The conditions were found and the patterns of formation of Ni and Cu composites based on MgO, obtained by the precipitation method and by the glycine–citrate–nitrate method. The obtained materials are of interest as sorbents for the purification of aqueous media from toxic impurities, as well as catalysts in organic synthesis, in particular for the production of methanol from carbon dioxide. The phase composition, thermal stability, microstructure of obtained nanocomposites, as well as their sorption properties, were studied. It was found that high sorption capacities of powders of magnesium oxide and MgO-M (where M—Cu, Ni) nanocomposites with respect to lead and chromium ions are up to 2989.0 and 499.9 mg/g, respectively.

中文翻译：

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Cu/MgO 和 Ni/MgO 复合纳米粒子用于快速、高效吸附水性铅 (II) 和铬 (III) 离子

通过沉淀法和甘氨酸-柠檬酸盐-硝酸盐法，确定了条件以及基于 MgO 的 Ni 和 Cu 复合材料的形成模式。所获得的材料可用作从有毒杂质中纯化水性介质的吸附剂，以及有机合成中的催化剂，特别是用于从二氧化碳生产甲醇。研究了所得纳米复合材料的相组成、热稳定性、微观结构及其吸附性能。结果表明，氧化镁和 MgO-M（其中 M-Cu、Ni）纳米复合材料粉末对铅和铬离子的高吸附能力分别高达 2989.0 和 499.9 mg/g。