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Zhang X, Wang Y, Zheng J, Yang C, Wang D. Scan-Rate-Dependent Ion Current Rectification in Bipolar Interfacial Nanopores. MICROMACHINES 2024; 15:1176. [PMID: 39337836 PMCID: PMC11433788 DOI: 10.3390/mi15091176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2024] [Revised: 09/20/2024] [Accepted: 09/22/2024] [Indexed: 09/30/2024]
Abstract
This study presents a theoretical investigation into the voltammetric behavior of bipolar interfacial nanopores due to the effect of potential scan rate (1-1000 V/s). Finite element method (FEM) is utilized to explore the current-voltage (I-V) properties of bipolar interfacial nanopores at different bulk salt concentrations. The results demonstrate a strong impact of the scan rate on the I-V response of bipolar interfacial nanopores, particularly at relatively low concentrations. Hysteresis loops are observed in bipolar interfacial nanopores under specific scan rates and potential ranges and divided by a cross-point potential that remains unaffected by the scan rate employed. This indicates that the current in bipolar interfacial nanopores is not just reliant on the bias potential that is imposed but also on the previous conditions within the nanopore, exhibiting history-dependent or memory effects. This scan-rate-dependent current-voltage response is found to be significantly influenced by the length of the nanopore (membrane thickness). Thicker membranes exhibit a more pronounced scan-rate-dependent phenomenon, as the mass transfer of ionic species is slower relative to the potential scan rate. Additionally, unlike conventional bipolar nanopores, the ion current passing through bipolar interfacial nanopores is minimally affected by the membrane thickness, making it easier to detect.
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Affiliation(s)
- Xiaoling Zhang
- School of Smart Health, Chongqing Polytechnic University of Electronic Technology, Chongqing 401331, China
| | - Yunjiao Wang
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China;
| | - Jiahui Zheng
- Key Laboratory of Biorheological Science and Technology, Ministry of Education and Bioengineering College, Chongqing University, Chongqing 400044, China; (J.Z.); (C.Y.)
| | - Chen Yang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education and Bioengineering College, Chongqing University, Chongqing 400044, China; (J.Z.); (C.Y.)
| | - Deqiang Wang
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China;
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2
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Yang ZJ, Yeh LH, Peng YH, Chuang YP, Wu KCW. Enhancing Ionic Selectivity and Osmotic Energy by Using an Ultrathin Zr-MOF-Based Heterogeneous Membrane with Trilayered Continuous Porous Structure. Angew Chem Int Ed Engl 2024; 63:e202408375. [PMID: 38847272 DOI: 10.1002/anie.202408375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2024] [Indexed: 07/23/2024]
Abstract
Designing a nanofluidic membrane with high selectivity and fast ion transport property is the key towards high-performance osmotic energy conversion. However, most of reported membranes can produce power density less than commercial benchmark (5 W/m2), due to the imbalance between ion selectivity and permeability. Here, we report a novel nanoarchitectured design of a heterogeneous membrane with an ultrathin and dense zirconium-based UiO-66-NH2 metal-organic framework (MOF) layer and a highly aligned and interconnected branched alumina nanochannel membrane. The design leads to a continuous trilayered pore structure of large geometry gradient in the sequence from angstrom-scale to nano-scale to sub-microscale, which enables the enhanced directional ion transport, and the angstrom-sized (~6.6-7 Å) UiO-66-NH2 windows render the membrane with high ion selectivity. Consequently, the novel heterogeneous membrane can achieve a high-performance power of ~8 W/m2 by mixing synthetic seawater and river water. The power density can be largely upgraded to an ultrahigh ~17.1 W/m2 along with ~48.5 % conversion efficiency at a 50-fold KCl gradient. This work not only presents a new membrane design approach but also showcases the great potential of employing the zirconium-based MOF channels as ion-channel-mimetic membranes for highly efficient blue energy harvesting.
