Ice-confined synthesis of highly ionized 3D-quasilayered polyamide nanofiltration membranes

• 成果类型: Article
• 署名作者: Zhang, Yanqiu; Wang, Hao; Guo, Jing; Cheng, Xiquan; Han, Gang; Lau, Cher Hon; Lin, Haiqing; Liu, Shaomin; Ma, Jun; Shao, Lu
• 署名单位: Harbin Institute of Technology; Harbin Institute of Technology; Harbin Institute of Technology; Nankai University; University of Edinburgh; State University of New York (SUNY) System; University at Buffalo, SUNY; Curtin University
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-10036
• DOI: 10.1126/science.adi9531
• 发表日期: 2023-10-13
• 页码: 202-206
• 关键词: antifreeze proteins

摘要

Existing polyamide (PA) membrane synthesis protocols are underpinned by controlling diffusion-dominant liquid-phase reactions that yield subpar spatial architectures and ionization behavior. We report an ice-confined interfacial polymerization strategy to enable the effective kinetic control of the interfacial reaction and thermodynamic manipulation of the hexagonal polytype (I-h) ice phase containing monomers to rationally synthesize a three-dimensional quasilayered PA membrane for nanofiltration. Experiments and molecular simulations confirmed the underlying membrane formation mechanism. Our ice-confined PA nanofiltration membrane features high-density ionized structure and exceptional transport channels, realizing superior water permeance and excellent ion selectivity.