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首页> 外文期刊>RSC Advances >Bifunctional polymeric microspheres for efficient uranium sorption from aqueous solution: synergistic interaction of positive charge and amidoxime group
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Bifunctional polymeric microspheres for efficient uranium sorption from aqueous solution: synergistic interaction of positive charge and amidoxime group

机译：用于从水溶液中有效吸附铀的双功能聚合物微球：正电荷与a肟肟基团的协同相互作用

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It is of strategic and ecological importance to capture uranium(VI) from aqueous solutions. A novel strategy is reported herein to synthesize bifunctional polymeric microspheres for efficient uranium removal from aqueous solution. Specifically, positively charged microspheres with amidoxime groups were prepared by emulsion polymerization. The high selectivity and fast kinetics for uranium(VI) can be achieved by the microspheres via the synergistic interaction of positive charge and coordinating ligand. The negative uranium tricarbonate complex would be adsorbed to the positively charged microspheres by coulombic interaction without interference of other metal cations, and the coordination may occur with amidoxime groups via ligand exchange. It is calculated that nearly 36% of the adsorbed uranium(VI) is due to coulombic interactions of the positive charge while 64% is due to coordination of amidoxime groups. To the best of our knowledge, this is the first report on colloidal particles with positive charges and ligand groups for uranium(VI) uptake from aqueous solution.
机译：从水溶液中捕获铀（VI）具有战略和生态意义。本文报道了合成双功能聚合物微球以从水溶液中有效去除铀的新策略。具体地，通过乳液聚合制备具有a肟基的带正电荷的微球。铀（VI）的高选择性和快速动力学可以通过微球通过正电荷和配位体的协同相互作用来实现。负的三碳酸铀络合物将通过库伦相互作用吸附到带正电荷的微球上，而不会受到其他金属阳离子的干扰，并且ligand胺肟基团可能通过配体交换发生配位。据计算，近36％的吸附铀（VI）是由于正电荷的库仑相互作用，而64％是由于mid胺肟基团的配位。据我们所知，这是第一个关于带正电荷和配体基团的胶体颗粒从水溶液中吸收铀（VI）的报告。

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