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Affiliation(s)
- Zhen-Jie Yang
- Department of Chemical Engineering, National Taiwan University, Taipei, 10617, Taiwan
| | - Li-Hsien Yeh
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, 10607, Taiwan
- Advanced Manufacturing Research Center, National Taiwan University of Science and Technology, Taipei, 10607, Taiwan
| | - Yu-Hsiang Peng
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, 10607, Taiwan
| | - Yi-Ping Chuang
- Department of Chemical Engineering, National Taiwan University, Taipei, 10617, Taiwan
| | - Kevin C-W Wu
- Department of Chemical Engineering, National Taiwan University, Taipei, 10617, Taiwan
- Institute of Biomedical Engineering & Nanomedicine, National Health Research Institute, Keyan Road, Zhunan, Miaoli City, 350, Taiwan
- Center of Atomic Initiative for New Materials (AI-MAT), National Taiwan University, Taipei, 10617, Taiwan
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3
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Zhang X, Hu N, Wang Y, Zhao Y, Wang D. Effect of Membrane Thickness on Ion Transport in pH-Regulated Zero-Depth Interfacial Nanopores. Anal Chem 2024; 96:11009-11017. [PMID: 38934578 DOI: 10.1021/acs.analchem.4c01700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2024]
Abstract
Zero-depth interfacial nanopores, which are formed by two crossed nanoscale channels at their intersection interface, have been proposed to increase the spatial resolution of solid-state nanopores. However, research on zero-depth interfacial nanopores is still in its early stages. Although it has been shown that the current passing through an interfacial nanopore is largely independent of the membrane thickness, existing studies have not fully considered the impact of membrane thickness on other ion transport characteristics within these nanopores. In this paper, we investigate the electrokinetic ion transport phenomenon in the zero-depth interfacial nanopores, especially focusing on the influence of membrane thickness on the ion transport phenomenon. Our model incorporates the Poisson-Nernst-Planck equations and the Navier-Stokes equations, featuring a pH-regulated surface charge density. We find that when the thickness of the nanochannels is close to the interface size of the formed interfacial nanopore, the phenomenon of ion transport in the interfacial nanopore is similar to that in a conventional cylindrical nanopore. However, when the thickness of the nanochannels is much greater than the interface size of the formed interfacial nanopore, several distinct phenomena occur. The surface charge density on the inner walls of the interfacial nanopores has a small peak at the interface of the two crossing nanochannels, and the anion concentration changes greatly between the two nanochannels; that is, a much greater anion concentration forms in the nanochannel near the anode side than in the nanochannel near the cathode side. When the surface charge is nonzero, the electric field within the interfacial nanopore creates three extreme points, and the directions of the local electric fields are opposite at the ends of the membrane.
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Affiliation(s)
- Xiaoling Zhang
- School of Smart Health, Chongqing College of Electronic Engineering, Chongqing 401331, P. R. China
| | - Ning Hu
- Key Laboratory of Biorheological Science and Technology, Ministry of Education and Bioengineering College, Chongqing University, Chongqing 400044, P. R. China
| | - Yunjiao Wang
- Chongqing School, University of Chinese Academy of Sciences, Chongqing 400714, P. R. China
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, P. R. China
| | - Yun Zhao
- School of Smart Health, Chongqing College of Electronic Engineering, Chongqing 401331, P. R. China
| | - Deqiang Wang
- Chongqing School, University of Chinese Academy of Sciences, Chongqing 400714, P. R. China
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, P. R. China
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4
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Tsutsui M, Hsu WL, Garoli D, Leong IW, Yokota K, Daiguji H, Kawai T. Gate-All-Around Nanopore Osmotic Power Generators. ACS NANO 2024; 18:15046-15054. [PMID: 38804145 DOI: 10.1021/acsnano.4c01989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
Nanofluidic channels in a membrane represent a promising avenue for harnessing blue energy from salinity gradients, relying on permselectivity as a pivotal characteristic crucial for inducing electricity through diffusive ion transport. Surface charge emerges as a central player in the osmotic energy conversion process, emphasizing the critical significance of a judicious selection of membrane materials to achieve optimal ion permeability and selectivity within specific channel dimensions. Alternatively, here we report a field-effect approach for in situ manipulation of the ion selectivity in a nanopore. Application of voltage to a surround-gate electrode allows precise adjustment of the surface charge density at the pore wall. Leveraging the gating control, we demonstrate permselectivity turnover to enhanced cation selective transport in multipore membranes, resulting in a 6-fold increase in the energy conversion efficiency with a power density of 15 W/m2 under a salinity gradient. These findings not only advance our fundamental understanding of ion transport in nanochannels but also provide a scalable and efficient strategy for nanoporous membrane osmotic power generation.
