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首页> 外文期刊>Journal of industrial and engineering chemistry >High-flux and antifouling polyethersulfone nanocomposite membranes incorporated with zwitterion-functionalized graphene oxide for ultrafiltration applications
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High-flux and antifouling polyethersulfone nanocomposite membranes incorporated with zwitterion-functionalized graphene oxide for ultrafiltration applications

机译：高通量和防污聚醚砜纳米复合膜，其与两性离子官能化的石墨烯氧化物掺入，用于超滤应用

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Polyethersulfone (PES) membranes containing cysteine-functionalized graphene oxide (CGO) were prepared to enhance the ultrafiltration performance such as water flux and antifouling property. The synthesis of CGO was achieved through a simple thiol-ene click reaction between graphene oxide and cysteine. Since CGO has a zwitterionic moiety, it was observed to improve the hydrophilicity and negative charge of the membranes. The results of the ultrafiltration test showed that the separation performance of the prepared CGO/PES nanocomposite membranes was much better than that of the pristine PES membrane. For example, the CGO/PES nanocomposite membrane with 0.5 wt.% CGO content has the pure water flux and BSA rejection values of 82.6 L m(2 )h(-1) and 99.8%, respectively, while the pristine PES membrane has these values of 51.7 L m(-2) h(-1) and 96.7%, respectively, indicating that the addition of CGO successfully improves the separation performance of PES-based membrane by overcoming the intrinsic trade-off relationship between permeability and selectivity. Furthermore, CGO/PES nanocomposite membranes also showed much better antifouling property than the pristine PES membrane. For example, the flux recovery ratio of the CGO/PES nanocomposite membrane with 0.5 wt.% CGO content is 92.1%, while that of the pristine PES membrane is only 47.5%. (C) 2020 The Korean Society of industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
机译：制备含有半胱氨酸官能化的石墨烯氧化物（CGO）的聚醚砜（PES）膜，以增强超滤性能，例如水通量和防污性。通过简单的硫醇-NEE咔啉键在石墨烯和半胱氨酸之间的反应来实现CGO的合成。由于CGO具有两端离子部分，因此观察到改善膜的亲水性和负电荷。超滤试验的结果表明，制备的CgO / PES纳米复合膜的分离性能远优于原始PES膜的分离性能。例如，具有0.5重量％的CgO / PES纳米复合膜分别具有82.6Lm（2）H（2）H（-1）和99.8％的纯净水通量和BSA排斥值，而原始PES膜具有这些分别为51.7μm（-2）H（-1）和96.7％的值，表明CGO成功地通过克服渗透率和选择性之间的内在折衷关系成功提高了基于PES的膜的分离性能。此外，CgO / PES纳米复合膜还显示出比原始PES膜更好的防污性。例如，CGO / PES纳米复合膜的磁通回收率，0.5重量％。％CgO含量为92.1％，而原始PES膜的含量仅为47.5％。 （c）2020朝鲜工业与工程化学学会。 elsevier b.v出版。保留所有权利。

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