Comparative analysis of the sorption ability of the obtained carbonate forms of layered double hydroxides with different Ni(II)/Fe(III) ratio and their magnetic nanocomposites toward \({{\text{UO}}}_{2}^{2+}\) ions in aqueous solutions is performed. The synergistic effect of magnetic composite sorbents based on layered double hydroxides and magnetite on the removal uranyl ions in a wide pH range (3.5-9.5) is shown. Due to the high efficiency in combination with magnetic solid-phase separation, the obtained adsorption materials are promising for the purification of uranium-containing natural and wastewaters.

中文翻译：

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Ni(II)/Fe(III)层状双氢氧化物及其磁性纳米复合材料吸附去除水溶液中的$${{\text{UO}}}_{2}^{2+}$$离子

不同Ni(II)/Fe(III)比的碳酸盐形式的层状双氢氧化物及其磁性纳米复合材料对\({{\text{UO}}}_{2}^{2的吸附能力的比较分析+}\)离子在水溶液中进行。显示了基于层状双氢氧化物和磁铁矿的磁性复合吸附剂在较宽的 pH 范围（3.5-9.5）内去除铀酰离子的协同效应。由于与磁固相分离相结合的高效率，所获得的吸附材料有望用于含铀天然和废水的净化。