• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >A novel surface cross-linked GO-based membrane with superior separation performance
【24h】

A novel surface cross-linked GO-based membrane with superior separation performance

机译：具有优异分离性能的新型表面交联GO基膜

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

摘要

In this study, a novel procedure of fabricating a high performance graphene oxide (GO) composite membrane with high water permeability and selectivity was developed. The GO-based composite membrane, which was fabricated by assembling GO nanosheets on a polyacrylonitrile (PAN) ultrafiltration substrate using vacuum filtration method, was cross-linked by 1,3,5-benzenetricarbonyl trichloride (TMC). Intriguingly, the cross-linking reaction that just occurred at the surface of the GO layer not only provides a stable spacing of the surface GO nanosheets, which ensures the separation accuracy of the composite membrane, but also keeps a high water transport efficiency when passing through the uncross-linked interlamination channels of the GO layer. Pervaporation performance testing, using a water/ethanol feed solution, demonstrated that the separation accuracy and water flux for the optimized surface cross-linked GO composite membrane (TGOm) were significantly better or at least comparable to the values from the GO composite membrane (GOm), and the separation factor of TGOm was enhanced almost several fold. Additionally, with the increasing temperature of the feed solution, the TGOm still maintained an “ideal” separation accuracy, indicating the fine thermostability of the cross-linked membrane.
机译：在这项研究中，开发了一种具有高透水性和高选择性的高性能氧化石墨烯（GO）复合膜的制备方法。通过使用真空过滤方法将GO纳米片组装在聚丙烯腈（PAN）超滤基板上而制成的GO基复合膜通过1,3,5-三氯三羰基苯（TMC）交联。有趣的是，刚发生在GO层表面的交联反应不仅提供了表面GO纳米片的稳定间距，这确保了复合膜的分离精度，而且在通过时保持了较高的水传输效率GO层的未交联的层间通道。使用水/乙醇进料溶液进行的全蒸发性能测试表明，优化的表面交联GO复合膜（TGOm）的分离精度和水通量显着优于或至少可与GO复合膜（GOm）的值相比），TGOm的分离因子几乎提高了几倍。另外，随着进料溶液温度的升高，TGOm仍保持“理想的”分离精度，表明交联膜的优良的热稳定性。

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