文献类型：期刊文献

英文题名：A Novel Phosphorylated Hyper-Crosslinked Porous Polymer for Efficient Uranium Adsorption in Water

作者：He, Yan[1]; Bao, Wenli[1]; Du, Qingwang[1]; Wu, Xuan[1]; Fu, Xiaolei[1]; Yuan, Dingzhong[1]; Na, Bing[1]; Yu, Fengtao[1]; Zhang, Shaoze[2]; Peng, Changjun[3]; Liu, Honglai[4]

机构：[1] Jiangxi Province Key Laboratory of Polymer Micro/Nano Manufacturing and Devices, School of Chemistry Materials Science, East China University of Technology, Nanchang, 330013, China; [2] National Engineering Research Center of Vacuum Metallurgy, Kunming University of Science and Technology, Yunnan province, Kunming, 650093, China; [3] Key Laboratory for Advanced Materials, Department of Chemistry, East China University of Science and Technology, Shanghai, 200237, China; [4] School of Chemistry and Molecular Engineering, China

年份：2023

外文期刊名：SSRN

收录：EI(收录号：20230211515)

语种：英文

外文关键词：Density functional theory - Monomers - Phosphorylation - Reusability

摘要：As the nuclear resource industry rapidly progresses, efficient adsorbents play a vital role in separating and eliminating uranium from aqueous solutions. Herein, 9,9-dimethyl-fluorenylphosphonic acid was designed as a phosphate functional monomer, the triptycene as a rigid backbone monomer. Through the "knitting" strategy, a novel triptycene-based phosphorylated hyper-crosslinked porous polymer (TPP-DFP) was obtained by the above monomers. The resulted porous polymer TPP-DFP has a high BET surface area of 1397.62 m2/g with a rich porosity. The polymer TPP-DFP was the first time used for uranium adsorption from water and showed outstanding adsorption performance. The maximum uranium adsorption capacity of TPP-DFP was 414.26 mg/g, which was higher than that of most of other porous adsorbents. And the uranium adsorption equilibrium time by TPP-DFP was 60 min. In the presence of impurity ions such as Ca2+, Mg2+, Al3+, Co2+, Ni2+, NO3-, CO32- etc., TPP-DFP exhibited high selectivity (Su up to 99%) for uranium. In addition, TPP-DFP has excellent reusability, and the removal rate of uranium can reach more than 95% after 5 adsorption-desorption cycles. According to the XPS experiment, the mechanism of interaction between TPP-DFP and U(VI) was mainly due to the complex formed by the phosphate functional groups and U(VI). The theory DFT calculation indicated a 1:2 ratio of U(VI) and phosphate functional group on the two-distinct graft chain, which was consistent with the experimental results. Accordingly, the "knitting" polymerization technique shows potential for preparation effective adsorbents for uranium extraction from water. ? 2023, The Authors. All rights reserved.