Regulation of bioinspired ion diodes: From fundamental study to blue energy harvesting

Hao, Junran; Wu, Rong; Zhou, Jiale; Zhou, Yahong; Jiang, Lei

doi:10.1016/j.nantod.2022.101593

Cited by 11 publications

(16 citation statements)

References 132 publications

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“…Pioneer studies have demonstrated that the ionic rectification effect can be caused by breaking the symmetry of the nanochannel system. 278 The asymmetric factors primarily include two aspects: the properties of the nanochannel (e.g., geometry, 279,285 surface charge distribution, 281,287 wettability 53 ) and the properties of the electrolyte (e.g., electrolyte pressure, concentration, pH value). 280 Similar to the salinity gradient conversion technologies, the study methods on this subject can also be divided into the three categories: experimental investigations (the design of nanofluidic devices and current-voltage curve measurements), theoretical calculations (continuum-based electrostatic calculations employing Poisson-Boltzmann equations and Nernst-Plank equations) and molecular simulations (observing the behavior of ions at atom level).…”

Section: Nanofluidics Iontronicsmentioning

confidence: 99%

“…Ionic rectifying transport phenomenon was observed in certain types of nanofluidic devices, which lead to the applications of ionic diodes. 6,34,[278][279][280][281][282][283][284][285][286] Similar to electronic diodes, these diode-like nanochannels can be used to turn the ionic flow on and off under the oscillating voltage bias. According to the effect of ion rectification, nanofluidic devices can be designed to mimic electronic systems, such as logical gates, 6 memristors, 34 switches, 284 rectifiers, 54,283 transistors, 285 and ion sensors.…”

Section: Nanofluidics Iontronicsmentioning

confidence: 99%

“…Nanofluidics iontronics has arisen with the discovery of the specific transport behavior of ions in nanochannels. Ionic rectifying transport phenomenon was observed in certain types of nanofluidic devices, which lead to the applications of ionic diodes 6,34,278–286 . Similar to electronic diodes, these diode‐like nanochannels can be used to turn the ionic flow on and off under the oscillating voltage bias.…”

Section: Simulations For the Applications Of Nanofluidicsmentioning

confidence: 99%

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Multiscale simulations of nanofluidics: Recent progress and perspective

Xie

2023

WIREs Comput Mol Sci

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Nanofluidics research has achieved a significant growth over the past few years. New phenomena of nanoscaled fluid flows are being reported continuously, such as altered liquid properties, fast flows, and ion rectification, which attract tremendous research interests in many fields, such as membrane science, biological nanochips, and energy conventions. Multiscale simulations, covering quantum mechanics, molecular mechanics, coarse‐grained particle dynamics (mesoscale), and continuum mechanics, have shown their great advantages in studying the new frontier of nanofluidics in academia and industry, which is in range of 1–1000 nm scale. These simulations provide the opportunity to visualize the nanofluidics applications existed in the minds of scientists and then guide experimental design to realize the potential of nanofluidics applications in industrial. In this article, we attempt to give a comprehensive review of nanofluidics from the aspect of multiscale simulations. The methodology and role of various simulation methods used in the investigation of nanofluidics are presented. The properties and characteristics of nanofluidics are summarized. The applications of nanofluidics in recent years are emphasized. And then the development of simulation methods and the application of nanofluidics are also prospected.This article is categorized under: Molecular and Statistical Mechanics > Molecular Dynamics and Monte‐Carlo Methods Software > Simulation Methods

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Section: Nanofluidics Iontronicsmentioning

confidence: 99%

Section: Nanofluidics Iontronicsmentioning

confidence: 99%

Section: Simulations For the Applications Of Nanofluidicsmentioning

confidence: 99%

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Multiscale simulations of nanofluidics: Recent progress and perspective

Xie

2023

WIREs Comput Mol Sci

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“…This clean energy has been commonly harvested by reverse electrodialysis (RED) through permselective membranes. [2,3] For example, membranes of aramid nanofiber@montmorillonite (ANF@MMT), [4] black phosphorus (BP) [5] and graphene oxide/silk nanofibers/graphene oxide (GO/SNF/GO) [6] have been successfully fabricated for salinity gradient energy harvesting. These membranes have exhibited good permeability and energy-harvesting performance.…”

Section: Introductionmentioning

confidence: 99%

In Situ Growth of Imine‐Bridged Anion‐Selective COF/AAO Membrane for Ion Current Rectification and Nanofluidic Osmotic Energy Conversion

Chen,

Yang,

Wang

et al. 2023

Adv Funct Materials

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Facing the energy crisis, using the salinity gradient between seawater and freshwater for osmotic energy conversion is a direct way to obtain energy. So far, most nanofluidic membranes utilized for osmotic energy generation are cation‐selective. Given that both anion‐ and cation‐selective membranes have the identical importance for energy conversion devices, it is of great significance to develop anion‐selective membranes. Herein, an anion‐selective membrane is synthesized by in situ growth of imine‐bridged covalent organic framework (COF) on ordered anodic aluminum oxide (AAO) at room temperature. The imine groups and residual amino groups of COF can combine with protons in neutral solution, enabling the COF positively charged and efficiently transport of anions. Particularly, due to the asymmetry in the charge and structure of COF/AAO, the as‐prepared membrane exhibits excellent ionic current rectification property, which can inhibit ion concentration polarization effectively and possess high ion selectivity and permeability. Using the present COF/AAO membrane, salinity gradient energy can be successfully harvested from solutions with high salt content, and the output power density reached 17.95W m−2 under a 500‐fold salinity gradient. The study provides a new avenue for construction and application of anion‐selective membranes in the smart ion transport and efficient energy conversion.

