Alteration of the morphology of polyvinylidene fluoride membrane by incorporating MOF‐199 nanomaterials for improving water permeation with antifouling and antibacterial property,Journal of the Chinese Chemical Society

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Alteration of the morphology of polyvinylidene fluoride membrane by incorporating MOF‐199 nanomaterials for improving water permeation with antifouling and antibacterial property
Journal of the Chinese Chemical Society ( IF 1.6 ) Pub Date : 2020-05-07 , DOI: 10.1002/jccs.202000055
Hai‐Tao Wang _{1,

2} , De Ao ₁ , Mei‐Chan Lu ₁ , Na Chang _{2,

3}

Affiliation

MOF‐199@PVDF composite membranes are prepared by blending with different amounts of ultrasonic synthesized MOF‐199 nanomaterials for improving the pure water flux (PWF) and achieving better antifouling and antibacterial performance. The membrane morphology, elemental composition, and surface properties are analyzed by various means of characterizations, including scanning electron microscopy, energy‐dispersive X‐ray spectroscopy, and water contact angle measurements. The performance of the modified membranes is also determined from the perspective of the PWF, bovine serum albumin rejection, as well as antifouling and antibacterial properties. Due to the variation in the viscosity of dope solution, the composite membranes possess remarkably different morphology, and the M5 membrane, which exhibited a sponge‐like structure, the largest surface pore size, and the highest porosity, shows the highest PWF, reaching up to 185.05 L/m²h. Moreover, with the incorporation of MOF‐199 nanocrystals, the antifouling property, together with the antibacterial property, toward both gram‐negative bacteria and gram‐positive bacteria, based on M5 and M7 membranes, increases dramatically compared with the pristine polyvinylidene fluoride membrane. In addition, the long‐term permeation performance and copper leakage of the membrane are investigated. As a result, the composite membrane, M5, shows great potential in real water treatment.

中文翻译：

通过加入MOF-199纳米材料来改变聚偏二氟乙烯膜的形态，以改善水的渗透性并具有防污和抗菌性能

MOF‐199 @ PVDF复合膜是通过与不同数量的超声合成的MOF‐199纳米材料混合制备的，以改善纯净水通量（PWF）并实现更好的防污和抗菌性能。膜的形态，元素组成和表面性质可通过多种表征方法进行分析，包括扫描电子显微镜，能量色散X射线光谱法和水接触角测量。还从PWF，牛血清白蛋白排斥以及防污和抗菌性能的角度确定了改性膜的性能。由于涂料溶液粘度的变化，复合膜的形态明显不同，而M5膜表现出海绵状结构，²小时此外，通过掺入MOF-199纳米晶体，与原始聚偏二氟乙烯膜相比，基于M5和M7膜的革兰氏阴性菌和革兰氏阳性菌的防污性能以及抗菌性能大大提高。此外，还研究了膜的长期渗透性能和铜泄漏。结果，复合膜M5在实际水处理中显示出巨大潜力。

更新日期：2020-05-07

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