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Improvement of Hydrophilicity for Polyamide Composite Membrane by Incorporation of Graphene Oxide-Titanium Dioxide Nanoparticles
Journal of Analytical Methods in Chemistry ( IF 2.6 ) Pub Date : 2020-12-30 , DOI: 10.1155/2020/6641225
Thu Hong Anh Ngo 1 , Chau Thi Minh Nguyen 1 , Khai Dinh Do 1 , Quan Xuan Duong 1 , Nghia Hieu Tran 1 , Hoan Thi Vuong Nguyen 2 , Dung Thi Tran 1
Affiliation  

In this work, the polyamide (PA) membrane surface has been modified by coating of nanomaterials including graphene oxide (GO) and titanium dioxide (TiO2) to enhance membrane separation and antifouling properties. The influence of surface modification conditions on membrane characteristics has been investigated and compared with a base membrane. Membrane surface properties were determined through scanning electron microscope (SEM) images and Fourier transform infrared-attenuated total reflectance (FTIR-ATR) spectroscopy. Membrane separation performance was determined through the possibility for the removal of methylene blue (MB) in water. Membrane antifouling property was evaluated by the maintained flux ratios (%) after 120 minutes of filtration. The experimental results showed that the appearance of hydrophilic groups after coating of GO and TiO2 nanocomposite materials with or without UV irradiation onto membrane surface made an improvement in the separation property of the coated membranes. The membrane flux increased from 28% to 61%; meanwhile, the antifouling property of the coated membranes was improved clearly, especially for UV-irradiated PA/GO-TiO2 membrane.

中文翻译:

通过掺入氧化石墨烯-二氧化钛纳米颗粒改善聚酰胺复合膜的亲水性

在这项工作中,聚酰胺(PA)膜表面已通过涂覆纳米材料进行了改性,包括氧化石墨烯(GO)和二氧化钛(TiO 2),以增强膜分离和防污性能。已经研究了表面改性条件对膜特性的影响,并将其与基础膜进行了比较。通过扫描电子显微镜(SEM)图像和傅立叶变换红外衰减全反射(FTIR-ATR)光谱确定膜表面性能。通过去除水中亚甲基蓝(MB)的可能性来确定膜的分离性能。在过滤120分钟后,通过维持的通量比(%)来评价膜的防污性能。实验结果表明,GO和TiO 2包覆后亲水基团的出现在膜表面上进行或不进行紫外线照射的纳米复合材料均改善了涂层膜的分离性能。膜通量从28%增加到61%;同时,涂膜的防污性能明显提高,尤其是对紫外线辐射的PA / GO-TiO 2膜。
更新日期:2020-12-30
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