Super-assembly of freestanding graphene oxide-aramid fiber membrane with T-mode subnanochannels for sensitive ion transport

Zhou, Shan; Xie, Lei; Yan, Miao; Zeng, Hui; Zhang, Xin; Zeng, Jie; Liang, Qirui; Liu, Tianyi; Chen, Pu; Jiang, Lei; Kong, Biao

doi:10.1039/d1an02232f

Cited by 10 publications

(13 citation statements)

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“…Along the same idea, ionic conductance is also measured in 0.01 m NaCl electrolyte at different temperatures from 298 to 333 K, to investigate ion transport behavior in the graphene oxide/aramid nanofiber (GO/ANF/GO) composite membrane. [69] A similar Arrhenius behavior is observed, and the energy barrier E a for ion transport becomes 0.159 eV, which is even lower than that of other 2D layered membranes. [70] This excellent ion transport performance is attributed to the higher surface charge density of nanochannels, due to the presence of more oxygen-containing functional groups after the introduction of ANF.…”

Section: Surface Conductancesupporting

confidence: 60%

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Nanochannel‐Based Ion Transport and Its Application in Osmotic Energy Conversion: A Critical Review

Wang

Zhang

Zhu

et al. 2023

Advanced Physics Research

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Nanochannel‐based ion transport is an important field of study in various disciplines, including physics, chemistry, energy, materials science, biology, and earth science. The unique features of natural nanochannels have inspired numerous innovative designs that seek to achieve high ion permeability, selectivity, and rectification. A notable example is osmotic energy conversion, which harvests sustainable salinity‐gradient energy to generate electricity without moving parts, noise, or carbon emissions and thus serves as a promising alternative to traditional fossil fuel utilization. This review focuses on the fundamental principles, regulatory methods, and practical applications of nanochannel‐based ion transport for osmotic energy conversion. The physical mechanisms of ion transport and the intriguing phenomena of ion behaviors in nanoconfined spaces are discussed first, followed by a thorough examination of the overall process of osmotic power generation from mathematical, numerical, parametric, first‐principles, molecular simulation, and modeling perspectives. Strategies for enhancing the osmotic performance are then discussed to overcome the trade‐off between ion selectivity and ion flux, including the theoretical design of nanochannel geometry and electrification, experimental optimization of nanoporous membranes, and electrolyte thermal enhancement. The existing challenges and opportunities for the future development of nanochannel‐based ion transport and osmotic power generation are addressed at the end.

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Section: Surface Conductancesupporting

confidence: 60%

Section: Ion Behavior In Nanoconfined Spacementioning

confidence: 99%

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Nanochannel‐Based Ion Transport and Its Application in Osmotic Energy Conversion: A Critical Review

Wang

Zhang

Zhu

et al. 2023

Advanced Physics Research

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“…[44,81] Similarly, more extended work with different aramid fibers also have been applied to regulate ion transport behavior of 2D-GDIC. [44] In general, it has been discussed above that insertion of diverse nanofibers into 2D-GDIC can offer supererogatory space charge for high-efficiency ion/fluid transport and strengthen structural stability, while the entanglement and aggregation of long and flexible polymer chain inevitably cause obvious spatial hinder-ance in 2D-GDIC. Therefore, Zhao et al designed a unique 2D-GDIC using oppositely charged cellulose nanocrystal (CNC) as particular intercalator (Figure 3E), [82] where CNC with a rigid and rodlike structure obviously reduced entanglement and aggregation, thereby minimizing steric hindrance of ion/fluid transport and strengthening structural stability of 2D-GDIC.…”

Section: Graphene Hybrid Materialsmentioning

confidence: 99%

Interfacial Assembly of 2D Graphene‐Derived Ion Channels for Water‐Based Green Energy Conversion

Fan,

Zhou,

Xie

et al. 2023

Advanced Materials

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The utilization of sustained and green energy is believed to alleviate increasing menace of global environmental concerns and energy dilemma. Interfacial assembly of two‐dimensional graphene‐derived ion channels (2D‐GDIC) with tunable ion/fluid transport behavior enables efficient harvesting of renewable green energy from ubiquitous water, especially for osmotic energy harvesting. In this Review, we summarize various interfacial assembly strategies for fabricating diverse 2D‐GDICs and discuss their ion transport properties. We analyze how particular structure and charge density/distribution of 2D‐GDIC can be modulated to minimize internal resistance of ion/fluid transport and enhance energy conversion efficiency, and we highlight stimuli‐responsive functions and stability of 2D‐GDIC and further examine the possibility of integrating 2D‐GDIC with other energy conversion systems. Notably, the presented preparation and applications of 2D‐GDIC also inspire and guide other 2D materials to fabricate sophisticated ion channels for targeted applications. Finally, we analyze potential challenges in this field and offer a prospect to future developments toward high‐performance or large‐scale real‐word applications.This article is protected by copyright. All rights reserved