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Affiliation(s)
- Makusu Tsutsui
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 5267-0047, Japan
| | - Wei-Lun Hsu
- Department of Mechanical Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Denis Garoli
- Optoelectronics Research Line, Instituto Italiano di Tecnologia, Morego 30, I-16163 Genova, Italy
| | - Iat Wai Leong
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 5267-0047, Japan
| | - Kazumichi Yokota
- National Institute of Advanced Industrial Science and Technology, Takamatsu, Kagawa 761-0395, Japan
| | - Hirofumi Daiguji
- Department of Mechanical Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Tomoji Kawai
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 5267-0047, Japan
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Laucirica G, Toum-Terrones Y, Cayón VM, Toimil-Molares ME, Azzaroni O, Marmisollé WA. Advances in nanofluidic field-effect transistors: external voltage-controlled solid-state nanochannels for stimulus-responsive ion transport and beyond. Phys Chem Chem Phys 2024; 26:10471-10493. [PMID: 38506166 DOI: 10.1039/d3cp06142f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2024]
Abstract
Ion channels, intricate protein structures facilitating precise ion passage across cell membranes, are pivotal for vital cellular functions. Inspired by the remarkable capabilities of biological ion channels, the scientific community has ventured into replicating these principles in fully abiotic solid-state nanochannels (SSNs). Since the gating mechanisms of SSNs rely on variations in the physicochemical properties of the channel surface, the modification of their internal architecture and chemistry constitutes a powerful strategy to control the transport properties and, consequently, render specific functionalities. In this framework, both the design of the nanofluidic platform and the subsequent selection and attachment of different building blocks gain special attention. Similar to biological ion channels, functional SSNs offer the potential to finely modulate ion transport in response to various stimuli, leading to innovations in a variety of fields. This comprehensive review delves into the intricate world of ion transport across stimuli-responsive SSNs, focusing on the development of external voltage-controlled nanofluidic devices. This kind of field-effect nanofluidic technology has attracted special interest due to the possibility of real-time reconfiguration of the ion transport with a non-invasive strategy. These properties have found interesting applications in drug delivery, biosensing, and nanoelectronics. This document will address the fundamental principles of ion transport through SSNs and the construction, modification, and applications of external voltage-controlled SSNs. It will also address future challenges and prospects, offering a comprehensive perspective on this evolving field.
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Affiliation(s)
- G Laucirica
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, CONICET - CC 16 Suc. 4, 1900 La Plata, Argentina.
| | - Y Toum-Terrones
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, CONICET - CC 16 Suc. 4, 1900 La Plata, Argentina.
| | - V M Cayón
- Department of Materials- and Geosciences, Technical University of Darmstadt, Darmstadt, Germany
| | - M E Toimil-Molares
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- Department of Materials- and Geosciences, Technical University of Darmstadt, Darmstadt, Germany
| | - O Azzaroni
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, CONICET - CC 16 Suc. 4, 1900 La Plata, Argentina.
| | - W A Marmisollé
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, CONICET - CC 16 Suc. 4, 1900 La Plata, Argentina.
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6
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Liu TR, Fung MYT, Yeh LH, Chiang CH, Yang JS, Kuo PC, Shiue J, Chen CC, Chen CW. Single-Layer Hexagonal Boron Nitride Nanopores as High-Performance Ionic Gradient Power Generators. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2306018. [PMID: 38041449 DOI: 10.1002/smll.202306018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 11/14/2023] [Indexed: 12/03/2023]
Abstract
Atomically thin two-dimensional (2D) materials have emerged as promising candidates for efficient energy harvesting from ionic gradients. However, the exploration of robust 2D atomically thin nanopore membranes, which hold sufficient ionic selectivity and high ion permeability, remains challenging. Here, the single-layer hexagonal boron nitride (hBN) nanopores are demonstrated as various high-performance ion-gradient nanopower harvesters. Benefiting from the ultrathin atomic thickness and large surface charge (also a large Dukhin number), the hBN nanopore can realize fast proton transport while maintaining excellent cation selectivity even in highly acidic environments. Therefore, a single hBN nanopore achieves the pure osmosis-driven proton-gradient power up to ≈3 nW under 1000-fold ionic gradient. In addition, the robustness of hBN membranes in extreme pH conditions allows the ionic gradient power generation from acid-base neutralization. Utilizing 1 m HCl/KOH, the generated power can be promoted to an extraordinarily high level of ≈4.5 nW, over one magnitude higher than all existing ionic gradient power generators. The synergistic effects of ultrathin thickness, large surface charge, and excellent chemical inertness of 2D single-layer hBN render it a promising membrane candidate for harvesting ionic gradient powers, even under extreme pH conditions.
