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Updated: Mar 16, 2026

An Efficient Method for Selective Desalination of Radioactive Iodine Anions by Using Gold Nanoparticles-Embedded Membrane Filter
Published on: July 13, 2018
Ionosilicas as efficient sorbents for anionic contaminants: Radiolytic stability and ion capacity
Ut Dong Thach1, Peter Hesemann1, Guangze Yang2
1Institut Charles Gerhardt de Montpellier, UMR 5253 CNRS-UM-ENSCM, Université de Montpellier, Place Eugène Bataillon, 34095 Montpellier cedex 05, France.
Abstract:
Ammonium based hybrid ionosilicas were prepared from tetrasilylated ammonium precursors. The formed material exhibited high specific surface area together with mesoporosity. Our results indicate that ionosilicas display high exchange capacity for iodide. They were submitted to 10MeV electron irradiation at a total dose of 1.7MGy. Irradiation was shown not to alter the properties of ionosilica: the morphological, textural and surface properties of the material are hardly modified. The sorption properties (sorption capacity and cumulative displacement enthalpy) are similar before and after electron irradiation. This high radiolytical stability confirms that these innovative materials have therefore high potential as anion traps for future applications in decontamination processes or long term storage of radioactive waste.
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