A comprehensive understanding of co-solvent effects on interfacial polymerization: Interaction with trimesoyl chloride

Lee, Jaewoo; Wang, Rong; Bae, Tae‐Hyun

doi:10.1016/j.memsci.2019.04.038

Cited by 59 publications

(44 citation statements)

References 42 publications

(64 reference statements)

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“…According to Young’ s equation, the spreading behavior of the hexane solution is related to interfacial tension as well as interfacial polymerization reaction process. As reported in the literature, 36 to better understand the mechanism of interfacial polymerization, several studies have put forth the idea that a co-solvent is likely to promote diamine diffusion because it can reduce the solubility difference or interfacial tension between two immiscible solutions. However, detailed mechanism studies are still lacking.…”

Section: Results and Discussionmentioning

confidence: 99%

Controllable Interfacial Polymerization for Nanofiltration Membrane Performance Improvement by the Polyphenol Interlayer

Yang

2019

ACS Omega

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It is a huge challenge to have a controllable interfacial polymerization in the fabrication process of nanofiltration (NF) membranes. In this work, a polyphenol interlayer consisting of polyethyleneimine (PEI)/tannic acid (TA) was simply assembled on the polysulfone (PSf) substrate to fine-tune the interfacial polymerization process, without additional changes to the typical NF membrane fabrication procedures. In addition, three decisive factors in the interfacial polymerization process were examined, including the diffusion kinetics of fluorescence-labeled piperazine (FITC-PIP), the spreading behavior of the hexane solution containing acyl chloride, and the polyamide layer formation on the porous substrate by in situ Fourier transform infrared (FT-IR) spectroscopy. The experimental results demonstrate that the diffusion kinetics of FITC-PIP is greatly reduced, and the spreading behavior of the hexane solution is also impeded to some extent. Furthermore, in situ FT-IR spectroscopy demonstrates that by the mitigation of this PEI/TA interlayer, the interfacial polymerization process is greatly controlled. Moreover, the as-prepared NF membrane exhibits an increased water permeation flux of 65 L m –2 h –1 (at the operation pressure of 0.6 MPa), high Na 2 SO 4 rejection of >99%, and excellent long-term structural stability.

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Section: Results and Discussionmentioning

confidence: 99%

Controllable Interfacial Polymerization for Nanofiltration Membrane Performance Improvement by the Polyphenol Interlayer

Yang

2019

ACS Omega

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“…Accordingly, we tried to determine which is better between CB [6] and CB [7] as a building block for desalination membranes. CB [5] and CB [8] were excluded…”

Section: Qm Calculations To Weigh Up the Best Candidate Among Cucurbi...mentioning

confidence: 99%

Mechanisms of Efficient Desalination by a Two-Dimensional Porous Nanosheet Prepared via Bottom-Up Assembly of Cucurbit[6]urils

et al. 2022

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Many researchers have examined the desalination performance of various kinds of two-dimensional (2D) porous nanosheets prepared by top-down approaches such as forming pores on the plain based on molecular dynamics (MD) simulations. In contrast, it is rare to find MD simulations addressing the desalination performance of a 2D porous nanosheet prepared by bottom-up approaches. We investigated the desalination performance of a 2D porous nanosheet prepared by the assembly of cucurbit[6]uril (CB[6]) via MD simulation. The model 2D CB[6] nanosheet features CB[6] with the carbonyl-fringed portals of 3.9 Å and the interstitial space filled with hydrophobic linkers and dangling side chains. Our MD simulation demonstrated that the 2D porous CB[6] nanosheet possesses a 70 to 140 times higher water permeance than commercial reverse osmosis membranes while effectively preventing salt passage. The extremely high water permeance and perfect salt rejection stem from not only CB[6]’s nature (hydrophilicity, negative charge, and the right dimension for size exclusion) but also the hydrophobic and tightly filled interstitial space. We also double-checked that the extremely high water permeance was attributable to only CB[6]’s nature, not water leakage, by contrasting it with a 2D nanosheet comprising CB[6]-spermine complexes. Lastly, this paper provides a discussion on a better cucurbituril homologue to prepare a next-generation desalination membrane possessing great potential to such an extent to surpass the 2D porous CB[6] nanosheet based on quantum mechanics calculations.

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“…For example, reverse osmosis (RO) membranes are known to attain high rejections (~95%) of heavy metals [ 39 ]. This is attributed to the dense, highly cross-linked nature of the selective layer with small pore sizes of ~0.25–0.8 nm [ 26 , 40 ], thereby severely restricting the passage of dissolved heavy metals. However, the energy consumption of RO is high, and thus it is not favorable to use dense RO membranes for heavy metal removal.…”

Section: Recent Progress In Pollutant Removal Using Mixed Matrix Membranesmentioning

confidence: 99%

Emerging Materials to Prepare Mixed Matrix Membranes for Pollutant Removal in Water

et al. 2021

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Various pollutants of different sizes are directly (e.g., water-borne diseases) and indirectly (e.g., accumulation via trophic transfer) threatening our water health and safety. To cope with this matter, multifaceted approaches are required for advanced wastewater treatment more efficiently. Wastewater treatment using mixed matrix membranes (MMMs) could provide an excellent alternative since it could play two roles in pollutant removal by covering adsorption and size exclusion of water contaminants simultaneously. This paper provides an overview of the research progresses and trends on the emerging materials used to prepare MMMs for pollutant removal from water in the recent five years. The transition of the research trend was investigated, and the most preferred materials to prepare MMMs were weighed up based on the research trend. Various application examples where each emerging material was used have been introduced along with specific mechanisms underlying how the better performance was realized. Lastly, the perspective section addresses how to further improve the removal efficiency of pollutants in an aqueous phase, where we could find a niche to spot new materials to develop environmentally friendly MMMs, and where we could further apply MMMs.

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A comprehensive understanding of co-solvent effects on interfacial polymerization: Interaction with trimesoyl chloride

Cited by 59 publications

References 42 publications

Controllable Interfacial Polymerization for Nanofiltration Membrane Performance Improvement by the Polyphenol Interlayer

Controllable Interfacial Polymerization for Nanofiltration Membrane Performance Improvement by the Polyphenol Interlayer

Mechanisms of Efficient Desalination by a Two-Dimensional Porous Nanosheet Prepared via Bottom-Up Assembly of Cucurbit[6]urils

Emerging Materials to Prepare Mixed Matrix Membranes for Pollutant Removal in Water

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