Sorption Composite Materials Based on Tungsten Oxide for the Extraction of Radioactive Strontium from Aqueous Media

IF 1.5 3区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Russian Journal of Inorganic Chemistry Pub Date : 2026-05-25 DOI:10.1134/S0036023626600152

V. A. Balybina, Zh. S. Kuular, N. Yu. Savelieva, N. G. Kokorina, A. N. Dran’kov, A. O. Lembikov, V. V. Provatorova, E. K. Papynov

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Abstract

The work synthesized and studied composite sorption materials based on tungsten oxide within a high-pressure polyethylene matrix for the extraction of radioactive strontium (⁹⁰Sr) from aqueous media. The influence of heat treatment (100–900°C) on the phase composition, structure, and sorption properties was investigated. It was established that composites calcined at 100 and 300°C, which retain a mixture of cubic H_xWO₃ and tetragonal WO₃ phases, exhibit maximum efficiency: the Sr extraction degree reaches 90%, and distribution coefficient K_d is 9 × 10³ mL/g. The high sorption capacity is due to the developed mesoporous structure and the accessibility of active ion-exchange centers. The introduction of polyethylene significantly enhances the hydromechanical strength of the materials, ensuring their stability under dynamic conditions. The results demonstrate the promise of the developed composites for application in technologies for treating liquid radioactive waste.

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基于氧化钨的吸附复合材料对水介质中放射性锶的萃取

在高压聚乙烯基体中合成并研究了基于氧化钨的复合吸附材料，用于从水介质中提取放射性锶（90Sr）。研究了热处理（100-900℃）对合金相组成、结构和吸附性能的影响。结果表明，在100℃和300℃下煅烧的复合材料中，保留了立方WO3和四方WO3相的混合物，其效率最高，Sr萃取度达到90%，分配系数Kd为9 × 103 mL/g。介孔结构发达和活性离子交换中心的可及性是其高吸附性能的主要原因。聚乙烯的引入显著提高了材料的流体机械强度，确保了材料在动态条件下的稳定性。结果表明，所研制的复合材料在放射性液体废物处理技术中具有广阔的应用前景。

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来源期刊

Russian Journal of Inorganic Chemistry 化学-无机化学与核化学

CiteScore

3.10

自引率

38.10%

发文量

237

审稿时长

3 months

期刊介绍： Russian Journal of Inorganic Chemistry is a monthly periodical that covers the following topics of research: the synthesis and properties of inorganic compounds, coordination compounds, physicochemical analysis of inorganic systems, theoretical inorganic chemistry, physical methods of investigation, chemistry of solutions, inorganic materials, and nanomaterials.