U(VI) capture from aqueous solution by highly porous and stable MOFs: UiO-66 and its amine derivative

被引：0

作者：

Bai-Cheng Luo

Li-Yong Yuan

Zhi-Fang Chai

Wei-Qun Shi

Quan Tang

机构：

[1] University of South China,School of Nuclear Science and Technology

[2] Institute of High Energy Physics,Laboratory of Nuclear Energy Chemistry

[3] Chinese Academy of Sciences,School of Radiological & Interdisciplinary Sciences

[4] Soochow University,undefined

来源：

Journal of Radioanalytical and Nuclear Chemistry | 2016年 / 307卷

关键词：

Metal–organic frameworks; UiO-66; Amine derivative; Uranium; Sorption;

D O I：

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学科分类号：

摘要：

Metal–organic frameworks (MOFs) UiO-66 and its amine derivative (UiO-66-NH2) with high surface area and unprecedented chemical stability were synthesized and first explored for U(VI) capture from aqueous solutions. At pH 5.5, U(VI) sorption reach equilibrium in ca. 4 h and the maximum sorption capacity is more than 100 mg g−1. Moreover, they show desirable selectivity towards U(VI) over a range of competing metal ions. Sorption results demonstrate that introduction of amino groups into MOFs does not enhance U(VI) sorption, probably result from the lower activity of aromatic amines, decrease of surface area and formation of intermolecular hydrogen bonds.

引用

页码：269 / 276

页数：7