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Related Concept Videos

¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)01:20

¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)

When proton-coupled carbon-13 spectra are simplified by a broadband proton decoupling technique, structural information about the coupled protons is lost. Distortionless enhancement by polarization transfer (DEPT) is a technique that provides information on the number of hydrogens attached to each carbon in a molecule. While the DEPT experiment utilizes complex pulse sequences, the pulse delay and flip angle are specifically manipulated. The resulting signals have different phases depending on...

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Synthesis of Hydrogels with Antifouling Properties As Membranes for Water Purification
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Polysulfone/Graphene Oxide Mixed Matrix Membranes for Improved CO2/CH4 Separation.

Mustafa Alsaady1, Sharjeel Waqas2, Mohammed A Almarshoud3

  • 1Chemical Engineering Department, University of Jeddah, Jeddah 23890, Saudi Arabia.

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|December 24, 2025
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Summary

Graphene oxide incorporated into polysulfone membranes significantly boosts CO2/CH4 separation. The optimized membrane shows high CO2 permeability and selectivity, with enhanced resistance to CO2 plasticization for industrial applications.

Keywords:
CO2 plasticizationCO2/CH4 separationGO fillerPolysulfonemixed matrix membranes

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Area of Science:

  • Materials Science
  • Chemical Engineering
  • Polymer Science

Background:

  • Mixed matrix membranes (MMMs) are crucial for gas separation.
  • Polysulfone (PSF) is a common polymer matrix, but its performance can be limited.
  • Graphene oxide (GO) offers unique properties for membrane enhancement.

Purpose of the Study:

  • To develop and optimize PSF/GO MMMs for improved CO2/CH4 separation.
  • To investigate the effect of GO incorporation on membrane morphology and performance.
  • To evaluate the CO2 plasticization resistance of the developed MMMs.

Main Methods:

  • Systematic characterization of MMM morphology.
  • Gas permeation experiments to evaluate CO2/CH4 separation performance.
  • Assessment of CO2 plasticization resistance at varying pressures.

Main Results:

  • GO incorporation enhanced gas permeation and CO2/CH4 selectivity in PSF membranes.
  • The PSF/GO-0.3 wt.% membrane achieved high CO2 permeability (21.63 Barrer) and selectivity (14.32).
  • PSF/GO-0.3 wt.% membrane showed superior CO2 plasticization resistance, maintaining performance up to 10 bar.

Conclusions:

  • PSF/GO MMMs demonstrate superior gas separation performance compared to pristine PSF.
  • The optimized PSF/GO-0.3 wt.% membrane is a promising candidate for carbon capture and natural gas purification.
  • GO's reinforcing effect improves membrane stability and resistance to CO2 plasticization.