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Microwave-assisted design of nanoporous graphene membrane for ultrafast and switchable organic solvent nanofiltration

Author

Listed:
  • Junhyeok Kang

    (Yonsei University)

  • Yeongnam Ko

    (Konkuk University)

  • Jeong Pil Kim

    (Yonsei University)

  • Ju Yeon Kim

    (Yonsei University)

  • Jiwon Kim

    (Yonsei University)

  • Ohchan Kwon

    (Yonsei University)

  • Ki Chul Kim

    (Konkuk University)

  • Dae Woo Kim

    (Yonsei University)

Abstract

Layered two-dimensional materials can potentially be utilized for organic solvent nanofiltration (OSN) membrane fabrication owing to their precise molecular sieving by the interlayer structure and excellent stability in harsh conditions. Nevertheless, the extensive tortuosity of nanochannels and bulky solvent molecules impede rapid permeability. Herein, nanoporous graphene (NG) with a high density of sp2 carbon domain was synthesized via sequential thermal pore activation of graphene oxide (GO) and microwave-assisted reduction. Due to the smooth sp2 carbon domain surfaces and dense nanopores, the microwave-treated nanoporous graphene membrane exhibited ultrafast organic solvent permeance (e.g., IPA: 2278 LMH/bar) with excellent stability under practical cross-flow conditions. Furthermore, the membrane molecular weight cut-off (MWCO) is switchable from 500 Da size of molecule to sub-nanometer-size molecules depending on the solvent type, and this switching occurs spontaneously with solvent change. These properties indicate feasibility of multiple (both binary and ternary) organic mixture separation using a single membrane. The nanochannel structure effect on solvent transport is also investigated using computation calculations.

Suggested Citation

  • 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.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-36524-x
    DOI: 10.1038/s41467-023-36524-x
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    References listed on IDEAS

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    1. 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.
    2. Zongyao Zhou & Xiang Li & Dong Guo & Digambar B. Shinde & Dongwei Lu & Long Chen & Xiaowei Liu & Li Cao & Ammar M. Aboalsaud & Yunxia Hu & Zhiping Lai, 2020. "Electropolymerization of robust conjugated microporous polymer membranes for rapid solvent transport and narrow molecular sieving," Nature Communications, Nature, vol. 11(1), pages 1-9, December.
    3. Yu-Sheng Su & Arumugam Manthiram, 2012. "Lithium–sulphur batteries with a microporous carbon paper as a bifunctional interlayer," Nature Communications, Nature, vol. 3(1), pages 1-6, January.
    4. Wanyu Zhang & Hai Xu & Fei Xie & Xiaohua Ma & Bo Niu & Mingqi Chen & Hongyu Zhang & Yayun Zhang & Donghui Long, 2022. "General synthesis of ultrafine metal oxide/reduced graphene oxide nanocomposites for ultrahigh-flux nanofiltration membrane," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
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    Cited by:

    1. Hai Liu & Xinxi Huang & Yang Wang & Baian Kuang & Wanbin Li, 2024. "Nanowire-assisted electrochemical perforation of graphene oxide nanosheets for molecular separation," Nature Communications, Nature, vol. 15(1), pages 1-11, December.

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