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Engineering design of a biofilm formed on a pH-sensitive ZnO/PSf nanocomposite membrane with antibacterial properties

机译:具有抗菌性能的pH敏感ZnO / PSF纳米复合膜上形成的生物膜的工程设计

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摘要

In this research, zinc oxide (ZnO) nanoparticles were used on a matrix of a polysulfone ultrafiltration membrane to make a nanocomposite membrane with a positive surface charge for filtration of biological macromolecules. The engineering of the biofilm structure developed onto the membrane surface leads to increased membrane flux, elevated rejection of protein, and reinforced antifouling properties of the membrane. AFM results indicated that the formed biofilm has increased roughness at higher pH levels. Further, FTIR analysis proved that the extent of biological macromolecules deposited on the membrane surface is greater at higher pHs. Through engineering the conditions of nanocomposite fabrication and adjustment of pH of the protein solution, the best antifouling performance was related to the nanocomposite containing 0.5 wt% of nanoparticles at pH of 8.9. Antibacterial tests proved the antibacterial properties of the nanocomposites containing ZnO nanoparticles.
机译:在该研究中,氧化锌(ZnO)纳米颗粒用于聚砜超滤膜的基质中,使纳米复合膜具有阳性表面电荷以过滤生物大分子。 开发到膜表面上的生物膜结构的工程导致膜通量增加,蛋白质的抑制率升高,以及膜的增强防污性能。 AFM结果表明,形成的生物膜在较高的pH水平下具有增加的粗糙度。 此外,FTIR分析证明,沉积在膜表面上的生物大分子的程度在更高的pH中更大。 通过工程纳米复合材料制备的条件和蛋白质溶液的pH调节,最佳的防污性能与含有0.5wt%的pH值为8.9的纳米颗粒的纳米复合材料有关。 抗菌试验证明了含有ZnO纳米颗粒的纳米复合材料的抗菌性质。

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  • 来源
    《RSC Advances》 |2016年第113期|共13页
  • 作者单位

    Univ Tehran Coll Engn Sch Chem Engn Postal Box 11155-4563 Tehran Iran;

    Univ Tehran Coll Engn Sch Chem Engn Postal Box 11155-4563 Tehran Iran;

    Univ Isfahan Coll Engn Dept Chem Engn POB 81746-73441 Esfahan Iran;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

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