• 文献标题:   Cross-linked graphene membrane for high-performance organics separation of emulsions
  • 文献类型:   Article
  • 作  者:   LI GF, WANG X, TAO L, LI YS, QUAN KC, WEI Y, CHI LF, YUAN QP
  • 作者关键词:   graphene membrane, organics permeation, crossflow, surface wettability, crosslinkage
  • 出版物名称:   JOURNAL OF MEMBRANE SCIENCE
  • ISSN:   0376-7388 EI 1873-3123
  • 通讯作者地址:   Beijing Univ Chem Technol
  • 被引频次:   26
  • DOI:   10.1016/j.memsci.2015.08.042
  • 出版年:   2015

▎ 摘  要

Recently, graphene oxide (GO) membranes are highly attractive for their exceptional separation performance. However, their sieving characteristics limit GO membranes for some important applications where organics are preferred or organic solvents are employed. In this work, a novel cross-linked graphene (CG) membrane is fabricated through compressing and then reducing a cross-linked GO aerogel. It achieved high-performance of organics separation with high flux (225 L m(-2) h(-1)) and purity ( >99.98%) even in a cross-flow separation model, where water was intercepted. Deep insight revealed that both the converted surface wettability and the remaining channels in the CG membrane were crucial for the high-performance of organics separation. Beyond that, this CG membrane offers many advantages, such as facile preparation, self-supporting, structural stability and adaptation in harsh acidic/basic/high-temperature conditions, demonstrating its great potential for practical applications. (C) 2015 Elsevier B.V. All rights reserved.