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“…Owing to the exhaustion of traditional nonrenewable resources and increasingly severe global environmental problems, it is necessary to strike a better balance between energy security, environmental protection, and economic development. − As an abundant, sustainable, renewable, and stable energy resource, salinity gradient energy between the seawater and river water, which is also known as “blue energy”, can be harvested. − In theory, 0.8 kW of energy can be produced from every cubic meter water since the chemical potential differences are constructed with the salt concentration differences, which is almost comparable with the hydrostatic pressure energy that is harvested from a 280 m high water column. − This worldwide blue energy can be gathered by nanofluidic systems with cation- or anion-exchange nanochannels using membrane technologies, such as pressure-retarded osmosis (PRO) and reverse electrodialysis (RED). , Among them, RED attracts significant attention as it can directly transform the electrochemical potentials into electrical energy, and its applications are closely related with the nature of the ion exchange nanochannel membranes. − In recent years, various ion exchange nanochannel membranes with enhanced ion selectivity and high mass flux, such as single-layer MoS 2 nanopores, mesoporous carbon/anodic aluminum oxide (AAO), ordered mesoporous silica/AAO, heterogeneous MXene/PS- b -P2VP, polyamide modified graphene oxide/AAO, polymer polystyrenesulfonate (PSS) incorporated metal organic framework (MOF)/AAO, bacterial cellulose nanofiber/GO, and sulfonated poly(ether ketone)/AAO/polypyrrole composite membrane have been explored to assemble into salinity gradient power conversion devices. However, not only the competition of selectivity and permeability but also the instability and high cost of these nanochannel membranes have led to the low power density and further limit their realistic scale-up applications. , Thus, it is still necessary to develop a new type of nanochannel membrane through designing and controlling the characteristics of the nanomaterials to handle these practical challenges. , …”

Section: Introductionmentioning

confidence: 99%

Interfacial Super-Assembly of Intertwined Nanofibers toward Hybrid Nanochannels for Synergistic Salinity Gradient Power Conversion

Awati

Zhou

Shi

et al. 2023

ACS Appl. Mater. Interfaces

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Capturing the abundant salinity gradient power into electric power by nanofluidic systems has attracted increasing attention and has shown huge potential to alleviate the energy crisis and environmental pollution problems. However, not only the imbalance between permeability and selectivity but also the poor stability and high cost of traditional membranes limit their scale-up realistic applications. Here, intertwined “soft-hard” nanofibers/tubes are densely super-assembled on the surface of anodic aluminum oxide (AAO) to construct a heterogeneous nanochannel membrane, which exhibits smart ion transport and improved salinity gradient power conversion. In this process, one-dimensional (1D) “soft” TEMPO-oxidized cellulose nanofibers (CNFs) are wrapped around “hard” carbon nanotubes (CNTs) to form three-dimensional (3D) dense nanochannel networks, subsequently forming a CNF-CNT/AAO hybrid membrane. The 3D nanochannel networks constructed by this intertwined “soft-hard” nanofiber/tube method can significantly enhance the membrane stability while maintaining the ion selectivity and permeability. Furthermore, benefiting from the asymmetric structure and charge polarity, the hybrid nanofluidic membrane displays a low membrane inner resistance, directional ionic rectification characteristics, outstanding cation selectivity, and excellent salinity gradient power conversion performance with an output power density of 3.3 W/m2. Besides, a pH sensitive property of the hybrid membrane is exhibited, and a higher power density of 4.2 W/m2 can be achieved at a pH of 11, which is approximately 2 times more compared to that of pure 1D nanomaterial based homogeneous membranes. These results indicate that this interfacial super-assembly strategy can provide a way for large-scale production of nanofluidic devices for various fields including salinity gradient energy harvesting.

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Regulation of bioinspired ion diodes: From fundamental study to blue energy harvesting

Cited by 11 publications

References 132 publications

Multiscale simulations of nanofluidics: Recent progress and perspective

Multiscale simulations of nanofluidics: Recent progress and perspective

In Situ Growth of Imine‐Bridged Anion‐Selective COF/AAO Membrane for Ion Current Rectification and Nanofluidic Osmotic Energy Conversion

Interfacial Super-Assembly of Intertwined Nanofibers toward Hybrid Nanochannels for Synergistic Salinity Gradient Power Conversion

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