文献类型：期刊文献

英文题名：Highly efficient monovalent ion transport enabled by ionic crosslinking-induced nanochannels

作者：Zhang, Yiren[1];Lin, Yuqing[1];Ying, Jiadi[1];Zhang, Wei[1];Jin, Yan[1];Matsuyama, Hideto[2];Yu, Jianguo[1]

机构：[1]East China Univ Sci & Technol, Sch Resources & Environm Engn, Natl Engn Res Ctr Comprehens Utilizat Salt Lake R, Shanghai, Peoples R China;[2]Kobe Univ, Dept Chem Sci & Engn, Res Ctr Membrane & Film Technol, Kobe, Hyogo, Japan

年份：2022

卷号：68

期号：11

外文期刊名：AICHE JOURNAL

收录：;EI(收录号：20222812354766);WOS:【SCI-EXPANDED(收录号:WOS:000823672500001)】；

基金：Open Project of Stat Key Laboratory of Chemical Engineering, Grant/Award Number: SKL-ChE-20C03

语种：英文

外文关键词：electrodialysis; ion exchange membrane; ionic crosslinking; ionic sieving; monovalent selectivity

摘要：Charge-governed ion transport is of significant importance to industrial development, and advanced membrane materials with fast and selective ionic transport are essential components. In cell membranes, ionic transport is mainly determined by the charge-governed protein channels, representing an architecture with functional differentiation. Inspired by this, a novel class of membranes was developed by ionically crosslinking sulfonated (poly[ether ether ketone]) and quaternized poly(2,6-dimethyl-1,4-phenylene oxide) to construct the cationic conductive biomimetic nanochannels. Ionic crosslinking was tailored to realize nanophase separation and efficient ion transport mainly based on surface chemistry without altering the scaffold feature of polymeric pore channels. The best-performing ionic crosslinking membrane exhibited a high ionic permeation (2.23 mol center dot m(-2)center dot h(-1) for K+) and high cationic selectivity (7.91 for K+/Mg2+), which were comparable with the commercial monovalent cation permselective CIMS membrane, owing to the negligent surface resistance toward monovalent cations but strong positively charged repulsion against divalent cations.