Synthesis methods and the phase composition of Zn,Al and Mg,Al double layered hydroxides intercalated with citrate ions and their magnetic nanocomposites are described. It is shown that the ultrasonic processing of magnetic sorbents results in that the structure of the interlayer spaces is ordered. A study of the sorption extraction of U(VI) with these materials demonstrated that cations typically contained in natural water (Na⁺, K⁺, Ca²⁺, Mg²⁺) hardly affect the extraction of U(VI) from aqueous media in contrat to HCO₃– anions and humic acids. The most effective removal of U(VI) from aqueous media is observed for the citrate form of the Mg, Al sorbent in a wide range of pH values (2.5–9.0).

中文翻译：

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从层状锌，铝和镁，铝双金属氢氧化物插入柠檬酸根离子及其磁性纳米复合材料从水介质中萃取铀（VI）

描述了嵌入柠檬酸盐离子的Zn，Al和Mg，Al双层氢氧化物及其磁性纳米复合材料的合成方法和相组成。结果表明，磁性吸附剂的超声处理导致层间空间的结构有序。用这些材料对U（VI）进行吸附萃取的研究表明，天然水中通常含有的阳离子（Na ⁺，K ⁺，Ca 2 ⁺，Mg ²⁺）几乎不会影响从水中的U（VI）萃取。与HCO _3-阴离子和腐殖酸相反。对于柠檬酸形式的Mg，Al吸附剂，在很宽的pH值范围内（2.5-9.0），可以最有效地从水性介质中去除U（VI）。