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Affiliation(s)
- Ting-Ran Liu
- Department of Materials Science and Engineering, National Taiwan University, Taipei, 10617, Taiwan
| | - Man Yui Thomas Fung
- Department of Chemical Engineering, National Taiwan University, of Science and Technology, Taipei, 10607, Taiwan
| | - Li-Hsien Yeh
- Department of Chemical Engineering, National Taiwan University, of Science and Technology, Taipei, 10607, Taiwan
- Advanced Manufacturing Research Center, National Taiwan University of Science and Technology, Taipei, 10607, Taiwan
| | - Chun-Hao Chiang
- Department of Materials Science and Engineering, National Taiwan University, Taipei, 10617, Taiwan
| | - Jhih-Sian Yang
- Department of Chemistry, National Taiwan Normal University, Taipei, 11677, Taiwan
| | - Pai-Chia Kuo
- Institute of Atomic and Molecular Science, Academia Sinica, Taipei, 10617, Taiwan
| | - Jessie Shiue
- Institute of Atomic and Molecular Science, Academia Sinica, Taipei, 10617, Taiwan
| | - Chia-Chun Chen
- Department of Chemistry, National Taiwan Normal University, Taipei, 11677, Taiwan
- Institute of Atomic and Molecular Science, Academia Sinica, Taipei, 10617, Taiwan
| | - Chun-Wei Chen
- Department of Materials Science and Engineering, National Taiwan University, Taipei, 10617, Taiwan
- Center of Condensed Matter Science, National Taiwan University, Taipei, 10617, Taiwan
- Center of Atomic Initiative for New Materials (AI-MAT), National Taiwan University, Taipei, 10617, Taiwan
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7
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Liu Y, Zhang S, Song R, Zeng H, Wang L. Preanchoring Enabled Directional Modification of Atomically Thin Membrane for High-Performance Osmotic Energy Generation. NANO LETTERS 2024; 24:26-34. [PMID: 38117701 DOI: 10.1021/acs.nanolett.3c03041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2023]
Abstract
Salinity gradient energy is an environmentally friendly energy source that possesses potential to meet the growing global energy demand. Although covalently modified nanoporous graphene membranes are prospective candidates to break the trade-off between ion selectivity and permeability, the random reaction sites and inevitable defects during modification reduce the reaction efficiency and energy conversion performance. Here, we developed a preanchoring method to achieve directional modification near the graphene nanopores periphery. Numerical simulation revealed that the improved surface charge density around nanopores results in exceptional K+/Cl- selectivity and osmotic energy conversion performance, which agreed well with experimental results. Ionic transport measurements showed that the directionally modified graphene membranes achieved an outstanding power density of 81.6 W m-2 with an energy conversion efficiency of 35.4% under a 100-fold salinity gradient, outperforming state-of-the-art graphene-based nanoporous membranes. This work provided a facile approach for precise modification of nanoporous graphene membranes and opened up new ways for osmotic power harvesting.
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Affiliation(s)
- Yuancheng Liu
- National Key Laboratory of Advanced Micro and Nano Manufacture Technology, School of Integrated Circuits, Peking University, Beijing, 100871, China
| | - Shengping Zhang
- National Key Laboratory of Advanced Micro and Nano Manufacture Technology, School of Integrated Circuits, Peking University, Beijing, 100871, China
- Academy for Advanced Interdisciplinary Studies and Center for Nanochemistry, Beijing Science and Engineering Center for Nanocarbons, Peking University, Beijing 100871, China
- Beijing Graphene Institute, Beijing, China 100095, China
| | - Ruiyang Song
- National Key Laboratory of Advanced Micro and Nano Manufacture Technology, School of Integrated Circuits, Peking University, Beijing, 100871, China
| | - Haiou Zeng
- National Key Laboratory of Advanced Micro and Nano Manufacture Technology, School of Integrated Circuits, Peking University, Beijing, 100871, China
| | - Luda Wang
- National Key Laboratory of Advanced Micro and Nano Manufacture Technology, School of Integrated Circuits, Peking University, Beijing, 100871, China
- Academy for Advanced Interdisciplinary Studies and Center for Nanochemistry, Beijing Science and Engineering Center for Nanocarbons, Peking University, Beijing 100871, China
- Beijing Graphene Institute, Beijing, China 100095, China
- Beijing Advanced Innovation Center for Integrated Circuits, Beijing, China 100871, China
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8
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Liu T, He X, Zhao J, Shi L, Zhou T, Wen L. Ion transport properties in the pH-dependent bipolar nanochannels. Electrophoresis 2023; 44:1847-1858. [PMID: 37401641 DOI: 10.1002/elps.202300073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 06/05/2023] [Accepted: 06/20/2023] [Indexed: 07/05/2023]
Abstract
In recent years, researchers have made significant strides in understanding the ion transport characteristics of nanochannels, resulting in the development of various materials, modifications, and shapes of nano ion channel membranes. The aim is to create a nanochannel membrane with optimal ion transport properties and high stability by adjusting factors, such as channel size, surface charge, and wettability. However, during the nanochannel film fabrication process, controlling the geometric structures of nanochannels can be challenging. Therefore, exploring the stability of nanochannel performance under different geometric structures has become an essential aspect of nanochannel design. This article focuses on the study of cylindrical nanochannel structures, which are categorized based on the different methods for generating bipolar surface charges on the channel's inner surface, either through pH gradient effects or different material types. Through these two approaches, the study designed and analyzed the stability of ion transport characteristics in two nanochannel models under varying geometric structures. Our findings indicate that nanochannels with bipolar properties generated through pH gradients demonstrate more stable ion selection, whereas nanochannels with bipolar properties generated through different materials show stronger stability in ion rectification. This conclusion provides a theoretical foundation for future nanochannel designs.
