Highly selective adsorption of uranium in strong HNO3 media achieved on a phosphonic acid functionalized nanoporous polymer
Highly selective adsorption of uranium in strong HNO3 media achieved on a phosphonic acid functionalized nanoporous polymer
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膦酸功能化纳米多孔聚合物在强 HNO3 介质中实现对铀的高度选择性吸附
DOI：
10.1039/c7ta07320h
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发表时间：
2017-11
影响因子：
11.9
通讯作者：
Xiaohong Zhao
中科院分区：
文献类型：
--
作者：
Dingzhong Yuan;Yun Wang;Yong Qian;Yan Liu;Gang Feng;Bin Huang;Xiaohong Zhao
铀与其他金属离子之间的竞争是在浓硝酸介质中回收铀的最大挑战之一。在这项研究中，一种新型的纳米多孔有机聚合物吸附剂P（EGDMA-VPA）（POP-EDVP）的设计和合成的溶剂热策略，表现出高选择性吸附铀在强硝酸介质中含有16个共存的阳离子。突出的选择性（SU = 94.2%）的吸附铀的聚合物是合理的归因于PO基团的存在下，在聚合物骨架中，PO基团具有较强的络合与UO 2（NO3）2，证明了他们的XPS结果和支持的密度泛函理论（DFT）计算。非常重要的是，该聚合物在298 K下在4 M HNO 3溶液中显示出高达215.9 mg g−1的铀最大吸附容量。即使循环使用七次，其吸附能力也没有任何明显的损失。本工作提供了一种制备高分子吸附剂的简单方法，该吸附剂可在强硝酸介质中高选择性吸附铀，对强酸性介质中铀的回收具有重要意义。
The competition between uranium and other metal ions is one of the greatest challenges for recovery of uranium in strong HNO3 media. In this study, a novel nanoporous organic polymer adsorbent P(EGDMA-VPA) (POP-EDVP) was designed and synthesized by a solvothermal strategy, showing highly selective adsorption of uranium in strong HNO3 media containing 16 co-existing cations. The outstanding selectivity (SU = 94.2%) for the adsorption of uranium on the polymer is reasonably attributed to the presence of PO groups in the polymer skeleton, where the PO groups have a strong complexation with UO2(NO3)2, as evidenced by their XPS results and supported by the density functional theory (DFT) calculation. Very importantly, the polymer shows a maximum adsorption capacity of uranium as high as 215.9 mg g−1 at 298 K in a 4 M HNO3 solution. Even after recycling seven times, there is not any noticeable loss of its sorption capacity. This work shows a simple route to prepare a polymer adsorbent for highly selective adsorption of uranium in strong HNO3 media, which is very significant for recovery of uranium in strongly acidic media.
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影响因子：
5.7
作者：
Chinthalapati Siva Kesava Raju;M. S. Subramanian
通讯作者：
Chinthalapati Siva Kesava Raju;M. S. Subramanian
磷酰胺修饰的 SBA-15 去除含水铀：实验和 DFT 相结合的研究
影响因子：
3.9
作者：
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通讯作者：
Chuipeng Kong
溶剂热法制备具有大纳米孔的吸附聚合物整体材料以固定生物分子
DOI：
10.1016/j.colsurfa.2011.01.059
发表时间：
2011-05
期刊：
Colloids and Surfaces A: Physicochemical and Engineering Aspects
影响因子：
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作者：
Wei, Shu;Zhang, Yong-Lai;Ding, Hong;Liu, Jiayin;Sun, Jing;He, Yinyan;Li, Zhengqiang;Xiao, Feng-Shou
通讯作者：
Xiao, Feng-Shou
影响因子：
1.6
作者：
K. Venkatesan;K. Shyamala;M. Antony;T. Srinivasan;P. Vasudeva Rao
通讯作者：
K. Venkatesan;K. Shyamala;M. Antony;T. Srinivasan;P. Vasudeva Rao
DOI：
10.1039/b715180b
发表时间：
2008-04
期刊：
Physical chemistry chemical physics : PCCP
影响因子：
--
作者：
T. Chu;Keli Han
通讯作者：
T. Chu;Keli Han