文献类型：期刊文献

英文题名：New strategy for structure rearrangement of thin-film composite (TFC) polyamide (PA) membranes and offering potential use in both aqueous and organic solvents

作者：Xu, Sun-Jie[1,2,4];Li, Hua-Xiang[3];Luo, Li-Han[2];Yan, Hong-Fei[2];Li, Hong-Bo[1];Jia, Rui[2];Tong, Yi-Hao[2];Han, Rui[2];Xu, Zhen-Liang[2,4]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Chem Engn Res Ctr, Sch Chem Engn, State Key Lab Chem Engn,Membrane Sci & Engn R&D La, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Sch Informat Sci & Engn, Shanghai 200237, Peoples R China;[4]East China Univ Sci & Technol, Shanghai Elect Chem Innovat Inst, Shanghai 200237, Peoples R China

年份：2024

卷号：704

外文期刊名：JOURNAL OF MEMBRANE SCIENCE

收录：;EI(收录号：20242016088039);WOS:【SCI-EXPANDED(收录号:WOS:001242118800001)】；

基金：The authors gratefully acknowledge for the financial support received from Project funded by State Key R & D Program of China (2021YFB3801101 and 2021YFB3801103) and National Natural Sci- ence Foundation of China (22208101) as well as the research funding provided by the Fundamental Research Funds for the Central Univer- sities (JKA01241502) .

语种：英文

外文关键词：Structure rearrangement process(SRP); Thin-film composite (TFC); Organic solvent nanofiltration (OSN); Sodium-ion battery electrolyte (SIBs) recycling

摘要：The purity of sodium hexafluorophosphate (NaPF6) is crucial for the preparation of electrolytes in manufacturing. We propose a simple process in order to induce membrane structure rearrangement process (SRP) by activating thin-film composite (TFC) membranes with polyamide (PA) structure and explore their potential green recycling application in concentrating sodium -ion batteries (SIBs) electrolyte. The method utilizes a solution containing polar aprotic solvent as the soaking and activating solution to swell and disintegrate the loosely cross -linked PA layer, and a non -solvent solidification solution complete the SRP, enhancing the permeability of the PA layer while maintaining high rejection rates for divalent ions. Subsequently, during the further treatment of the membrane surface in structure rearrangement, tert-butanol (TBA) is introduced into the aqueous solution to reconstruct the surface PA layer, further improving the permeability. The optimal D8010T10 achieved a permeation flux of 24.2 L m- 2 h-1 & sdot;bar- 1, with rejection rates for sodium sulfate (Na2SO4), magnesium chloride (MgCl2), and magnesium sulfate (MgSO4) reaching 94.7 %, 98.4 %, and 99.1 % respectively. And the mechanism of SRP with different solvent is analyzed and explained through dissipative particle dynamics (DPD) simulations. This study provides a commercially viable approach for manufacturing high-performance membranes. The D8010T10 membrane achieves more than 90 % separation efficiency for sodium hexafluorophosphate (NaPF6) dissolved in different solvents, providing a potential solution for the concentration and recovery of NaPF6 in lab -scale, verified its potential use in the organic solvent nanofiltration (OSN) and a path way for waste membrane recycling and degrading use in the industry.