Ultrathin polyamide nanofiltration membrane prepared by triazine-based porous organic polymer as interlayer for dye removal

作     者：Yongbo Liu Zhihao Si Cong Ren Hanzhu Wu Peng Zhan Yuqing Peng Peiyong Qin Yongbo Liu;Zhihao Si;Cong Ren;Hanzhu Wu;Peng Zhan;Yuqing Peng;Peiyong Qin

作者机构：National Energy R&D Center for BiorefineryBeijing University of Chemical TechnologyBeijing 100029China College of Life Science and TechnologyBeijing University of Chemical TechnologyBeijing 100029China Beijing Key Laboratory of Membrane Science and TechnologyCollege of ChemicalEngineeringBeijing University of Chemical TechnologyBeijing 100029China 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2023年第57卷第5期

页      面：193-201页

核心收录：

学科分类：080706[工学-化工过程机械] 08[工学] 0807[工学-动力工程及工程热物理] 0703[理学-化学] 

基　　金：funded by National Key Research and Development Program of China (2021YFC2101202) Bingtuan Science and Technology Program (2022DB025) Beijing Natural Science Foundation (2222015) Hebei Province Key Research and Development Program (21327316D) China Postdoctoral Science Foundation (2021M700011) the long-term subsidy mechanism from the Ministry of Finance and the Ministry of Education of China 

主　　题：Polyamide Nanofiltration Interfacial polymerization Triazine-based porous organic polymer 

摘      要：Separation membrane with high flux is generally encouraged in industrial application,because of the tremendous needs for decreasing membrane areas,usage costs and space *** most effective and direct method for obtaining the high flux is to decrease membrane ***(PA)nanofiltration membrane is conventionally prepared by the direct interfacial polymerization(IP)on substrate surface,and results in a thick PA *** this work,we proposed a strategy that constructing triazine-based porous organic polymer(TRZ-POP)as the interlayer to prepare the ultrathin PA nanofiltration ***-POP is firstly deposited on the polyethersulfone substrate,and then the formed TRZ-POP provides more adhesion sites towards PA based on its high specific surface *** chemical bonding between terminal amine group of TRZ-POP and the amide group of PA further improves the binding force,and strengthens the stability of PA *** importantly,the high porosity of TRZPOP layer causes the higher polymerization of initial PA owning to the stored sufficient amino monomer;and H-bonding interaction between amine groups of TRZ-POP and piperazine(PIP)can astrict the release of ***,IP process is controlled,and the thinnest thickness of prepared PA layer is only15 *** expected,PA/TRZ-POP membrane shows a more excellent water flux of 1414 L·m^(-2)·h^(-1)·MPa^(-1)than that of the state-of-the-art nanofiltration membranes,and without sacrificing dye *** build of TRZPOP interlayer develops a new method for obtaining a high-flux nanofiltration membrane.