文献类型：期刊文献

英文题名：Modulating low-temperature interfacial polymerization with NaHCO3 for high-performance ultrathin nanofiltration membranes

作者：Han, Rui[1];Jia, Rui[1];Xu, Zhen-Liang[1,3];Dai, Jia-Yue[1];Tong, Yi-Hao[1];Li, Hua-Xiang[1,4];Xu, Sun-Jie[1,2,3]

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

年份：2025

卷号：301

外文期刊名：CHEMICAL ENGINEERING SCIENCE

收录：;EI(收录号：20243817046441);WOS:【SCI-EXPANDED(收录号:WOS:001316655600001)】；

基金：The authors gratefully acknowledge for the financial support received from Project funded by National Key R & D Program of China (2021YFB3801101 and 2021YFB3801103) and National Natural Sci-ence Foundation of China (22078092, 21176067 and 22208101) . as well as the research funding provided by the Fundamental Research Funds for the Central Universities (JKA01241502) .

语种：英文

外文关键词：Low-temperature interfacial polymerization; Carbonate chemistry; Density functional theory calculations; Molecular dynamics simulations

摘要：Conventional interfacial polymerization (IP) encounters significant challenges in achieving the desired nanofiltration (NF) membrane structure, owing to uncontrolled diffusion and ultrafast polymerization. Our study introduced carbonates into the low-temperature interfacial polymerization (LTIP) process to precisely regulate the diffusion of amine monomers and polymerization kinetics. Carbonates in the aqueous phase restrict the diffusion of amine monomers while promoting the generation of nanobubbles. Further utilization of the low-temperature oil phase not only retards polymerization but also facilitates the formation of foam nanostructures in the polyamide layer. Density functional theory calculations and molecular dynamics simulations revealed the mechanisms underlying the regulation of amine monomer diffusion and gas-bubble release by carbonates and LTIP. The fabricated membrane has a smoother, ultrathin separation layer while maintaining a high permeability of 35.0 Lm(-2)h(-1)bar(-1) (nearly doubled compared with the pristine membrane) and high Na2SO4 rejection of 99.5 %. This study confirms the practicality of the carbonate-modulated LTIP strategy.