文献类型：期刊文献

英文题名：Thermo-responsive ion imprinted polymer on the surface of magnetic carbon nanospheres for recognizing and capturing low-concentration lithium ion

作者：Liang, Chang[1];Zhang, Xiaopei[1];Liu, Weifeng[1,2];Song, Xingfu[2];Sun, Shuying[2];Fu, Dongju[3];Dong, Geng[4];Wang, Meiling[1];Bai, Yonghui[5];Liu, Xuguang[1]

机构：[1]Taiyuan Univ Technol, Coll Mat Sci & Engn, Taiyuan, Peoples R China;[2]East China Univ Sci & Technol, Natl Engn Res Ctr Integrated Utilizat Salt Lake Re, Shanghai 200237, Peoples R China;[3]Shenzhen Technol Univ, Coll New Mat & New Energies, Shenzhen 518055, Guangdong, Peoples R China;[4]Shantou Univ Med Coll, Dept Biochem & Mol Biol, Shantou 515041, Peoples R China;[5]Ningxia Univ, State Key Lab High Efficiency Utilizat Coal & Gree, Yinchuan 750021, Peoples R China

年份：2023

卷号：201

外文期刊名：MINERALS ENGINEERING

收录：;EI(收录号：20232814382777);WOS:【SCI-EXPANDED(收录号:WOS:001040356700001)】；

基金：This work was financially supported by Key Program of Yinchuan science and Technology Bureau (2021ZD08) , Central Leading Science and Technology Development Foundation of Shanxi Province (YDZJSX2022A009) , Key R & D Program of Shanxi Province (International Cooperation, 201903D421077) , National Natural Science Foundation of China (51972221, 51603142, 51902222) , Foundation of State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering (Grant No. 2021-K46) , Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi (2019L0255, 2020L0097) .

语种：英文

外文关键词：Ion imprinting; Lithium ion; Selective recognition and adsorption; Thermo; and magnetic dual responsive; materials; Theoretical simulated calculation

摘要：Ion imprinted polymer (IIP) on the surface of magnetic carbon nanospheres, using N-propylacrylamide and benzo-12-crown 4-ether (B12C4) as bi-functional monomers, is designed and synthesized for the selective recognition and recovery of Li+ from aqueous medium. The adsorption behaviors of Li+-IIP including adsorption kinetics, isotherms, selective recognition, and regeneration are investigated in detail by inductively coupled plasma-optical emission spectroscopy. The adsorption capacity of Li+-IIP towards Li+ reaches a maximum value of 23.46 mg g+1 at 25 C within 60 min. The Langmuir and pseudo-second-order models manifest the apparent adsorption behavior dominated by single layer chemisorption. The Li+-IIP realized selective adsorption of Li+ against Na+, K+, Mg2+, Al3+, and Fe3+ in their coexistence solution. It is reused five times without a significant decrease with the assistance of externally applied magnetic field for solid/liquid separation. The recognition mechanism of Li+-IIP towards Li+ is the combined action of dehydration effect, electrostatic attraction, and size and imprinting effect, as identified by theoretical simulated calculation based on density functional theory and experimental data. The temperature-responsive adsorption of Li+-IIP towards Li+ facilitates the adsorption/ desorption operations. Li+-IIP shows good separation from the treated solution by applying an external magnetic field. This work provides new insights into the recovery of lithium.