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Continuous hydrothermal synthesis and crystallization of magnetic oxide nanoparticles

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Abstract

The continuous hydrothermal synthesis of nanoparticles of two metal oxides (α–Fe2O3 and Co3O4) is described. Two variations of the technique were investigated, involving the precipitation reaction between a metal salt solution and a hydroxide solution at ambient conditions and at elevated temperatures. Elevated temperatures resulted in more uniform particles of α–Fe2O3 and Co3O4, although the actual sizes of the particles were apparently unaffected by the temperature. This behavior was attributed to the species present in solution and the solubilities of the cation(s), both of which were calculated via a thermodynamic model for the systems under study.

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Authors and Affiliations

  1. School of Chemical Engineering, Georgia Institute of Technology, Atlanta, Georgia, 30332, USA

    Linda J. Cote & Amyn S. Teja

  2. School of Chemistry & Biochemistry, Georgia Institute of Technology, Atlanta, Georgia, 30332, USA

    Angus P. Wilkinson & Z. John Zhang

Authors
  1. Linda J. Cote
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  2. Amyn S. Teja
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  3. Angus P. Wilkinson
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  4. Z. John Zhang
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Cote, L.J., Teja, A.S., Wilkinson, A.P. et al. Continuous hydrothermal synthesis and crystallization of magnetic oxide nanoparticles. Journal of Materials Research 17, 2410–2416 (2002). https://doi.org/10.1557/JMR.2002.0352

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  • DOI: https://doi.org/10.1557/JMR.2002.0352

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