Characterization of Diffusioosmotic Ion Transport for Enhanced Concentration-Driven Power Generation via Charge Heterogeneity in Nanoporous Membranes DOI
Dongwoo Seo, Sangjin Seo, Taesung Kim

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 8, 2024

Nanoscopic mass/ion transport through heterogeneous nanostructures with various physicochemical environments occurs in both natural and artificial systems. Concentration gradient-driven mechanisms, such as diffusioosmosis (DO), are primarily governed by the structural electrical features of nanostructures. However, these phenomena under chemical conditions have not been adequately investigated. In this study, we fabricated a pervaporation-based particle-assembled membrane (PAM)-integrated micro-/nanofluidic device that facilitates easy tuning surface charge heterogeneity nanopores/nanochannels. The nanochannels consisted two in-series PAMs. was used to quantitatively measure electric signals generated DO within single electrolyte or combination electrolytes. Then, characterized ion changing applying electrolytic conditions, characterizing concentration-driven power generation conditions. We found only does provide additional resistance but also manipulation enables effective modulation optimization generators regarding selectivity. conjunction heterogeneity, significantly affected net flux enhancing even negating Hence, anticipate platform results will deeper understanding complex optimizing improving practical applications, energy conversion/harvesting, molecular focusing/separation, ionic diodes memristors.

Language: Английский

Harvesting sustainable osmotic energy: the art of nanofluidic hydrogel membranes DOI
Brij Mohan, Kamal Singh,

Elnur Ahmadov

et al.

Journal of Energy Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 1, 2025

Language: Английский

Citations

2
Synthesis of Mimicking Plant Cell Wall‐Like Anti‐Swelling Hydrogels Based on a “Bottom‐Up” Strategy and Their Application in Osmotic Energy Harvesting DOI Open Access

Zhuowen Zhang,

Zhen Wang, Xinrui Wang

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 23, 2025

Abstract Osmotic energy harvesting via reverse electrodialysis (RED) presents a promising approach for converting salinity gradient into usable power. However, the broad implementation of this technology faces significant barriers, including inherent instability conventional ion‐selective membranes, intricacy fabrication techniques, and unresolved environmental challenges. This hydrogel combines structural adhesive properties carboxymethyl cellulose (CMC) double‐bond lignosulfonate sodium (DLS) to enhance antiswelling performance. DLS is functionalized through hydroxyl‐alkyne click reaction, transforming it highly reactive supramolecule. Simultaneously, CMC integrated gel network using choline chloride/acrylic acid deep eutectic solvent, where acrylic acts as both hydrogen bond donor polymerizable monomer. The resulting demonstrates remarkable ion selectivity efficient osmotic harvesting, achieving an ultralow swelling rate 0.385, output power density 10.10 W m − 2 (double commercial benchmark 5.0 ), 99.10%. study underscores potential biomass‐based hydrogels sustainable, high‐performance materials offering viable pathway next‐generation technologies.

Language: Английский

Citations

1
Space Charge Improved Poly(Aryl Ether Sulfone) Composite Membrane for Osmotic Energy Conversion DOI

Jundong Zhong,

Hongyan Qi, Tingting Xu

et al.

Chinese Journal of Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 16, 2025

Comprehensive Summary The ion‐selective porous membrane is the key component in osmotic energy conversion, and optimizing its permeability selectivity crucial for improving output performance. Here, to construct a synergistically enhanced generator, surface space charge 3D composite prepared by inserting sulfonated hydrogels into ion channels with tunable charge. membrane's improved from 0.66 0.94 increasing density on spatial of membrane. experimental simulation results showed that synergistic enhancement charges significantly electrostatic interactions between ions channels, which led selectivity, net ionic fluxes, presents an advanced power about 6.4 W·m –2 under 50‐fold concentration gradient, nearly 2 times phase inversion without hydrogels. Our study provides promising solution constructing high‐performance generators.

Language: Английский

Citations

0
Engineered Ionic Rectifier with Steep Channel Gradient from Angstrom‐Scale to Mesoscale Based on Ultrathin MXene‐Capped Single Conical Mesochannel: A Promising Platform for Efficient Osmotic Energy Generation DOI Open Access

Wen‐Hsin Hung,

Ting‐Yi Huang,

Chia‐An Lung

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: March 3, 2025

Abstract Ionic rectifier that mimics the directional ion transport in biological channels has been shown with potential toward boosting osmotic energy conversion performance. However, achieved power by existing rectifying devices is still limited, because they are constructed based on tiny nanoscale channels, which experience high resistance. Here, a novel high‐performance ionic (abbreviated as MXene@MC) steep channel gradient from angstrom‐scale to mesoscale reported capping an ultrathin 2D Ti 3 C 2 T x MXene laminate asymmetric conical mesochannel (MC). The device can strongly rectify current (with ratio of 7.3‐fold) even 0.5 m electrolyte solution, and thus single achieve ultra‐large conductance 0.596 µS. These features enable MXene@MC ultrahigh performance generator, achieving unprecedented 343 pW under 1000‐fold salinity at neutral pH. Notably, simulations also provided demonstrate findings proposed efficient conversion. This study unravels underlying physics induced apparent structural asymmetry ion‐selective thereby providing promising platform for further development generators.

