• 文献标题:   Shear-aligned graphene oxide laminate/Pebax ultrathin composite hollow fiber membranes using a facile dip-coating approach
  • 文献类型:   Article
  • 作  者:   ZHANG YT, SHEN Q, HOU JW, SUTRISNA PD, CHEN V
  • 作者关键词:  
  • 出版物名称:   JOURNAL OF MATERIALS CHEMISTRY A
  • ISSN:   2050-7488 EI 2050-7496
  • 通讯作者地址:   Univ New South Wales
  • 被引频次:   19
  • DOI:   10.1039/c6ta10395b
  • 出版年:   2017

▎ 摘  要

Graphene oxide (GO) has been considered as a promising candidate for molecular separation because of its capability to form highly efficient gas flow intergalleries. However, a major challenge is the lack of a facile, scalable, low-costmembrane fabrication approach, especially for the hollow fiber composite membrane with a thin selective layer. By using a facile dip-coating technique, we prepared a shear-aligned GO/Pebax composite hollow fiber membrane on a porous polymeric support. The incorporation of the aligned GO laminates significantly improved the original Pebax (polyethylene oxide-polyamide block copolymer) membrane permeancewithout compromising the CO2/N-2 selectivity, and the composite membrane had good operational stability and enhanced mechanical strength. We further investigated the formation mechanism of the shear-aligned GO structure and discovered that the control of the withdrawal speed and liquid film thickness was a key factor. This dip-coating technique offers significant opportunities to exploit the GO-based membrane for industrial CO2 capture.