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A novel nanofiltration membrane with simultaneously enhanced antifouling and antibacterial properties

机译：一种新型纳滤膜，具有同时增强的防污性和抗菌性能

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摘要

A novel nanofiltration membrane prepared by modification of a commercial membrane surface is fabricated using polydopamine (PDA) and hydroxyl propyl trimethyl ammonium chloride chitosan (HACC) mixed with chitosan (CN) and chelated silver (Ag) nanoparticles. The surface chemical composition, cross-sectional morphology, hydrophilicity and surface structure of the prepared membranes were examined by scanning electron microscopy, water contact angle measurements, and atomic force microscopy, respectively. The membrane performance was evaluated in terms of volumetric flux and protein rejection. In addition, the antifouling and antibacterial properties of the membranes were also explored. The results demonstrated that the prepared membranes exhibited an excellent antifouling property due to their three-layer architecture and it provided a special layer to promote the antibacterial property. According to the results, the modified membrane has a significantly improved flux recovery rate (over 96%). Besides, the antibacterial activity tests showed that the proposed three-layer architecture modification extensively prevented bacterial growth on the membrane surface.
机译：使用与壳聚糖（CN）和螯合的银（Ag）纳米粒子混合的多莫多胺（PDA）和羟基丙基氯化铵（HACC）制备通过改性商业膜表面制备的新型纳滤膜。通过扫描电子显微镜，水接触角测量和原子力显微镜检查制备膜的表面化学成分，横截面形态，亲水性和表面结构。在体积通量和蛋白质排斥方面评价膜性能。此外，还探讨了膜的防污性和抗菌性质。结果表明，由于其三层架构，所制备的膜具有优异的防污性能，并且它提供了一种特殊的层来促进抗菌性。根据结果​​，改性膜具有显着改善的助焊剂回收率（超过96％）。此外，抗菌活性试验表明，所提出的三层架构改性广泛防止膜表面上的细菌生长。

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  • 来源
    《RSC Advances》 |2019年第11期|共11页
  • 作者

    Qi Yawei; Zhu Lifang; Gao Congjie; Shen Jiangnan;

  • 作者单位

    Zhejiang Univ Technol Ocean Coll Ctr Membrane Separat &

    Water Sci &

    Technol Hangzhou 310014 Zhejiang Peoples R China;

    Zhejiang Univ Technol Ocean Coll Ctr Membrane Separat &

    Water Sci &

    Technol Hangzhou 310014 Zhejiang Peoples R China;

    Zhejiang Univ Technol Ocean Coll Ctr Membrane Separat &

    Water Sci &

    Technol Hangzhou 310014 Zhejiang Peoples R China;

    Zhejiang Univ Technol Ocean Coll Ctr Membrane Separat &

    Water Sci &

    Technol Hangzhou 310014 Zhejiang Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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