Mussel-Inspired Surface Functionalization of AEM for Simultaneously Improved Monovalent Anion Selectivity and Antibacterial Property

被引：23

作者：

Zheng, Zhihao ^{[1
]}

Xiao, Pang ^{[1
]}

Ruan, Huimin ^{[1
]}

Liao, Junbin ^{[1
]}

Gao, Congjie ^{[1
]}

Van der Bruggen, Bart ^{[2
]}

Shen, Jiangnan ^{[1
]}

机构：

[1] Zhejiang Univ Technol, Ocean Coll, Ctr Membrane Separat & Water Sci & Technol, Hangzhou 310014, Zhejiang, Peoples R China

[2] Katholieke Univ Leuven, Dept Chem Engn, Celestijnenlaan 200F, B-3001 Leuven, Belgium

来源：

MEMBRANES | 2019年 / 9卷 / 03期

基金：

中国国家自然科学基金;

关键词：

electrodialysis; antimicrobial; anion exchange membrane; permselectivity; EXCHANGE MEMBRANE; ANTIFOULING PROPERTIES; ELECTRODIALYSIS; ELECTRODEPOSITION; PERMSELECTIVITY; POLYDOPAMINE; CODEPOSITION; PERFORMANCE; TECHNOLOGY; RESISTANCE;

D O I：

10.3390/membranes9030036

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

A facile membrane surface modification process for improving permselectivity and antimicrobial property was proposed. A polydopamine (PDA) coating was firstly fabricated on pristine anion exchange membrane (AEM), followed by in situ reduction of Ag without adding any extra reductant. Finally, 2,5-diaminobenzene sulfonic acid (DSA) was grafted onto PDA layer via Michael addition reaction. The as-prepared AEM exhibited improved permselectivity (from 0.60 to 1.43) and effective inhibition of bacterial growth. In addition, the result of the long-term (90-h continuous electrodialysis) test expressed the excellent durability of the modified layer on membrane surface, because the concentration of Cl- and SO42- in diluted chamber fluctuated similar to 0.024 and 0.030 mol center dot L-1 with no distinct decline. The method described in this work makes the full use of multifunctional PDA layer (polymer-like coating, in situ reduction and post-organic reaction), and a rational design of functional AEM was established for better practical application.

引用

页数：15