Here, we suggest a facile and technologically available approach to synthesis of tungsten oxide-based materials implementing a liquid phase reductive precipitation followed by thermal dehydration of the obtained materials. Structure of the investigated sorbents refers to the type of tungsten bronze. Effects of annealing temperature on such properties as chemical and hydromechanical stability along with selective characteristics with respect to Sr-90 have been studied. Sorption investigations in static and dynamic regimes were done on micro- and macro-concentrations of strontium within 2–12 pH range in water solutions. Material’s selectivity to strontium has been assessed in the presence of such competing ions as Na + , K + , NH 4+ and Ca 2+ . Respective constant values for Freundlich, Langmuir, and Langmuir–Freundlich equations have been evaluated for prepared samples. Full dynamic exchange capacity has been determined in dynamic sorption conditions.

中文翻译：

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用于从水介质中去除 Sr-90 的氧化钨基材料的合成和吸附特性

在这里，我们提出了一种简便且技术上可用的方法来合成基于氧化钨的材料，该方法实施液相还原沉淀，然后对所得材料进行热脱水。所研究的吸附剂的结构是指钨青铜的类型。已经研究了退火温度对诸如化学和流体力学稳定性以及关于 Sr-90 的选择性特性等性质的影响。对水溶液中 2-12 pH 范围内锶的微观和宏观浓度进行了静态和动态状态下的吸附研究。材料对锶的选择性在 Na + 、K + 、NH 4+ 和 Ca 2+ 等竞争离子存在的情况下进行了评估。Freundlich、Langmuir、和 Langmuir-Freundlich 方程已经对制备的样品进行了评估。在动态吸附条件下确定了全动态交换容量。