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Related Experiment Video

Updated: Sep 13, 2025

Microfluidic-based Synthesis of Covalent Organic Frameworks COFs: A Tool for Continuous Production of COF Fibers and Direct Printing on a Surface
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Alkoxy functionalized covalent organic frameworks for efficient oil/water separation.

Shaofeng Dong1, Songtao Li1, Ziyi Yang1

  • 1Ministry of Education Key Laboratory of Analytical Science for Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, China.

Journal of Colloid and Interface Science
|July 27, 2025
PubMed
Summary
This summary is machine-generated.

A novel superhydrophobic covalent organic framework (SCOF) was synthesized for efficient oil/water separation. The SCOF-based membrane achieved over 99% separation efficiency for oily wastewater and high oil flux, aiding environmental remediation.

Keywords:
Covalent organic frameworksHigh fluxOil/water separationRoom temperature synthesisSuperhydrophobic membrane

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Area of Science:

  • Materials Science
  • Environmental Science
  • Chemistry

Background:

  • Oily wastewater discharge and oil spills pose significant environmental threats.
  • Efficient oil/water separation technologies are crucial for environmental remediation.

Purpose of the Study:

  • To design and synthesize a novel superhydrophobic covalent organic framework (COF) for oil/water separation.
  • To evaluate the performance of the synthesized COF in separating oil/water mixtures and adsorbing oils.

Main Methods:

  • Synthesis of a superhydrophobic COF (SCOF) with functional alkoxy side chains at room temperature.
  • Fabrication of superhydrophobic membranes by loading SCOF onto fabric.
  • Fabrication of oil adsorbents by loading SCOF onto porous melamine sponge.

Main Results:

  • The Fabric@SCOF membrane achieved >99% separation efficiency for various oil/water mixtures.
  • The membrane demonstrated a high oil flux of 63,129 L m⁻² h⁻¹ for CH₂Cl₂/water separation.
  • The Sponge@SCOF adsorbent exhibited a CCl₄ adsorption capacity of 151 g/g.

Conclusions:

  • The novel SCOF material is effective for high-efficiency oil/water separation and oil adsorption.
  • This work advances the application of COF-based superhydrophobic composites in environmental remediation.
  • The findings provide insights into designing functional COFs for oily wastewater treatment.