Chemical topology molecular engineering of CO2-philic membranes toward highly efficient carbon capture

Zhu, Bin; Yang, Yan; Wang, Kaifang; He, Xuezhong; Yin, Hang; Shao, Lu

doi:10.1016/j.memsci.2023.121917

“…These results clearly showed that the presence of the MOF/COF in the Pebax matrix restricted the mobility of polymer chains to make them more rigid. 65 This phenomenon was more obvious in Pebax/MOF/COF-16 and Pebax/MOF/COF-24 MMMs than that of Pebax/MOF/COF-8 MMMs, possibly attributed to the abundantly exposed Lewis basic sites of amorphous materials. 66…”

Section: Resultsmentioning

confidence: 95%

A steric hindrance-driven amorphization strategy on MOF/COF for boosting CO₂ separation in mixed matrix membranes

Liang,

Zhang,

Li

et al. 2024

J. Mater. Chem. A

3

0

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“…The chemical structure of the gel membrane was characterized by Fourier transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS). As shown in Figure S2, both POSS and PEGMEA exhibit characteristic peaks of unsaturated double bonds at 1406 cm À 1 and 811 cm À 1 , [8] which disappear after UV curing, implying successful free radical polymerization. Combined with the XPS pattern (Figure 1b), a carbon chain peak appears at 283 eV, which proves that a cross-linked network is generated in both cross-linked membrane and gel membrane.…”

Section: Structural Characterizationsmentioning

confidence: 97%

Ultrapermeable Gel Membranes Enabling Superior Carbon Capture

Zhu,

Yang,

Guo

et al. 2023

Angew Chem Int Ed

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Membrane technology is rapidly gaining broad attraction as a viable alternative for carbon capture to mitigate increasingly severe global warming. Emerging CO2‐philic membranes have become crucial players in efficiently separating CO2 from light gases, leveraging their exceptional solubility‐selectivity characteristics. However, economic and widespread deployment is greatly dependent on the boosted performance of advanced membrane materials for carbon capture. Here, we design a unique gel membrane composed of CO2‐philic molecules for accelerating CO2 transportation over other gases for ultrapermeable carbon capture. The molecular design of such soft membranes amalgamates the advantageous traits of augmented permeation akin to liquid membranes and operational stability akin to solid membranes, effectively altering the membrane's free volume characteristics validated by both experiments and molecular dynamics simulation. Surprisingly, gas diffusion through the free‐volume‐tuned gel membrane undergoes a 9‐fold improvement without compromising the separation factor for the superior solubility selectivity of CO2‐philic materials, and CO2 permeability achieves a groundbreaking record of 5608 Barrer surpassing the capabilities of nonfacilitated CO2 separation materials and exceeding the upper bound line established in 2019 even by leading‐edge porous polymer materials. Our designed gel membrane can maintain exceptional separation performance during prolonged operation, enabling the unparalleled potential of solubility‐selective next‐generation materials towards sustainable carbon capture.

show abstract

Ultrapermeable Gel Membranes Enabling Superior Carbon Capture

Zhu,

Yang,

Guo

et al. 2023

Angewandte Chemie

Self Cite

0

View full text Add to dashboard Cite

Membrane technology is rapidly gaining broad attraction as a viable alternative for carbon capture to mitigate increasingly severe global warming. Emerging CO2‐philic membranes have become crucial players in efficiently separating CO2 from light gases, leveraging their exceptional solubility‐selectivity characteristics. However, economic and widespread deployment is greatly dependent on the boosted performance of advanced membrane materials for carbon capture. Here, we design a unique gel membrane composed of CO2‐philic molecules for accelerating CO2 transportation over other gases for ultrapermeable carbon capture. The molecular design of such soft membranes amalgamates the advantageous traits of augmented permeation akin to liquid membranes and operational stability akin to solid membranes, effectively altering the membrane's free volume characteristics validated by both experiments and molecular dynamics simulation. Surprisingly, gas diffusion through the free‐volume‐tuned gel membrane undergoes a 9‐fold improvement without compromising the separation factor for the superior solubility selectivity of CO2‐philic materials, and CO2 permeability achieves a groundbreaking record of 5608 Barrer surpassing the capabilities of nonfacilitated CO2 separation materials and exceeding the upper bound line established in 2019 even by leading‐edge porous polymer materials. Our designed gel membrane can maintain exceptional separation performance during prolonged operation, enabling the unparalleled potential of solubility‐selective next‐generation materials towards sustainable carbon capture.

show abstract

Chemical topology molecular engineering of CO2-philic membranes toward highly efficient carbon capture

Cited by 10 publications

References 45 publications

A steric hindrance-driven amorphization strategy on MOF/COF for boosting CO₂ separation in mixed matrix membranes

A steric hindrance-driven amorphization strategy on MOF/COF for boosting CO₂ separation in mixed matrix membranes

Ultrapermeable Gel Membranes Enabling Superior Carbon Capture

Ultrapermeable Gel Membranes Enabling Superior Carbon Capture

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Chemical topology molecular engineering of CO2-philic membranes toward highly efficient carbon capture

Cited by 10 publications

References 45 publications

A steric hindrance-driven amorphization strategy on MOF/COF for boosting CO2 separation in mixed matrix membranes

A steric hindrance-driven amorphization strategy on MOF/COF for boosting CO2 separation in mixed matrix membranes

Ultrapermeable Gel Membranes Enabling Superior Carbon Capture

Ultrapermeable Gel Membranes Enabling Superior Carbon Capture

Contact Info

Product

Resources

About

A steric hindrance-driven amorphization strategy on MOF/COF for boosting CO₂ separation in mixed matrix membranes

A steric hindrance-driven amorphization strategy on MOF/COF for boosting CO₂ separation in mixed matrix membranes