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<b>Abstract</b>— <p>Nanocrystalline HfO<sub>2</sub> colloids (crystallite size ~20 nm) were prepared by a novel method through the combination of an ion-exchange technique and hydrothermal treatment. The synthetic procedure allowed synthesizing stable aqueous colloids of monoclinic hafnia with a monomodal particle size distribution and a low aggregation degree (ζ-potential amounted to −34 mV) which were stable over 6 months. The synthetic procedure allowed for the integration of Eu<sup>3+</sup> and Tb<sup>3+</sup> ions into the HfO<sub>2</sub> crystal structure yielding stable luminescent aqueous colloids.</p>

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Anion-Exchange Mediated Synthesis of Stable HfO2 Aqueous Colloids

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • E. A. Trufanova,
  • M. A. Popkov,
  • D. N. Vasilyeva,
  • M. A. Teplonogova,
  • S. Yu. Kottsov,
  • V. M. Gumenyuk,
  • A. E. Baranchikov,
  • V. K. Ivanov

摘要

Abstract—

Nanocrystalline HfO2 colloids (crystallite size ~20 nm) were prepared by a novel method through the combination of an ion-exchange technique and hydrothermal treatment. The synthetic procedure allowed synthesizing stable aqueous colloids of monoclinic hafnia with a monomodal particle size distribution and a low aggregation degree (ζ-potential amounted to −34 mV) which were stable over 6 months. The synthetic procedure allowed for the integration of Eu3+ and Tb3+ ions into the HfO2 crystal structure yielding stable luminescent aqueous colloids.