Molecular simulations of organic solvent transport in dense polymer membranes: Solution-diffusion or pore-flow mechanism?

He, Jinlong; Fan, Hanqing; Elimelech, Menachem; Li, Ying

doi:10.1016/j.memsci.2024.123055

Journal of Membrane Science

2024

DOI: 10.1016/j.memsci.2024.123055

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Molecular simulations of organic solvent transport in dense polymer membranes: Solution-diffusion or pore-flow mechanism?

Jinlong He,

Hanqing Fan,

Menachem Elimelech

et al.

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Cited by 4 publications

References 73 publications

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Effects of surfactants, ion valency and solution temperature on PFAS rejection in commercial reverse osmosis (RO) and nanofiltration (NF) processes

Ma,

Zhang,

Zhu

et al. 2024

Journal of Water Process Engineering

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Effects of surfactants, ion valency and solution temperature on PFAS rejection in commercial reverse osmosis (RO) and nanofiltration (NF) processes

Ma,

Zhang,

Zhu

et al. 2024

Journal of Water Process Engineering

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Open and FAIR data for nanofiltration in organic media: A unified approach

Van Buggenhout,

Ignacz,

Caspers

et al. 2025

Journal of Membrane Science

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Turing covalent organic framework membranes via heterogeneous nucleation synthesis for organic solvent nanofiltration

Yang,

Guo,

Han

et al. 2024

Sci. Adv.

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Although covalent organic frameworks (COFs) demonstrate notable potential for developing advanced separation membranes, contemporary COF membranes still lack controlled stacking and highly efficient sieving. Here, Turing-architecture COF membranes were constructed by engineering a reaction-diffusion assembly process via heterogeneous nucleation synthesis with tannic acid (TA). TA covalently binds with amine monomers to form a composite precursor with increased reactivity and decreased diffusivity. This altered the pathway of Schiff base reactions with aldehyde monomers, fulfilling suitable reaction-diffusion conditions, and ultimately formed the labyrinthine stripe or spot-patterned Turing COF film with controlled stacking and uniform pore structure. This endows our COF membrane with highly efficient molecule sieving ability for organic solvent nanofiltration while exhibiting a flux that is 621% greater than that of commercial membranes. Thus, this study provides a paradigm for the in situ synthesis of highly efficient COF membranes for diversely sustainable separations.

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Molecular simulations of organic solvent transport in dense polymer membranes: Solution-diffusion or pore-flow mechanism?

Cited by 4 publications

References 73 publications

Effects of surfactants, ion valency and solution temperature on PFAS rejection in commercial reverse osmosis (RO) and nanofiltration (NF) processes

Effects of surfactants, ion valency and solution temperature on PFAS rejection in commercial reverse osmosis (RO) and nanofiltration (NF) processes

Open and FAIR data for nanofiltration in organic media: A unified approach

Turing covalent organic framework membranes via heterogeneous nucleation synthesis for organic solvent nanofiltration

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