Fabrication of Oligoaniline-Based Electrically Responsive Polyamide Membranes for High-Performance Molecular Nanofiltration

• DOI: 10.1021/acs.iecr.3c04647
• Publication Date: 2024-03-27T12:04:49Z
• Authors: Luqi Xiao; Ju Bai; Xiaobo Chen; Wei Lai; Lili Gong; Hongyan Liu; Linglong Shan; Shuangjiang Luo
• Keywords: Nanofiltration

Smart responsive nanofiltration (NF) membranes generated widespread interest for their ability to dynamically regulate permselectivity during operation according the requirements of separation. However, reported smart were usually impeded by limited stability as problem compatibility between conductive materials and a polymer membrane. Herein, we report high-performance electrically polyamide (PA) membrane molecular NF introducing an oligoaniline amino-capped aniline trimer (AT) involved in formation PA The prepared via interfacial polymerization (IP) AT trimesoyl chloride (TMC) on porous substrate. influence AT, TMC, dopant concentration performance was systematically investigated. results demonstrate that introduction significantly enhances separation membranes. fabricated exhibit excellent rejection toward small organic molecules while maintaining high water permeance long-term stability. Moreover, show remarkable electrocyclic responsiveness, allowing effective control rate applying external electric field. improved is attributed unique electrical structural properties doping ionic liquids. Our findings provide valuable insights development