articleEnvironmental Science & TechnologyMar 11, 2025Closed access

N -Oxide Zwitterionic-Based Antifouling Loose Nanofiltration Membranes with Superior Water Permeance and Effective Dye/Salt Separation

ZWZiming WangZWZiming WangSYShideng YuanDWDong WangNZNa Zhang

Shandong University · State Key Laboratory of Pollution Control and Resource Reuse · +1 more institution

PubMed
Indexed incrossrefpubmed

Abstract

Loose nanofiltration (LNF) membranes with high permeance and separation selectivity are highly desired for the effective separation of organic dyes and inorganic salts. Herein, a novel polyamide LNF membrane was fabricated using zwitterionic amine reactant trimethylamine N-oxide-based polyethylenimine (TPEI) and trimesoyl chloride (TMC) via interfacial polymerization (IP). A thin, loose, and smooth polyamide layer was formed due to the low diffusion rate and modified chemical structure of TPEI. The optimized membrane (NF-TPEI) exhibited an extremely high water permeance of 213.0 L m–2 h–1 bar–1, accompanied by outstanding dye rejections of Congo Red (99.8%), Coomassie Brilliant Blue R250 (99.5%), and Evans…

Citation impact

52
total citations
FWCI
32.57
Percentile
100%
References
59
Citations per year

Authors

8

Topics & keywords

Topics
Keywords
  • Permeance
  • Nanofiltration
  • Biofouling
  • Membrane
  • Salt (chemistry)
  • Oxide
  • Chemistry
  • Salt water
UN Sustainable Development Goals
  • Clean water and sanitation
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