U(VI) capture from aqueous solution by highly porous and stable MOFs: UiO-66 and its amine derivative
U(VI) capture from aqueous solution by highly porous and stable MOFs: UiO-66 and its amine derivative
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通过高度多孔且稳定的 MOF 从水溶液中捕获 U(VI)：UiO-66 及其胺衍生物
DOI：
10.1007/s10967-015-4108-3
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发表时间：
2016-01-01
影响因子：
1.6
通讯作者：
Tang, Quan
中科院分区：
文献类型：
--
作者：
Luo, Bai-Cheng;Yuan, Li-Yong;Tang, Quan
合成了具有高比表面积和前所未有的化学稳定性的金属有机框架（MOFs）UiO-66及其胺衍生物（UiO-66-NH 2），并首次探索了从水溶液中捕获U（VI）。pH值为5.5时，U（VI）的吸附在约100 ℃时达到平衡。最大吸附量大于100 mg g（-1）。此外，它们在一系列竞争金属离子上显示出对U（VI）的理想选择性。吸附实验结果表明，氨基的引入并没有增强MOFs对U（VI）的吸附，这可能是由于MOFs中芳香胺活性降低、比表面积减小以及分子间氢键的形成。
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.