Selective Adsorption of Rare Earth Elements by Zn-BDC MOF/Graphene Oxide Nanocomposites Synthesized via In Situ Interlayer-Confined Strategy,Industrial & Engineering Chemistry Research

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Selective Adsorption of Rare Earth Elements by Zn-BDC MOF/Graphene Oxide Nanocomposites Synthesized via In Situ Interlayer-Confined Strategy
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2022-01-19 , DOI: 10.1021/acs.iecr.1c04180
Ziying Chen _{1,

2} , Zhan Li ₃ , Jia Chen ₂ , Hongxin Tan ₂ , Jinsheng Wu ₂ , Hongdeng Qiu _{2,

4}

Affiliation

Separation of rare earth elements has always been an urgent problem in the industry. Although a variety of adsorption materials have been developed for the adsorption and separation of rare earth elements, it is difficult to achieve high adsorption capacity and high separation selectivity from most of them at the same time. In this work, to combine the advantages of the good adsorption capacity of graphene oxide (GO) and high separation selectivity of metal organic frameworks (MOFs), two-dimensional MOFs and GO nanocomposite materials (2D Zn-BDC MOF/GO) were synthesized by a solvothermal interlayer-confined strategy. The composite material has a maximum adsorption capacity of 344.48 mg/g for rare earth ions, with the selectivity of Sc/Tm ≈ 529.57, Sc/Er ≈ 461.91, Sc/Y ≈ 445.70, and Tm/Eu ≈ 4.55. This work brings us a new route to synthesize 2D MOF/GO nanocomposite materials and combine their advantages for the separation of rare earth elements in chemical engineering research.

中文翻译：

原位层间限制策略合成的 Zn-BDC MOF/氧化石墨烯纳米复合材料对稀土元素的选择性吸附

稀土元素的分离一直是业界亟待解决的问题。尽管已经开发出多种吸附材料用于稀土元素的吸附分离，但其中大部分难以同时实现高吸附容量和高分离选择性。在这项工作中，结合氧化石墨烯（GO）良好的吸附能力和金属有机骨架（MOFs）的高分离选择性的优点，合成了二维MOFs和GO纳米复合材料（2D Zn-BDC MOF/GO）。通过溶剂热夹层限制策略。该复合材料对稀土离子的最大吸附量为344.48 mg/g，选择性为Sc/Tm≈529.57、Sc/Er≈461.91、Sc/Y≈445.70、Tm/Eu≈4.55。

更新日期：2022-02-02

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