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[3,4];Liu, Honglai[3,4]

机构：[1]East China Univ Technol, Sch Chem Mat Sci, Jiangxi Prov Key Lab Polymer Micro Nano Mfg & Devi, Nanchang 330013, Peoples R China;[2]Kunming Univ Sci & Technol, Natl Engn Res Ctr Vacuum Met, Kunming 650093, Yunnan, Peoples R China;[3]East China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[4]East China Univ Sci & Technol, Dept Chem, Shanghai 200237, Peoples R China

年份：2024

卷号：330

外文期刊名：SEPARATION AND PURIFICATION TECHNOLOGY

收录：;EI(收录号：20234314960605);WOS:【SCI-EXPANDED(收录号:WOS:001101597900001)】；

基金：Financial support for this work was provided by the National Science Foundation of China (21908022, 22066002, 22105034, 22108111) , the Jiangxi Provincial Natural Science Foundation (20202BAB213009) , Jiangxi Provincial Key Innovation Project (202110405013) , Jiangxi Provincial General Innovation Project (S202210405034) . Natural Science Foundation of Yunnan Province (202101AU070021) , Xingdian Talent Support Project (YNQR-QNRC-2020-081) , Science Research Foundation of Education Department in Yunnan Province (2021J0064) , and Natural Science Foundation of Kunming University of Science and Technology (KKZ3202052038) .

语种：英文

外文关键词：Hyper-crosslinked porous polymer; Phosphate functional; Uranium; Adsorption; DFT calculation

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 and 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 polymer TPP-DFP has a high BET surface area of 1397.62 m(2)/g with a rich porosity. The porous 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. In the presence of impurity ions such as Ca2+, Mg2+, Al3+, Co2+, Ni2+, V5+, NO3-, CO32- etc., TPP-DFP exhibited high selectivity (Su up to 99%) for uranium. In addition, TPP-DFP has excellent reusability, and the removal percentage 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 showed potential for preparation effective adsorbents for uranium extraction from water.