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Facile fabrication of covalent organic framework functionalized superhydrophobic porous sponges for highly efficient water/oil separation

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Abstract

Considering the serious environmental pollution and economic losses caused by increasing oil spills and chemical leaks, effective and eco-friendly methods of oil/water separation should be urgently developed. Herein, a facile strategy (about 20 min) was developed for integrating covalent organic framework (COF) particles with melamine sponges (MS) by covalent bonding, and then a superhydrophobic COF/MS composite (denoted OA-CP@MS) could be further obtained by following modification with a 1-octadecylamine/water dispersion. Specifically, the synthesis process was developed under a mild condition that avoid the need for sealing and high-temperature treatments. It was proven that the fabricated OA-CP@MS presented a prominent absorption capacity for various organic reagents, in which adsorption capacity of chloroform could be up to 173 g/g. Owing to its excellent chemical robustness in strong alkaline and saline environments and in various organic solvents, the prepared OA-CP@MS showed a great potential to perform oil/water separation in complex practical conditions. Its rapid preparation process, fluorine-free treatment, and water-based modification would extend the application of COF materials in oil/water separation.

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Authors and Affiliations

  1. School of Materials and Energy, Lanzhou University, Lanzhou, 730000, China

    Jing Wang, FuShan Wang, YongJun Zhou, Peng Gao & XueHu Men

  2. Science and Technology on Low-Light-Level Night Vision Laboratory, Xi’an, 710065, China

    YuJian Zhou

Authors
  1. Jing Wang
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  2. FuShan Wang
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  3. YuJian Zhou
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  4. YongJun Zhou
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  5. Peng Gao
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  6. XueHu Men
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Corresponding author

Correspondence to XueHu Men.

Additional information

This work was supported by the National Natural Science Foundation of China (Grant No. 21876073), and the Natural Science Foundation of Gansu Province, China (Grant No. 20JR5RA235).

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The supporting information is available online at tech.scichina.com and link.springer.com. The supporting materials are published as submitted, without typesetting or editing. The responsibility for scientific accuracy and content remains entirely with the authors.

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Facile fabrication of covalent organic framework functionalized superhydrophobic porous sponges for highly efficient water/oil separation

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Wang, J., Wang, F., Zhou, Y. et al. Facile fabrication of covalent organic framework functionalized superhydrophobic porous sponges for highly efficient water/oil separation. Sci. China Technol. Sci. 65, 2631–2640 (2022). https://doi.org/10.1007/s11431-022-2105-4

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  • DOI: https://doi.org/10.1007/s11431-022-2105-4

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