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Ultralight covalent organic framework/graphene aerogels with hierarchical porosity

Author

Listed:
  • Changxia Li

    (Technische Universität Berlin)

  • Jin Yang

    (Technische Universität Berlin)

  • Pradip Pachfule

    (Technische Universität Berlin)

  • Shuang Li

    (Technische Universität Berlin)

  • Meng-Yang Ye

    (Technische Universität Berlin)

  • Johannes Schmidt

    (Technische Universität Berlin)

  • Arne Thomas

    (Technische Universität Berlin)

Abstract

The fabrication of macroscopic objects from covalent organic frameworks (COFs) is challenging but of great significance to fully exploit their chemical functionality and porosity. Herein, COF/reduced graphene oxide (rGO) aerogels synthesized by a hydrothermal approach are presented. The COFs grow in situ along the surface of the 2D graphene sheets, which are stacked in a 3D fashion, forming an ultralight aerogel with a hierarchical porous structure after freeze-drying, which can be compressed and expanded several times without breaking. The COF/rGO aerogels show excellent absorption capacity (uptake of >200 g organic solvent/g aerogel), which can be used for removal of various organic liquids from water. Moreover, as active material of supercapacitor devices, the aerogel delivers a high capacitance of 269 F g−1 at 0.5 A g−1 and cycling stability over 5000 cycles.

Suggested Citation

  • Changxia Li & Jin Yang & Pradip Pachfule & Shuang Li & Meng-Yang Ye & Johannes Schmidt & Arne Thomas, 2020. "Ultralight covalent organic framework/graphene aerogels with hierarchical porosity," Nature Communications, Nature, vol. 11(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-18427-3
    DOI: 10.1038/s41467-020-18427-3
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    Cited by:

    1. Kit-Ying Chan & Xi Shen & Jie Yang & Keng-Te Lin & Harun Venkatesan & Eunyoung Kim & Heng Zhang & Jeng-Hun Lee & Jinhong Yu & Jinglei Yang & Jang-Kyo Kim, 2022. "Scalable anisotropic cooling aerogels by additive freeze-casting," Nature Communications, Nature, vol. 13(1), pages 1-12, December.
    2. Xiang Zhang & Jingjing Tang & Lingling Wang & Chuan Wang & Lei Chen & Xinqing Chen & Jieshu Qian & Bingcai Pan, 2024. "Nanoconfinement-triggered oligomerization pathway for efficient removal of phenolic pollutants via a Fenton-like reaction," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
    3. Shu-Yan Jiang & Zhi-Bei Zhou & Shi-Xian Gan & Ya Lu & Chao Liu & Qiao-Yan Qi & Jin Yao & Xin Zhao, 2024. "Creating amphiphilic porosity in two-dimensional covalent organic frameworks via steric-hindrance-mediated precision hydrophilic-hydrophobic microphase separation," Nature Communications, Nature, vol. 15(1), pages 1-7, December.
    4. Weijun Weng & Jia Guo, 2022. "The effect of enantioselective chiral covalent organic frameworks and cysteine sacrificial donors on photocatalytic hydrogen evolution," Nature Communications, Nature, vol. 13(1), pages 1-11, December.

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