Concise and efficient asymmetric homogeneous Janus membrane for high-performance osmotic energy conversion based on oppositely charged montmorillonite

Hao, Jinlin; Ma, Shuhui; Hou, Yuhan; Wang, Weijie; Dai, Xi; Sui, Xin

doi:10.1016/j.electacta.2022.140581

Cited by 23 publications

(17 citation statements)

References 38 publications

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“…Hierarchical nanochannel membranes consisting of heterogeneous porous polymers with different nanopore sizes have also been exquisitely designed for osmotic energy conversion 26,27,51,52 . Amphiphilic block copolymers bearing multifunctional macromolecular blocks can form porous polymers with well-defined mesopore structures, thus providing an ideal candidate for the construction of nanochannel membranes 25,53 .…”

Section: Osmotic Energy Harvestingmentioning

confidence: 99%

Hierarchically engineered nanochannel systems with pore-in/on-pore structures

Cao

Xiong

et al. 2023

NPG Asia Mater

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Biological ion channels featuring asymmetries in structure, composition, and charge distribution have superior controllable ion transport properties, such as ion selectivity, ion gating, and ion rectification, by which life executes diverse activities, including signal transduction, cell motility, and mass and energy transfer. Inspired by this, researchers have never stopped pursuing artificial ion channels that can achieve comparable functions. Despite successful explorations in many fields, current homogeneous nanochannels, however, have not yet offered sufficient rewards comparable to those of their natural counterparts. However, hierarchically engineered heterogeneous nanochannels have gradually come onto the stage because of their excellent ion selectivity, permeability, and rectification properties and thus have been shining brilliantly in fields such as selective ion transport, energy conversion, biomolecular separation, and detection. In this article, we briefly review the recent advances of hierarchically engineered nanochannel systems in terms of pore-on-pore and pore-in-pore structures, with an emphasis on promising applications, including ion-selective transport, osmotic energy harvesting, separation, and biosensing. Finally, current challenges and conceivable solutions are also discussed to advance the design and applications of hierarchical nanochannel systems.

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Section: Osmotic Energy Harvestingmentioning

confidence: 99%

Hierarchically engineered nanochannel systems with pore-in/on-pore structures

Cao

Xiong

et al. 2023

NPG Asia Mater

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“…[115][116][117] Bilayer heterostructural composite membranes can prevent the accumulation of counter ions and reduce the effects of concentration polarization due to structural and/or charge asymmetry. [118][119][120] Hao et al [121] composited positively charged MMT and negatively charged MMT membrane to fabricate MMT-PAA/ MMT-PEI (MAME) composite membrane with heterostructure (Figure 15d). The MAME membrane showed a diode-like current-voltage curve in 100 mm KCl solution (Figure 15e), demonstrating that the membrane has rectification properties.…”

Section: Concentration Cellsmentioning

confidence: 99%

Section: Concentration Cellsmentioning

confidence: 99%

Surface Charge Modification on 2D Nanofluidic Membrane for Regulating Ion Transport

Xie

Tang

Qin

et al. 2022

Adv Funct Materials

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2D nanofluidic membranes are capable of regulating ion transport toward various applications concerning energy and environment, which is primarily contributed by the excess charge on the interior surface of narrow nanoscale pores. However, there is still a lack of comprehensive summaries and discussions on the surface charge modification principles and strategies of 2D nanofluidic membranes, as well as the practical applications of charge‐modified 2D nanofluidic membranes for regulating ion transport. In this review, the surface charge modification principles and charge modification methods of 2D nanofluidic membranes are first introduced in detail, which is of great significance for improving the ion regulation capability of membranes and realizing the design of nanochannel materials. Next, recent advances in the two typical applications of concentration cells and water treatment based on charge‐modified 2D nanofluidic membranes are summarized. Finally, some challenges and prospects related to charge‐modified 2D nanofluidic membranes are discussed to indicate directions for future research in this field. It is anticipated that this review will provide valuable strategies for the development of high‐performance charge‐modified 2D nanofluidic membranes toward energy and environment applications.

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“…The performance of the membrane largely determines the level of energy conversion efficiency [ 105 ]. Hydrogel materials are widely used as ion-selective membranes for salinity gradient energy conversion [ 106 ].…”

Section: Applicationsmentioning

confidence: 99%

Construction and Ion Transport-Related Applications of the Hydrogel-Based Membrane with 3D Nanochannels

Hou

Hao

et al. 2022

Polymers

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Hydrogel is a type of crosslinked three-dimensional polymer network structure gel. It can swell and hold a large amount of water but does not dissolve. It is an excellent membrane material for ion transportation. As transport channels, the chemical structure of hydrogel can be regulated by molecular design, and its three-dimensional structure can be controlled according to the degree of crosslinking. In this review, our prime focus has been on ion transport-related applications based on hydrogel materials. We have briefly elaborated the origin and source of hydrogel materials and summarized the crosslinking mechanisms involved in matrix network construction and the different spatial network structures. Hydrogel structure and the remarkable performance features such as microporosity, ion carrying capability, water holding capacity, and responsiveness to stimuli such as pH, light, temperature, electricity, and magnetic field are discussed. Moreover, emphasis has been made on the application of hydrogels in water purification, energy storage, sensing, and salinity gradient energy conversion. Finally, the prospects and challenges related to hydrogel fabrication and applications are summarized.

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Concise and efficient asymmetric homogeneous Janus membrane for high-performance osmotic energy conversion based on oppositely charged montmorillonite

Cited by 23 publications

References 38 publications

Hierarchically engineered nanochannel systems with pore-in/on-pore structures

Hierarchically engineered nanochannel systems with pore-in/on-pore structures

Surface Charge Modification on 2D Nanofluidic Membrane for Regulating Ion Transport

Construction and Ion Transport-Related Applications of the Hydrogel-Based Membrane with 3D Nanochannels

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