文献类型：期刊文献

英文题名：Novel high-flux positively charged composite membrane incorporating titanium-based MOFs for heavy metal removal

作者：Gong, Xin-Yu[1];Huang, Zhi-Hao[1];Zhang, Hao[1];Liu, Wei-Liang[1];Ma, Xiao-Hua[1];Xu, Zhen-Liang[1];Tang, Chuyang Y.[2]

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

年份：2020

卷号：398

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20202308792550);WOS:【SCI-EXPANDED(收录号:WOS:000561585700010)】；

基金：The authors gratefully acknowledge financial support from the National Natural Science Foundation of China (21978081) and the Fundamental Research Funds for the Central Universities (JKA012011001 and JKA012011017).

语种：英文

外文关键词：Positive charge; Nanofiltration; Metal-organic frameworks; Cross-linking; Heavy metal

摘要：In this study, a novel positively charged nanofiltration (NF) membrane was fabricated by incorporating metal-organic frameworks (MOFs) into polyethyleneimine (PEI) and trimesic acid (TMA) cross-linking system. NH2-MIL-125(Ti) provides preferential water channels to improve the permeability of the composite membrane. The effects of NH2-MIL-125(Ti) loading on the membrane morphology, structure and properties were investigated by ATR-FTIR, SEM, EDS, AFM, Zeta potential measurements, etc. Studies have shown that the optimal preparation condition was determined at 0.010 wt% NH2-MIL-125(Ti) loading. The prepared membrane exhibited a high permeability of 12.2 L.m(-2).h(-1).bar(-1) and a NiCl2 rejection of 90.9%. Compared with the pristine composite membrane, the membrane with appropriate amount of NH2-MIL-125(Ti) greatly improved the permeability (369.2%). The combination of NH2-MIL-125(Ti) and PEI/TMA cross-linking system has positive significance for the heavy metal wastewater treatment industry.