文献类型：期刊文献

英文题名：A facile preparation of novel positively charged MOF/chitosan nanofiltration membranes

作者：Ma, Xiao-Hua[1,2];Yang, Zhe[2];Yao, Zhi-Kan[2];Xu, Zhen-Liang[1];Tang, Chuyang Y.[2]

机构：[1]East China Univ Sci & Technol, Chem Engn Res Ctr, Shanghai Key Lab Multiphase Mat Chem Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Univ Hong Kong, Dept Civil Engn, Pokfulam HW619B, Hong Kong, Peoples R China

年份：2017

卷号：525

起止页码：269

外文期刊名：JOURNAL OF MEMBRANE SCIENCE

收录：;EI(收录号：20165203192370);WOS:【SCI-EXPANDED(收录号:WOS:000392558000029)】；

基金：The authors gratefully acknowledge the Innovation and Technology Fund (Project #ITS/208/14), the General Research Fund (Project 17207514) and the Strategic Research Theme (Clean Energy) of the University of Hong Kong, Hong Kong for supporting to the study. X. Ma is supported by the Hong Kong Scholars Program (XJ2015015), the National Natural Science Foundation of China, China (21406060), the Shanghai Sailing Program (14YF1404800), the Fundamental Research Funds for the Central Universities (WA1514305) and the Open Project of State Key Laboratory of Chemical Engineering (SKL-ChE-14C03).

语种：英文

外文关键词：Positive charge; Nanofiltration; Metal-organic frameworks (MOFs); Morphology; Chitosan

摘要：A novel positively charged nanofiltration (NF) membrane was fabricated by incorporating metal-organic frameworks (MOFs) into chitosan polymeric matrix for enhanced removal of multivalent cations. The synthesized MOFs, NH2-MIL--101(Al) and NH2-MIL-101(Cr), could be homogeneously dispersed in the chitosan polymeric matrix. The morphologies of MOFs had a significant influence on the permeability of NF membranes. NF membrane filled with NH2-MIL-101(Al) with rod-like structure attained two times higher flux but similar rejection compared with that filled with NH2-MIL-101(Cr) with grainy structure. The effect of MOF loadings (NH2-MIL-101(Al)) on the membrane performance were evaluated by XRD, FTIR and SEM. These positively charged MOF/chitosan NF membranes were able to reject up to 93.0% of MgCl2, and the salt rejection followed the order of MgCl2 > CaCl2 > NaCl > Na2SO4.