...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Separation and Purification Technology >A novel PVDF/PFSA-g-GO ultrafiltration membrane with enhanced permeation and antifouling performances
【24h】

A novel PVDF/PFSA-g-GO ultrafiltration membrane with enhanced permeation and antifouling performances

机译：一种新型PVDF / PFSA-G-GO超滤膜，具有增强的渗透和防污性能

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this work, PFSA-g-GO nanocomposites were firstly prepared by perfluorosulfonic acid (PFSA) grafted on graphene oxide (GO) in various mass ratios through an esterification reaction. Then a series of PVDF/PFSA-g-GO ultrafiltration (UF) membranes were constructed by a non-solvent induced phase separation (NIPS) method using the obtained diverse PFSA-g-GO nanocomposites as additives in different dosages. PFSA-g-GO nanocomposites and PVDF/PFSA-g-GO membranes were characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscope (SEM), atomic force microscope (AFM), water contact angle, etc. The UF performance was examined using the separation of bovine serum albumin (BSA) and humic acid (HA) as a model system. The results showed that, compared with those of PVDF membrane, the permeability and the antifouling capacity of proposed PVDF/PFSA-g-GO membranes were enhanced. For example, the pure water flux of membrane M4 (PFSA:GO mass ratio of 2.5:1, fraction of PFSA-g-GO in dope solution of 0.5 wt%) was 1.5 times higher than that of PVDF membrane, but in the meantime, the rejection of BSA and HA was up to 93.9% and 79.6%, respectively. In general, the presence of PFSA-g-GO nanocomposites in dope solutions increased the hydrophilicity and decreased the roughness of membrane surfaces, and meanwhile increased the porosity and the pore size of membranes, which was dependent upon the content and the PFSA to GO mass ratio of nanocomposites in membranes.
机译：在这项工作中，首先通过酯化反应在各种质量大量上移植在石墨烯氧化物（GO）上的全氟磺酸（PFSA）制备PFSA-G-Go纳米复合材料。然后，通过使用所得不同的PFSA-G-Go纳米复合材料作为不同剂量的添加剂，通过非溶剂诱导的相分离（NIPS）方法构建一系列PVDF / PFSA-G-GO超滤（UF）膜。 PFSA-G-GO纳米复合材料和PVDF / PFSA-G-GO膜的特征在于傅里叶变换红外光谱（FT-IR），X射线衍射（XRD），扫描电子显微镜（SEM），原子力显微镜（AFM），水接触角等。使用牛血清白蛋白（BSA）和腐殖酸（HA）作为模型系统的分离来检查UF性能。结果表明，与PVDF膜的相比，增强了所提出的PVDF / PFSA-G-GO膜的渗透率和防污容量。例如，膜M4的纯净水通量（PFSA：GO质量比为2.5：1，PFSA-G-GO型掺杂溶液的分数为0.5wt％）比PVDF膜高1.5倍，但与此同时，BSA和HA的排斥分别为93.9％和79.6％。通常，掺杂溶液中PFSA-G-GO纳米复合材料的存在增加了亲水性并降低了膜表面的粗糙度，并且同时增加了膜的孔隙率和孔径，这取决于含量和PFSA的含量和PFSA达到质量纳米复合材料在膜中的比例。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号