Hydrogen-Bond-Mediated Self-Assembly of Carbon-Nitride-Based Photo-Fenton-like Membranes for Wastewater Treatment

  • Huachun Lan
    Huachun Lan
    Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
    More by Huachun Lan
  • Feng Wang
    Feng Wang
    Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
    College of Energy and Environmental Engineering, Hebei University of Engineering, Handan, 056038, China
    More by Feng Wang
  • Mei Lan
    Mei Lan
    College of Energy and Environmental Engineering, Hebei University of Engineering, Handan, 056038, China
    More by Mei Lan
  • Xiaoqiang An*
    Xiaoqiang An
    Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
    *Phone: 86-10-62790565. E-mail: [email protected]
    More by Xiaoqiang An
  • Huijuan Liu
    Huijuan Liu
    Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
    More by Huijuan Liu
  • , and 
  • Jiuhui Qu
    Jiuhui Qu
    Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
    More by Jiuhui Qu
Cite this: Environ. Sci. Technol. 2019, 53, 12, 6981–6988
Publication Date (Web):May 22, 2019
Copyright © 2019 American Chemical Society
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Supporting Info (1)»


Graphitic carbon nitride has emerged as a promising material for high-performance membranes with both filtration and catalytic abilities. However, the scalable construction of carbon-nitride-based membranes is seriously restricted by the poor ability to tailor the structure and poor solvent solubility of bulk nanostructures. Herein, carbon nitride sol was prepared in high yield and used as a precursor to assemble photo-Fenton-like membranes. Intermolecular hydrogen-bond interactions between carbon nitride nanofibers were found to be vitally important for the repolymerization of hydrolyzed molecules into dense and solid membranes. Intercalated Fe-containing polyoxometalates (Fe-POMs) not only acted as molecular linkers to construct carbon nitride membranes but also provided new opportunities for the catalytic functionality. Benefiting from the hydrophobic nanocapillaries in 2D carbon nitride for ultralow water–carbon friction, self-assembled membranes effectively rejected pollutant molecules with high water permeation flux. The integration of carbon nitride photocatalysts with Fenton-like Fe-POMs contributed to the in situ degradation of retained pollutants. Thus, our work manifested a facile bottom-up strategy to construct photo-Fenton-like membranes with antifouling abilities for wastewater treatment.

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The Supporting Information is available free of charge on the ACS Publications website at DOI: 10.1021/acs.est.9b00790.

  • Additional figures showing TEM and SEM images, EDX analysis; FT-IR results, O 1s and XPS spectra, rejection rates and permeation flux, membrane performance, ζ potential, and degradation of MB molecules; tables showing the calculation of proton concentration, filtration of different dyes, and a comparison of typical membranes reported for dye rejection (PDF)

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