Department of Nanostructured Materials, Leibniz-Institut für Polymerforschung Dresden, Hohe Straße 6, 01069, Dresden, Germany; Technische Universität Dresden, Department of Chemistry, 01069, Dresden, Germany.
Department of Materials Science and Engineering, Indian Institute of Technology Delhi, New Delhi, 110016, India.
Chemosphere. 2021 Oct;280:130615. doi: 10.1016/j.chemosphere.2021.130615. Epub 2021 Apr 27.
We report a simple methodology to prepare nano-porous polysulfone membranes using zwitterionic functionalized silica nanogels with high BSA protein rejection and antifouling properties. The zwitterionic silica precursor was prepared by reacting 1,3-propane sultone with 3-aminopropyl triethoxysilane under an inert atmosphere. The precursor was in situ hydrolyzed and condensed in the polysulfone nanoporous membrane network by one-pot acidic phase inversion. The prepared membranes were characterized to establish their physicochemical nature, morphology, and basic membrane properties such as permeation, rejection, and recovery. The zwitterionic membranes showed improved hydrophilicity, membrane water uptake (∼83.5%), water permeation, BSA protein rejection (>95%), and dye rejection (congo red: >52% (∼6-fold increase); methylene blue: ∼15% (∼2-fold increase)) were improved without compromising the membrane flux and fouling resistance. Overall, we report an easy fabrication method of efficient nanocomposite zwitterionic ultrafilter membranes for water treatment with excellent flux, protein separation, filtration efficiency, and antifouling behavior.
我们报告了一种使用带有高 BSA 蛋白排斥和抗污染性能的两性离子功能化硅纳米凝胶制备纳米多孔聚砜膜的简单方法。两性离子硅前驱体是通过在惰性气氛下使 1,3-丙烷磺内酯与 3-氨丙基三乙氧基硅烷反应制备的。该前体通过一锅法酸性相转化原位水解缩合在聚砜纳米多孔膜网络中。对制备的膜进行了表征，以确定其物理化学性质、形态以及基本膜性能，如渗透、截留和恢复。两性离子膜表现出更好的亲水性、膜吸水率（83.5%）、水渗透性、BSA 蛋白截留率（>95%）和染料截留率（刚果红：>52%（6 倍增加）；亚甲基蓝：15%（2 倍增加））提高，而不会降低膜通量和抗污染阻力。总的来说，我们报告了一种用于水处理的高效纳米复合两性离子超滤膜的简单制备方法，具有出色的通量、蛋白质分离、过滤效率和抗污染性能。
