• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Separation and Purification Technology >Enhanced gas permeability by fabricating functionalized multi-walled carbon nanotubes and polyethersulfone nanocomposite membrane
【24h】

Enhanced gas permeability by fabricating functionalized multi-walled carbon nanotubes and polyethersulfone nanocomposite membrane

机译：通过制造功能化的多壁碳纳米管和聚醚砜纳米复合膜，提高透气性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Nanocomposite membranes consisting of 1-10wt% multi-walled carbon nanotubes (MWCNTs) embedded in polyethersulfone (PES) have been fabricated via phase inversion method by using N-methyl-2-pyrrolidone as solvent and their transportation properties are evaluated. The functional groups on MWCNTs, crystalline structure and MWCNTs dispersion were characterized by Fourier transform infrared spectroscopy, X-ray diffraction spectra, field emission scanning electron microscopy and transmission electron microscopy. The gas permeation fluxes of the derived nanocomposite membranes are increased by ～67% without sacrificing selectivity at 5 wt.% MWCNTs introduced. According to diffusivity and solubility results derived from time lag method, the carboxyl groups on MWCNTs have stronger interaction with CO2, which can increase the solubility of polar gas and limit the solubility of non-polar gas, thus benefiting the CO2/N2 gas selectivity.
机译：以N-甲基-2-吡咯烷酮为溶剂，通过相转化法制备了包埋在聚醚砜（PES）中的1-10wt％多壁碳纳米管（MWCNT）组成的纳米复合膜，并对其传输性能进行了评价。通过傅里叶变换红外光谱，X射线衍射谱，场发射扫描电子显微镜和透射电子显微镜对MWCNTs上的官能团，晶体结构和MWCNTs的分散性进行了表征。在引入5 wt。％MWCNT的情况下，衍生的纳米复合膜的气体渗透通量增加了约67％，而没有牺牲选择性。根据时滞方法得出的扩散率和溶解度结果，MWCNTs上的羧基与CO2的相互作用更强，可以增加极性气体的溶解度，限制非极性气体的溶解度，有利于CO2 / N2气体的选择性。

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