and Raman spectroscopy. Well formed nanotubes were obtained during the hydrothermal treatment of anatase in highly alkaline conditions. Synthesis at 150 °C led to the formation of layered titanate structure with the general formula Na2−x H x Ti2O5·1.8 H2O, where x depends on pH. The tubular morphology is not dependent on the Na+/H+ ion exchange reaction.

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Acknowledgments

The authors acknowledge FCT, FEDER and FAME Network. FM is grateful to FCT for the fellowship SFRH/BD/23375/2005.

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Authors and Affiliations

  1. Department of Ceramics and Glass Engineering, CICECO, University of Aveiro, 3810-193, Aveiro, Portugal

    Florentina Maxim, Paula Ferreira & Paula Maria Vilarinho

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  1. Florentina Maxim
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  2. Paula Ferreira
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  3. Paula Maria Vilarinho
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Correspondence to Paula Maria Vilarinho.

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Maxim, F., Ferreira, P. & Vilarinho, P.M. Influence of the neutralization process on the preparation of titanate nanotubes by hydrothermal synthesis. J Porous Mater 18, 37–45 (2011). https://doi.org/10.1007/s10934-010-9354-8

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