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Abstract <p>A method for the synthesis of stable aqueous HfO<sub>2</sub> colloids doped with Eu<sup>3+</sup> or Gd<sup>3+</sup> cations is proposed. It is shown that the introduction of a lanthanide cation into the hafnium oxide structure leads to the stabilization of the metastable tetragonal modification of HfO<sub>2</sub>. Dynamic light scattering showed that sols of HfO<sub>2</sub> doped with rare-earth element cations are characterized by a narrow monomodal particle size distribution and possess high aggregative stability (ζ-potential less than −17 mV). The Eu<sup>3+</sup>-doped HfO<sub>2</sub> colloid exhibits luminescent properties, making it a promising bifunctional theranostic material.</p>

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Synthesis of Aqueous Sols of Nanocrystalline Hafnium Dioxide Doped with Europium or Gadolinium

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • K. N. Novoselova,
  • E. D. Sheichenko,
  • M. A. Popkov,
  • D. N. Vasilyeva,
  • E. A. Trufanova,
  • M. R. Protsenko,
  • A. E. Baranchikov,
  • V. K. Ivanov

摘要

Abstract

A method for the synthesis of stable aqueous HfO2 colloids doped with Eu3+ or Gd3+ cations is proposed. It is shown that the introduction of a lanthanide cation into the hafnium oxide structure leads to the stabilization of the metastable tetragonal modification of HfO2. Dynamic light scattering showed that sols of HfO2 doped with rare-earth element cations are characterized by a narrow monomodal particle size distribution and possess high aggregative stability (ζ-potential less than −17 mV). The Eu3+-doped HfO2 colloid exhibits luminescent properties, making it a promising bifunctional theranostic material.