The coming of age of water channels for separation membranes: from biological to biomimetic to synthetic

Chemical Society Reviews, Journal Year: 2022, Volume and Issue: 51(11), P. 4537 - 4582

Published: Jan. 1, 2022

Water channels are one of the key pillars driving development next-generation desalination and water treatment membranes. Over past two decades, rise nanotechnology has brought together an abundance multifunctional nanochannels that poised to reinvent separation membranes with performances exceeding those state-of-the-art polymeric within water-energy nexus. Today, these can be broadly categorized into biological, biomimetic synthetic, owing their different natures, physicochemical properties methods for membrane nanoarchitectonics. Furthermore, against backdrop mechanisms, types nanochannel exhibit unique merits limitations, which determine usability suitability designs. Herein, this review outlines progress a comprehensive amount nanochannels, include aquaporins, pillar[5]arenes, I-quartets, nanotubes porins, graphene-based materials, metal- covalent-organic frameworks, porous organic cages, MoS2, MXenes, offering comparative glimpse where potential lies. First, we map out background by looking evolution over years, before discussing latest developments focusing on intrinsic transport from chemistry standpoint. Next, put perspective fabrication nanoarchitecture high-performance nanochannel-enabled membranes, especially distinct differences each type how they leveraged unlock as-promised high in current mainstream Lastly, critically evaluate recent findings provide holistic qualitative assessment respect attributes most strongly valued engineering, upcoming challenges share our perspectives researchers pathing future directions coming age channels.

Language: Английский

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Charged Nanochannels in Covalent Organic Framework Membranes Enabling Efficient Ion Exclusion

ACS Nano, Journal Year: 2022, Volume and Issue: 16(8), P. 11781 - 11791

Published: June 30, 2022

Controllable ion transport through nanochannels is crucial for biological and artificial membrane systems. Covalent organic frameworks (COFs) with regular tunable are emerging as an ideal material platform to develop synthetic membranes transport. However, exclusion by COF remains challenging because most materials have large-sized leading nonselective of small ions. Here we ionic (iCOFMs) control charged framework nanochannels, the interior surfaces which covered arrayed sulfonate groups render superior charge density. The overlap electrical double layer in blocks entry co-ions, narrows their passageways, concomitantly restrains permeation counterions via balance. These highly within iCOFM enable while maintaining intrinsically high water permeability. Our results reveal possibilities controllable based on purification, separation, sensing, energy conversion.

Language: Английский

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Bioinspired Ti₃C₂T_xMXene‐Based Ionic Diode Membrane for High‐Efficient Osmotic Energy Conversion

Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 61(41)

Published: June 30, 2022

Abstract Bioinspired asymmetric nanofluidic ion channels with ionic diode behavior that can boost the osmotic energy (so‐called blue energy) conversion are highly desirable, especially if they be easily constructed and modified. Two‐dimensional (2D) metal carbides nitrides, known as MXenes, combine hydrophilic surfaces tunable surface charge properties, providing a shortcut to prepare channels. Here, we report mechanically robust, flexible, scale‐up‐friendly Ti 3 C 2 T x MXene‐based membrane rectified current demonstrate its potential use in reverse electrodialysis conversion. Under salinity gradient of synthetic seawater river water, our membrane‐based generator‘s power density is 8.6 W m −2 up 17.8 at 500‐fold gradient, outperforming state‐of‐the‐art membranes. The design diode‐type provides facile general strategy developing large‐scale 2D nanofluidics selective transport.

Language: Английский

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Uranium and lithium extraction from seawater: challenges and opportunities for a sustainable energy future

Journal of Materials Chemistry A, Journal Year: 2023, Volume and Issue: 11(42), P. 22551 - 22589

Published: Jan. 1, 2023

Our analysis of the current literature shows that advances in extractive technologies for U/Li recovery lie at intersection between molecular simulation, nanotechnology and materials science, electrochemistry, membrane engineering.

