UP - logo
E-viri
Celotno besedilo
Recenzirano
  • Mussel-inspired zwitterioni...
    Ji, Yan-Li; Qian, Wei-Jie; An, Quan-Fu; Huang, Shu-Hsien; Lee, Kueir-Rarn; Gao, Cong-Jie

    Journal of membrane science, 02/2019, Letnik: 572
    Journal Article

    Nanocomposite membranes have gained growing attention in various application fields, especially in the separation and purification of resource substances. However, the nanomaterials and their membranes fabrication strategies usually suffer from complex procedures, high-energy consumption and lack of universality. Inspired by the unique self-polymerization and adhesion characteristic of marine mussels, we proposed a facile and versatile approach to synthesize zwitterionic dopamine nanoparticles via dopamine induced oxidative polymerization method, followed by the interfacial cross-linking on porous supporting layer to fabricate thin-film nanocomposite (TFN) membranes. The influences of nanoparticle composition, particle size and loading content on the membrane structure and performance were studied to optimize the fabrication conditions. The resultant TFN membrane exhibited high water permeance (98.0 L m−2 h−1 MPa−1) and good selectivity for di-/mono-valent salts (SNa2SO4/NaCl = ~4.50, SMgSO4/NaCl = ~4.49). Furthermore, by utilizing the protein, polysaccharide, and humic acid as model foulants, the zwitterionic dopamine nanoparticles based TFN membranes have been demonstrated with excellent fouling resistance and cleaning recovery property in separation applications. Display omitted •Zwitterionic dopamine nanoparticles (ADNPs) were synthesized via dopamine induced oxidative polymerization method.•Thin-film nanocomposite membranes based on ADNPs were prepared by interfacial polymerization.•The membrane had high water permeability and good salt selectivity.•The membrane exhibited good stability and enhanced anti-fouling property.