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Antifouling graphene oxide membranes for oil-water separation via hydrophobic chain engineering

Author

Listed:
  • Chao Yang

    (Tianjin University)

  • Mengying Long

    (Tianjin University)

  • Cuiting Ding

    (Tianjin University)

  • Runnan Zhang

    (Tianjin University
    Zhejiang Institute of Tianjin University
    Haihe Laboratory of Sustainable Chemical Transformations)

  • Shiyu Zhang

    (Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City)

  • Jinqiu Yuan

    (Tianjin University)

  • Keda Zhi

    (Tianjin University)

  • Zhuoyu Yin

    (Tianjin University)

  • Yu Zheng

    (Tianjin University)

  • Yawei Liu

    (Chinese Academy of Sciences)

  • Hong Wu

    (Tianjin University
    Zhejiang Institute of Tianjin University
    Haihe Laboratory of Sustainable Chemical Transformations
    Tianjin University)

  • Zhongyi Jiang

    (Tianjin University
    Zhejiang Institute of Tianjin University
    Haihe Laboratory of Sustainable Chemical Transformations
    Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City)

Abstract

Engineering surface chemistry to precisely control interfacial interactions is crucial for fabricating superior antifouling coatings and separation membranes. Here, we present a hydrophobic chain engineering strategy to regulate membrane surface at a molecular scale. Hydrophilic phytic acid and hydrophobic perfluorocarboxylic acids are sequentially assembled on a graphene oxide membrane to form an amphiphilic surface. The surface energy is reduced by the introduction of the perfluoroalkyl chains while the surface hydration can be tuned by changing the hydrophobic chain length, thus synergistically optimizing both fouling-resistance and fouling-release properties. It is found that the surface hydration capacity changes nonlinearly as the perfluoroalkyl chain length increases from C4 to C10, reaching the highest at C6 as a result of the more uniform water orientation as demonstrated by molecular dynamics simulations. The as-prepared membrane exhibits superior antifouling efficacy (flux decline ratio

Suggested Citation

  • Chao Yang & Mengying Long & Cuiting Ding & Runnan Zhang & Shiyu Zhang & Jinqiu Yuan & Keda Zhi & Zhuoyu Yin & Yu Zheng & Yawei Liu & Hong Wu & Zhongyi Jiang, 2022. "Antifouling graphene oxide membranes for oil-water separation via hydrophobic chain engineering," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-35105-8
    DOI: 10.1038/s41467-022-35105-8
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    References listed on IDEAS

    as
    1. Arun K. Kota & Gibum Kwon & Wonjae Choi & Joseph M. Mabry & Anish Tuteja, 2012. "Hygro-responsive membranes for effective oil–water separation," Nature Communications, Nature, vol. 3(1), pages 1-8, January.
    2. B. L. Dargaville & D. W. Hutmacher, 2022. "Water as the often neglected medium at the interface between materials and biology," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    3. James A. Callow & Maureen E. Callow, 2011. "Trends in the development of environmentally friendly fouling-resistant marine coatings," Nature Communications, Nature, vol. 2(1), pages 1-10, September.
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    Cited by:

    1. Zehang Cui & Yachao Zhang & Zhicheng Zhang & Bingrui Liu & Yiyu Chen & Hao Wu & Yuxuan Zhang & Zilong Cheng & Guoqiang Li & Jiale Yong & Jiawen Li & Dong Wu & Jiaru Chu & Yanlei Hu, 2024. "Durable Janus membrane with on-demand mode switching fabricated by femtosecond laser," Nature Communications, Nature, vol. 15(1), pages 1-10, December.

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