Language: Английский

Citations

0
A general approach of reinforcing hydrogels for salinity-gradient energy harvesting DOI
Ying-Wen Huang, Peiyan Shen, Qiaozhi Ma

et al.

Nano Energy, Journal Year: 2025, Volume and Issue: unknown, P. 110898 - 110898

Published: March 1, 2025

Language: Английский

Citations

0
Modulating nanopore size and ion transport using (Anti)-Polyelectrolyte effects inspired by the nuclear pore complex DOI
Tianji Ma, Xuan Kang,

Y. Ngono-Ravache

et al.

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: unknown, P. 137520 - 137520

Published: April 1, 2025

Language: Английский

Citations

0
Mechanical Flexibility Improves Thermal Conduction of Confined Liquid in Nanofluidics DOI
Ziqiao Chen,

Renjie He,

Xiaotong Yu

et al.

The Journal of Physical Chemistry Letters, Journal Year: 2025, Volume and Issue: unknown, P. 4765 - 4772

Published: May 7, 2025

Nanofluidics systems demonstrate the potential to address thermal management challenge in nanoelectronics devices with extraordinary transport properties. However, phonon features different substrates have led contradictory properties of confined liquid. Understanding correlation between nanoconfined liquid and substrate vibration is critical importance. Herein, we that resonance water molecules can significantly enhance conductivity water. Detailed analyses reveal shortens lifetime hydrogen bonds, promotes mobility molecules, enhances conductivity. Moreover, effect more pronounced a reduced channel size owing stronger solid-liquid interactions. These results findings offer fundamental understanding provide theoretical guidance for developing nanofluidics-based cooling strategies.

Language: Английский

Citations

0
Clay-Based Nanofluidic Membrane with Enhanced Space Charge for Robust Osmotic Energy Harvesting DOI
Qijun Zheng, Yue Shen, Lina Wang

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: May 8, 2025

Converting the salinity gradient energy into electric through permselective membranes has great potential to alleviate crisis. However, competition between selectivity and permeability, along with instability of traditional membranes, limits their realistic applications. Herein, a robust clay-based nanofluidic membrane aramid nanofiber@palygorskite/anodic alumina oxide (ANF@PAL/AAO) 3D interworking network been fabricated for efficient osmotic harvesting. The interconnected nanochannels stacked by needle-like PAL provide more shorter paths ion transport, thereby increasing permeability. Moreover, collaboration surface charge space brought ANFs improves selectivity, further enhancing conversion performance. Results show that as-prepared ANF@PAL/AAO displays power output 45 W m-2 at 500-fold NaCl can withstand acidity/alkalinity high environments. present work paves facile way application devices in practical conversion.

Language: Английский

Citations

0
Two-Sided Asymmetric Nanofluidic Membrane for Enhanced Ion Transport and Osmotic Energy Harvesting DOI Creative Commons
Qijun Zheng, Yue Shen, Jiachen Lu

et al.

Chemical Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Nanofluidic membranes hold great potential for osmotic energy conversion.

Language: Английский

Citations

0
Characterization of Diffusioosmotic Ion Transport for Enhanced Concentration-Driven Power Generation via Charge Heterogeneity in Nanoporous Membranes DOI
Dongwoo Seo, Sangjin Seo, Taesung Kim

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 8, 2024

Nanoscopic mass/ion transport through heterogeneous nanostructures with various physicochemical environments occurs in both natural and artificial systems. Concentration gradient-driven mechanisms, such as diffusioosmosis (DO), are primarily governed by the structural electrical features of nanostructures. However, these phenomena under chemical conditions have not been adequately investigated. In this study, we fabricated a pervaporation-based particle-assembled membrane (PAM)-integrated micro-/nanofluidic device that facilitates easy tuning surface charge heterogeneity nanopores/nanochannels. The nanochannels consisted two in-series PAMs. was used to quantitatively measure electric signals generated DO within single electrolyte or combination electrolytes. Then, characterized ion changing applying electrolytic conditions, characterizing concentration-driven power generation conditions. We found only does provide additional resistance but also manipulation enables effective modulation optimization generators regarding selectivity. conjunction heterogeneity, significantly affected net flux enhancing even negating Hence, anticipate platform results will deeper understanding complex optimizing improving practical applications, energy conversion/harvesting, molecular focusing/separation, ionic diodes memristors.

Language: Английский

Citations

0