文献类型：期刊文献

英文题名：Hydrophilic yolk-shell ZIF-8 modified polyamide thin-film nanocomposite membrane with improved permeability and selectivity

作者：Li, Meng-Ping[1];Zhang, Xin[1];Zhang, Hao[1];Liu, Wei-Liang[1];Huang, Zhi-Hao[1];Xie, Fei[1];Ma, Xiao-Hua[1];Xu, Zhen-Liang[1]

机构：[1]East China Univ Sci & Technol, Membrane Sci & Engn R&D Lab, Chem Engn Res Ctr, Sch Chem Engn,Shanghai Key Lab Multiphase Mat Che, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2020

卷号：247

外文期刊名：SEPARATION AND PURIFICATION TECHNOLOGY

收录：;EI(收录号：20201908613893);WOS:【SCI-EXPANDED(收录号:WOS:000536142200038)】；

基金：The authors gratefully acknowledge financial support from the National Natural Science Foundation of China (21978081).

语种：英文

外文关键词：Yolk-shell ZIF-8; Tannic acid; Polyamide TFN membrane; Desalination

摘要：Zeolitic imidazolate framework-8 (ZIF-8) crystals with yolk-shell features were successfully synthesized through synergistic etching and surface functionalization method. The obtained yolk-shell ZIF-8 crystals (named as T-ZIF-8) presented excellent hydrophilicity and perfect dispersity in aqueous solution. Then polyamide thin-film nanocomposite (TFN) reverse osmosis (RO) membranes were fabricated by using the functionalized T-ZIF-8 as nanofillers. The obtained TFN RO membrane exhibited an improved surface hydrophilicity, an increased permeability of 1.1 L m(-2) h(-1) bar(-1) (approximately 1.5 times) and a high rejection of 99.8% for NaCl aqueous solution. It has potential to resolve the trade-off problem between permeability and selectivity. Moreover, the obtained TFN RO membrane showed an excellent stability during a 25 h filtration test due to the enhanced compatibility between nanofillers and polyamide, which implied that the developed TFN RO membrane would have a great potential in desalination.