文献类型：期刊文献

英文题名：Development of high permeability nanofiltration membranes through porous 2D MOF nanosheets

作者：Jin, Xiao-Gang[1];Liang, Xiao-Kang[1];Liu, Jia-Hao[1];Mo, Jia-Wei[1];Ren, Tian-Xiang[1];Ma, Xiao-Hua[1];Xu, Zhen-Liang[1]

机构：[1]East China Univ Sci & Technol, Chem Engn Res Ctr, Sch Chem Engn, Membrane Science& Engn R&D Lab,State Key Lab Chem, Shanghai 200237, Peoples R China

年份：2023

卷号：471

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20233014428897);WOS:【SCI-EXPANDED(收录号:WOS:001035189100001)】；

基金：The authors gratefully acknowledge the financial support from the National Natural Science Foundation of China (21978081 and 22278131) , the Natural Science Foundation of Shanghai (21ZR1417500) , the National Key Research and Development Plan (2021YFB3801103) , and the Open Project of State Key Laboratory of Chemical Engineering (SKL-ChE-21C03) .

语种：英文

外文关键词：Porous 2D MOF nanosheets; High permeability; Nanofiltration; Interfacial polymerization; Water transport

摘要：High-performance nanofiltration membrane is of great importance to alleviate the worldwide freshwater crisis. Recent studies have shown that the performance of nanofiltration membranes can be enhanced by optimizing the properties of the substrates. Substrates with large pores are favorable to mass transfer but difficult to prepare highly selective polyamide layers on them by interfacial polymerization reaction. Here we employed porous twodimensional (2D) aluminum-metal organic framework (Al-MOF) nanosheets to tune the commercial Nylon microfiltration substrate, and then prepared polyamide nanofiltration membranes by interfacial polymerization. 2D Al-MOF nanosheets were chosen for the tuning material except for their obvious advantages of easy synthesis and structural stability, the most important thing was their high porosity, which provided additional water transport channels. The morphologies as well as the separation properties were analyzed systematically. The best-performing Nylon-2.5 TFC membrane achieved an ultrahigh permeability (42.4 L m ? 2 h 1 bar ? 1), 13 times that of a control (PES-0) TFC membrane prepared on commercial PES substrate under the same interfacial polymerization conditions while ensuring the high rejection of Na2SO4 (97.0%). Our work provides insights for optimizing substrate properties to prepare high-performance nanofiltration membranes.