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首页> 外文期刊>RSC Advances >Facile and low-cost approach towards a PVDF ultrafiltration membrane with enhanced hydrophilicity and antifouling performance via graphene oxide/water-bath coagulation
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Facile and low-cost approach towards a PVDF ultrafiltration membrane with enhanced hydrophilicity and antifouling performance via graphene oxide/water-bath coagulation

机译：通过石墨烯氧化物/水浴凝固具有增强的亲水性和防污性能的PVDF超滤膜的容易和低成本方法

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摘要

Addressed herein is a facile and low-cost approach to endow hydrophobic polyvinylidene fluoride (PVDF) membranes with reliable hydrophilicity and antifouling properties. Porous asymmetric hydrophilic membranes with tunable morphology were facilely fabricated via phase inversion using an aqueous solution of graphene oxide (GO) as the coagulation bath. An increment in pore size and surface roughness was observed for membranes treated by a GO/water-coagulation bath (GB). The bovine serum albumin rejection of GB-treated membranes increased by 38.99% when the concentration of GO in the coagulation bath was 0.5 g L-1. The contact angle of membranes decreased from 75.9 degrees to 58.8 degrees and the water flux increased by 140% when the dosage of GO was 2 g L-1. Furthermore, fouling resistances of membranes revealed that GB-treated membranes had a higher flux recovery ratio (85.7%) than pristine PVDF (43.3%). Meanwhile, the protein adsorption of GB-treated membranes was decreased by 69.3% compared with that of pristine PVDF membranes. The cost of the membranes can be lowered by using a GB approach compared with GO-mixed matrix membranes because of the reusability of GO in a coagulation bath. This research presents an effective method to tailor membrane performance via GB rather than embedding GO in the membrane matrix.
机译：这里寻址的是一种容易和低成本的方法来赋予疏水性聚偏二氟乙烯（PVDF）膜具有可靠的亲水性和防污性能。使用石墨烯水溶液（GO）作为凝固浴，通过相反转术通过相反转施加多孔不对称亲水性膜。对于通过GO /水凝固浴（GB）处理的膜，观察到孔径和表面粗糙度的增量。当凝固浴中的浓度为0.5g l-1时，GB处理膜的牛血清白蛋白抑制率增加了38.99％。膜的接触角从75.9度降低至58.8度，当GO的剂量为2g l-1时，水通量增加140％。此外，膜的污垢抗性显示出GB处理的膜的助焊剂恢复比（85.7％）比原始PVDF（43.3％）。同时，与原始PVDF膜相比，GB处理膜的蛋白质吸附量减少了69.3％。通过使用Gb方法与Go-Match基质膜相比，可以降低膜的成本，因为在凝固浴中的可重复使用。该研究提出了一种通过GB定制膜性能而不是嵌入膜基质的有效方法。

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  • 来源
    《RSC Advances》 |2015年第11期|共10页
  • 作者

    Wu Tengfei; Zhou Baoming; Zhu Ting; Shi Jie; Xu Zhiwei; Hu Chuansheng; Wang Jiajun;

  • 作者单位

    Tianjin Polytech Univ Sch Text State Key Lab Hollow Fiber Membrane Mat &

    Proc Tianjin 300387 Peoples R China;

    Tianjin Polytech Univ Sch Text State Key Lab Hollow Fiber Membrane Mat &

    Proc Tianjin 300387 Peoples R China;

    Tianjin Polytech Univ Sch Text State Key Lab Hollow Fiber Membrane Mat &

    Proc Tianjin 300387 Peoples R China;

    Tianjin Polytech Univ Sch Text State Key Lab Hollow Fiber Membrane Mat &

    Proc Tianjin 300387 Peoples R China;

    Tianjin Polytech Univ Sch Text State Key Lab Hollow Fiber Membrane Mat &

    Proc Tianjin 300387 Peoples R China;

    Tianjin Polytech Univ Sch Text State Key Lab Hollow Fiber Membrane Mat &

    Proc Tianjin 300387 Peoples R China;

    Brookhaven Natl Lab Photon Sci Directorate Upton NY 11973 USA;

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