Three-dimensional covalent organic frameworks for advanced membrane separations

Sheng, Kai; Zhu, Junyong; Ge, Lei; Du, Jiale; Luo, Tingting; Jiang, Lei; Jing, Wenheng; Sun, Shi-Peng; Zhang, Yatao; Van der Bruggen, Bart

doi:10.1016/j.advmem.2024.100109

Advanced Membranes

2024

DOI: 10.1016/j.advmem.2024.100109

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Three-dimensional covalent organic frameworks for advanced membrane separations

Kai Sheng,

Junyong Zhu,

Lei Ge

et al.

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Covalently Grafting of Ethylenediamine onto a 2D Sub‐stoichiometric COF for Enhanced CO₂/N₂ Separation^†

Sun,

Luo,

Peng

2024

Chin. J. Chem.

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Comprehensive SummaryThe post‐synthetic modification of two‐dimensional sub‐stoichiometric covalent organic frameworks (COFs) for gas separation, particularly for the efficient removal of CO2 from CO2/N2 mixtures, is an area of growing interest yet remains relatively unexplored. In this study, we report the precise tuning of functional groups in sub‐stoichiometric COFs to enhance CO2 capture performance. A sub‐stoichiometric COF with free aldehyde groups (HPCOF) was designed and synthesized, followed by covalent modification via ethylenediamine (EDA) grafting, yielding HPCOF‐EDA. This post‐modification strategy significantly increased CO2 adsorption capacity (55.7 cm3·g–1 at 298 K and 1 bar) and CO2/N2 selectivity (58), primarily attributed to the formation of additional N—H···O interactions. These findings demonstrate the potential of functional engineering to broaden the application prospects of sub‐stoichiometric COFs in gas adsorption and separation technologies.

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Covalently Grafting of Ethylenediamine onto a 2D Sub‐stoichiometric COF for Enhanced CO₂/N₂ Separation^†

Sun,

Luo,

Peng

2024

Chin. J. Chem.

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Three-dimensional covalent organic frameworks for advanced membrane separations

Cited by 1 publication

References 46 publications

Covalently Grafting of Ethylenediamine onto a 2D Sub‐stoichiometric COF for Enhanced CO₂/N₂ Separation^†

Covalently Grafting of Ethylenediamine onto a 2D Sub‐stoichiometric COF for Enhanced CO₂/N₂ Separation^†

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Three-dimensional covalent organic frameworks for advanced membrane separations

Cited by 1 publication

References 46 publications

Covalently Grafting of Ethylenediamine onto a 2D Sub‐stoichiometric COF for Enhanced CO2/N2 Separation†

Covalently Grafting of Ethylenediamine onto a 2D Sub‐stoichiometric COF for Enhanced CO2/N2 Separation†

Contact Info

Product

Resources

About

Covalently Grafting of Ethylenediamine onto a 2D Sub‐stoichiometric COF for Enhanced CO₂/N₂ Separation^†

Covalently Grafting of Ethylenediamine onto a 2D Sub‐stoichiometric COF for Enhanced CO₂/N₂ Separation^†