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Strict molecular sieving over electrodeposited 2D-interspacing-narrowed graphene oxide membranes

Author

Listed:
  • Benyu Qi

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Xiaofan He

    (Chinese Academy of Sciences
    ShanghaiTech University)

  • Gaofeng Zeng

    (Chinese Academy of Sciences)

  • Yichang Pan

    (Nanjing Tech University)

  • Guihua Li

    (Chinese Academy of Sciences)

  • Guojuan Liu

    (Chinese Academy of Sciences)

  • Yanfeng Zhang

    (Chinese Academy of Sciences
    ShanghaiTech University)

  • Wei Chen

    (Chinese Academy of Sciences)

  • Yuhan Sun

    (Chinese Academy of Sciences
    ShanghaiTech University)

Abstract

To separate small molecules/species, it’s crucial but still challenging to narrow the 2D-interspacing of graphene oxide (GO) membranes without damaging the membrane. Here the fast deposition of ultrathin, defect-free and robust GO layers is realized on porous stainless steel hollow fibers (PSSHFs) by a facile and practical electrophoresis deposition (ED) method. In this approach, oxygen-containing groups of GO are selectively reduced, leading to a controlled decrease of the 2D channels of stacked GO layers. The resultant ED-GO@PSSHF composite membranes featured a sharp cutoff between C2 (ethane and ethene) and C3 (propane and propene) hydrocarbons and exhibited nearly complete rejections for the smallest alcohol and ion in aqueous solutions. This demonstrates the versatility of GO based membranes for the precise separation of various types of mixtures. At the same time, a robust mechanical strength of the ED-GO@PSSHF membrane is also achieved due to the enhanced interaction at GO/support and GO/GO interfaces.

Suggested Citation

  • Benyu Qi & Xiaofan He & Gaofeng Zeng & Yichang Pan & Guihua Li & Guojuan Liu & Yanfeng Zhang & Wei Chen & Yuhan Sun, 2017. "Strict molecular sieving over electrodeposited 2D-interspacing-narrowed graphene oxide membranes," Nature Communications, Nature, vol. 8(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_s41467-017-00990-x
    DOI: 10.1038/s41467-017-00990-x
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    Cited by:

    1. Junhyeok Kang & Yeongnam Ko & Jeong Pil Kim & Ju Yeon Kim & Jiwon Kim & Ohchan Kwon & Ki Chul Kim & Dae Woo Kim, 2023. "Microwave-assisted design of nanoporous graphene membrane for ultrafast and switchable organic solvent nanofiltration," Nature Communications, Nature, vol. 14(1), pages 1-13, December.

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