Language: Английский

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Regulating ion affinity and dehydration of metal-organic framework sub-nanochannels for high-precision ion separation

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: March 8, 2024

Abstract Membrane consisting of ordered sub-nanochannels has been pursued in ion separation technology to achieve applications including desalination, environment management, and energy conversion. However, high-precision not yet achieved owing the lack deep understanding transport mechanism confined environments. Biological channels can conduct ions with ultrahigh permeability selectivity, which is inseparable from important role channel size “ion-channel” interaction. Here, inspired by biological systems, we report monovalent divalent cations functionalized metal-organic framework (MOF) membranes (UiO-66-(X) 2 , X = NH SH, OH OCH 3 ). We find that functional group (X) MOF sub-nanochannel synergistically regulate binding affinity dehydration process, key enlarging activation difference between target interference improve performance. The K + /Mg 2+ selectivity UiO-66-(OCH ) membrane reaches as high 1567.8. This work provides a gateway development membranes.

Language: Английский

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Unlocking osmotic energy harvesting potential in challenging real-world hypersaline environments through vermiculite-based hetero-nanochannels

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Jan. 19, 2024

Abstract Nanochannel membranes have demonstrated remarkable potential for osmotic energy harvesting; however, their efficiency in practical high-salinity systems is hindered by reduced ion selectivity. Here, we propose a dual-separation transport strategy constructing two-dimensional (2D) vermiculite (VMT)-based heterogeneous nanofluidic system via an eco-friendly and scalable method. The cations are initially separated enriched micropores of substrates during the transmembrane diffusion, followed secondary precise sieving ultra-thin VMT laminates with high flux. Resultantly, our demonstrates efficient harvesting performance, especially hypersaline environment. Notably, achieve maximum power density 33.76 W m −2 , 6.2-fold improvement ten-fold increase salinity gradient, surpassing state-of-the-art nanochannel under challenging conditions. Additionally, confirm generation using various natural salt-lake brines, achieving 25.9 . This work triggers hopes blue conversion advanced nanoarchitecture.

Language: Английский

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Perfect confinement of crown ethers in MOF membrane for complete dehydration and fast transport of monovalent ions

Science Advances, Journal Year: 2024, Volume and Issue: 10(19)

Published: May 8, 2024

Fast transport of monovalent ions is imperative in selective ion separation based on membranes. Here, we report the situ growth crown ether@UiO-66 membranes at a mild condition, where dibenzo-18-crown-6 (DB18C6) or dibenzo-15-crown-5 perfectly confined UiO-66 cavity. Crown exhibit enhanced rates and mono-/divalent selectivity, due to combination size sieving interaction screening effects toward complete dehydration. Specifically, DB18C6@UiO-66 membrane shows permeation rate (e.g., K

Language: Английский

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Bioinspired 2D nanofluidic membranes for energy applications

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(5), P. 2300 - 2325

Published: Jan. 1, 2024

Bioinspired 2D nanofluidic membranes enable efficient and selective ion transport. Further research in this area is essential to facilitate the development of high-performance energy conversion storage devices for a sustainable future.

Language: Английский

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Ion transport in nanofluidics under external fields

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(6), P. 2972 - 3001

Published: Jan. 1, 2024

This review summarizes the recent progress in ion transport nanofluidics regulated by external physical/chemical fields and applications sensing, pumps, energy conversion, others.

Language: Английский

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Ion–Ion Selectivity of Synthetic Membranes with Confined Nanostructures

ACS Nano, Journal Year: 2024, Volume and Issue: 18(33), P. 21633 - 21650

Published: Aug. 8, 2024

Synthetic membranes featuring confined nanostructures have emerged as a prominent category of leading materials that can selectively separate target ions from complex water matrices. Further advancements in these will pressingly rely on the ability to elucidate inherent connection between transmembrane ion permeation behaviors and ion-selective nanostructures. In this review, we first abstract state-of-the-art with diversity spatial confinements current synthetic membranes. Next, underlying mechanisms govern under nanoconfinement are analyzed. We then proceed assess membrane focus their structural merits allow ultrahigh selectivity for wide range monovalent divalent ions. also highlight recent experimental methodologies measuring ionic permeability, hydration numbers, energy barriers transport. conclude by putting forth future research prospects challenges realm high-performance

Language: Английский

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