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Related Experiment Video

Updated: Dec 27, 2025

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes

Published on: August 16, 2018

Polyethersulfone based MMMs with 2D materials and ionic liquid for CO₂, N₂ and CH₄ separation.

Ashwin R Kamble¹, Chetan M Patel¹, Z V P Murthy¹

¹Department of Chemical Engineering, Sardar Vallabhbhai National Institute of Technology, Surat, 395007, Gujarat, India.

Journal of Environmental Management

|February 25, 2020

Summary

This study developed advanced mixed matrix membranes (MMMs) using two-dimensional (2D) materials and ionic liquids for enhanced carbon dioxide (CO2) separation. These novel membranes significantly improve CO2 capture efficiency, aiding climate change mitigation efforts.

Keywords:

CO(2)/CH(4)CO(2)/N(2)Hexagonal boron nitride Ionic liquid Molybdenum disulfide Polyether sulfone

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Proof-of-Concept for Gas-Entrapping Membranes Derived from Water-Loving SiO2/Si/SiO2 Wafers for Green Desalination

Published on: March 1, 2020

Area of Science:

Materials Science
Chemical Engineering
Environmental Science

Background:

Global warming necessitates efficient carbon dioxide (CO2) capture technologies.
Membrane-based separation is a promising approach for reducing atmospheric CO2 emissions.
Developing advanced membrane materials is crucial for improving CO2 separation efficiency.

Purpose of the Study:

To investigate the impact of two-dimensional (2D) materials on the gas separation properties of polyether sulfone (PES) mixed matrix membranes (MMMs).
To evaluate the performance of MMMs incorporating ionic liquid (IL) and 2D materials (molybdenum disulfide (MoS2) and hexagonal boron nitride (h-BN)) for CO2 separation.
To assess the CO2/N2 and CO2/CH4 separation capabilities of the developed MMMs.

Main Methods:

Preparation of polyether sulfone (PES) based mixed matrix membranes (MMMs) by incorporating ionic liquid (IL) and 2D materials (MoS2, h-BN).
Characterization of membrane properties using Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), and water contact angle tests.
Investigation of pure gas (N2, CO2, CH4) permeation and binary gas mixture (CO2/N2, CO2/CH4) separation using prepared membranes.

Main Results:

Gas permeabilities of the MMMs were significantly enhanced, showing 15-20 times higher values compared to pure PES.
The selectivity for CO2/N2 separation improved by up to 124% with PES/h-BN (1 wt%)/IL.
The selectivity for CO2/CH4 separation improved by up to 18% with PES/MoS2 (1.5 wt%)/IL.

Conclusions:

The incorporation of 2D materials and IL as fillers into the PES matrix substantially improves gas separation and permeation properties.
These novel MMMs demonstrate significant potential for efficient CO2/CH4 and CO2/N2 separation.
The developed membranes offer a promising solution for CO2 capture and emission reduction.