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“…[ 3 ] Polymer‐based nanopore or nanochannel devices, such as polyethylene terephthalate (PET) and polyimide membranes, have been widely used in energy generator, [ 4 ] sensors, [ 5 ] ion gating, [ 6 ] and ion pump [ 7 ] due to their mature membrane building technology. In addition, 2D materials, such as graphene oxide, [ 8 ] MXene, [ 9 ] Kaolinite, [ 10 ] Vermiculite, [ 11 ] have also been used to fabricate layered nanofluidic systems. Nevertheless, most of these membranes suffer from insufficient ion transport flux and high membrane inner resistance due to their low pore density and disordered channels, which results in an unfavorable performance.…”

Section: Introductionmentioning

confidence: 99%

Super‐Assembled Multi‐Level Asymmetric Mesochannels for Coupled Accelerated Dual‐Ion Selective Transport

et al. 2022

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by the biological ion channels, various biomimetic nanofluidic devices have been constructed, featuring the characteristics of ion selectivity, ion gating, and ion rectification. [3] Polymer-based nanopore or nanochannel devices, such as polyethylene terephthalate (PET) and polyimide membranes, have been widely used in energy generator, [4] sensors, [5] ion gating, [6] and ion pump [7] due to their mature membrane building technology. In addition, 2D materials, such as graphene oxide, [8] MXene, [9] Kaolinite, [10] Vermiculite, [11] have also been used to fabricate layered nanofluidic systems. Nevertheless, most of these membranes suffer from insufficient ion transport flux and high membrane inner resistance due to their low pore density and disordered channels, which results in an unfavorable performance. Furthermore, the ion selectivity and energy harvesting are largely affected by the working area of the membrane. [12] Therefore, facile methods are urgently required to fabricate membranes with abundant ordered nanochannels and working area robustness for smart ion transport and multifunctional applications. Mesoporous materials are ideal in constructing nanofluidic devices owing to their ordered mesochannels, high pore density, and controllable thickness. [13] Based on evaporation-induced self-assembly (EISA) strategy, [14] a series of mesoporous materials, including mesoporous silica, [15] mesoporous carbon, [16] and mesoporous carbon-silica, [17] have been used to develop mesoporous nanofluidic systems. Mesoporous heterogeneous Asymmetric nanofluidic devices hold great potential in energy conversion applications. However, most of the existing asymmetric nanofluidic devices remain a single-level asymmetric structure and a single-ion selective layer, which results in weak ion selectivity and limited energy conversion efficiency. Herein, a multi-level asymmetric mesoporous carbon/anodized aluminum/ mesoporous silica (MC/AAO/MS) nanofluidic device with abundant and ordered mesochannels is constructed from super-assembly strategy. The resultant MC/AAO/MS exhibits diode-like ion transport and outstanding ion storage-release performance. Importantly, MC/AAO/MS couples the MC and MS dual-ion selective layers, which ensures a high ionic conductance and evidently enhances the cation selectivity. Thereby, the MC/AAO/MS demonstrates ascendant salinity gradient energy conversion performance. The power density and conversion efficiency can reach up to 5.37 W m −2 and 32.79%, respectively. Noteworthy, a good energy conversion performance of 63 mW m −2 can still be achieved upon high working area, outperforming 300% of the performance of MC/AAO and MS/AAO single-level asymmetric nanochannels. Theoretical calculation further verifies that the multi-level asymmetric structure and dual-ion selective transport are the reason for the enhanced cation selectivity and energy conversion efficiency. This work opens a new avenue for constructing multi-level asymmetric structured nanofluidic devices for various applications.

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Super-assembly of freestanding graphene oxide-aramid fiber membrane with T-mode subnanochannels for sensitive ion transport

Abstract: Biomimetic nacre-like membranes composed of two-dimensional lamellar sheets and one-dimensional nanofibers exhibit high mechanical strength and excellent stability. Thus, they show substantial application in the field of membrane science and...

Cited by 10 publications

References 56 publications

Nanochannel‐Based Ion Transport and Its Application in Osmotic Energy Conversion: A Critical Review

Nanochannel‐Based Ion Transport and Its Application in Osmotic Energy Conversion: A Critical Review

Interfacial Assembly of 2D Graphene‐Derived Ion Channels for Water‐Based Green Energy Conversion

Super‐Assembled Multi‐Level Asymmetric Mesochannels for Coupled Accelerated Dual‐Ion Selective Transport

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