Recent development of membranes for carbon capture: From materials to asymmetric membranes

Jia, Yuewen; Wong, Kelvin; Liang, Can Zeng; Wu, Ji; Chung, Tai-Shung; Zhang, Sui

doi:10.1016/j.pmatsci.2024.101324

Progress in Materials Science

2024

DOI: 10.1016/j.pmatsci.2024.101324

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Recent development of membranes for carbon capture: From materials to asymmetric membranes

Yuewen Jia,

Kelvin Wong,

Can Zeng Liang

et al.

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Cited by 6 publications

References 934 publications

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Control of Microporous Structure in Conjugated Microporous Polymer Membranes for Post‐Combustion Carbon Capture

Jia,

Lu,

Yang

et al. 2024

Adv Funct Materials

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Membranes offer a potentially energy‐efficient and space‐saving solution to reduce CO2 emissions and combat global warming. However, engineering membranes with advanced materials for high permeance and reasonable selectivity is a pressing need. In this context, a series of carbazole‐based conjugated microporous polymer (CMP) membranes are fabricated with thicknesses of a few hundred nanometers through in situ electropolymerization for post‐combustion carbon capture. The findings reveal that various experimental conditions, including the monomer concentration, electric potential, and cyclic voltammetry (CV) cycling number, largely impact the polymerization degree of the carbazole‐based CMP, thus influencing the mode of polymer chain packing. An optimal polymerization degree leads to a larger micropore size and a higher fractional free volume (FFV), thus allowing fast CO2 transport. The study first demonstrates the feasibility of using CMPs to fabricate thin film composite (TFC) membranes for post‐combustion carbon capture and confirms the high controllability of their micropores. These insights provide instructive guidance for the future advancement of CMP applications in membrane fabrication for gas separation and other fields that require precise micropore generation and design.

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Control of Microporous Structure in Conjugated Microporous Polymer Membranes for Post‐Combustion Carbon Capture

Jia,

Lu,

Yang

et al. 2024

Adv Funct Materials

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Polymer‐MOF Network Enabling Ultrathin Coating for Post‐Combustion Carbon Capture

Fan,

Liang,

Feng

et al. 2024

Angewandte Chemie

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Permeance‐selectivity trade‐off and high temperature resilience are key challenges in development of membranes for post‐combustion carbon capture. While mixed matrix membranes (MMMs) consisting of polymers and metal organic frameworks (MOFs) offer the potential to address the challenges, they are limited by the low loading of MOFs in the thin film layer. Herein, we propose an inverse synthesis strategy to form polymer‐MOF networks by copolymerizing monomers with functionalized UiO‐66 nanoparticles. This process yields a finely dispersed, easily processable solution, enabling defect‐free, thin polymer‐MOF coatings with up to 40 wt% MOF loading within the polyethylene oxide‐based polymers on polyacrylonitrile supports. The membrane with 40 wt% MOF demonstrated a 212% increment in CO2 permeance at 25 °C and maintained a selectivity of 20 at 60 °C, which is attributed to the stable diffusivity selectivity of MOFs at high temperature. Furthermore, the membrane was evaluated with mixed gas and 83% relative humidity (RH) at 60°C, achieving a CO2 permeance up to 2793 GPU and a CO2/N2 selectivity of 21.6. This work offers insights into the design of practical mixed matrix membranes, which not only paves the way towards energy efficient carbon capture from flue gas, but also provides more possibilities for other applications.

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Polymer‐MOF Network Enabling Ultrathin Coating for Post‐Combustion Carbon Capture

Fan,

Liang,

Feng

et al. 2024

Angew Chem Int Ed

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Recent development of membranes for carbon capture: From materials to asymmetric membranes

Cited by 6 publications

References 934 publications

Control of Microporous Structure in Conjugated Microporous Polymer Membranes for Post‐Combustion Carbon Capture

Control of Microporous Structure in Conjugated Microporous Polymer Membranes for Post‐Combustion Carbon Capture

Polymer‐MOF Network Enabling Ultrathin Coating for Post‐Combustion Carbon Capture

Polymer‐MOF Network Enabling Ultrathin Coating for Post‐Combustion Carbon Capture

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