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Affiliation(s)
- Tao Liu
- Mechanical and Electrical Engineering College, Hainan University, Haikou, Hainan, P. R. China
| | - Xiaohan He
- Mechanical and Electrical Engineering College, Hainan University, Haikou, Hainan, P. R. China
| | - Juncheng Zhao
- Mechanical and Electrical Engineering College, Hainan University, Haikou, Hainan, P. R. China
| | - Liuyong Shi
- Mechanical and Electrical Engineering College, Hainan University, Haikou, Hainan, P. R. China
| | - Teng Zhou
- Mechanical and Electrical Engineering College, Hainan University, Haikou, Hainan, P. R. China
| | - Liping Wen
- Mechanical and Electrical Engineering College, Hainan University, Haikou, Hainan, P. R. China
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, P. R. China
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9
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Jiang Y, Hu R, Yang C, Zhou Z, Yuan G, Zhou H, Hu S. Surface diffusion enhanced ion transport through two-dimensional nanochannels. SCIENCE ADVANCES 2023; 9:eadi8493. [PMID: 37922345 PMCID: PMC10624347 DOI: 10.1126/sciadv.adi8493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 10/05/2023] [Indexed: 11/05/2023]
Abstract
Fast ion permeation in nanofluidic channels has been intensively investigated in the past few decades because of their potential uses in separation technologies and osmotic energy harvesting. Mechanisms governing ion transport at this ultimately small spatial regime remain to be understood, which can only be achieved in nanochannels that are controllably fabricated. Here, we report the fabrication of two-dimensional nanochannels with their top and bottom walls consisting of atomically flat graphite and mica crystals, respectively. The distinct wall structures and properties enable us to investigate interactions between ions and interior surfaces. We find an enhanced ion transport within the channels that is orders of magnitude faster than that in the bulk solutions. The result is attributed to the highly dense packing of adsorbed cations at mica surfaces, where they diffuse in-plane. Our work provides insights into surface effects on ion transport at the nanoscale.
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Affiliation(s)
- Yu Jiang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China
| | - Rong Hu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China
| | - Chongyang Yang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China
| | - Zhihua Zhou
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China
| | - Gang Yuan
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China
| | - Han Zhou
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China
| | - Sheng Hu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China
- Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen 361005, P. R. China
- Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361005, P. R. China
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10
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Qiao N, Li Z, Zhang Z, Guo H, Liao J, Lu W, Li C. Effect of membrane thermal conductivity on ion current rectification in conical nanochannels under asymmetric temperature. Anal Chim Acta 2023; 1278:341724. [PMID: 37709465 DOI: 10.1016/j.aca.2023.341724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 08/13/2023] [Accepted: 08/14/2023] [Indexed: 09/16/2023]
Abstract
Nowadays, there have been extensively theoretical studies on the phenomenon of ion current rectification (ICR) induced by the asymmetric electrical double layer (EDL). As a key factor influencing the behavior of ion transport, temperature is given high priority by researchers. The thermal conductivity of the material commonly employed to prepare nanopores is 2-3 times higher than that of liquid solutions, which may affect ion transport within the nanochannel. However, it is often neglected in previous studies. Thus, we investigate the effect of membrane thermal conductivity on the ICR in conical nanochannels under asymmetric temperature. Based on the PNP-NS theoretical model, the ion current, the rectification ratio, as well as the temperature and ion concentration distributions along the nanochannel are calculated. It is found that the thermal conductivity of the solid membrane noticeably affects the temperature distribution across the nanochannel, altering the ion transport behavior. Larger membrane thermal conductivity tends to homogenize the temperature distribution in the nanochannel, leading to a decline of ionic thermal down-diffusion by a positive temperature difference and ionic thermal up-diffusion by a negative temperature difference, with the former promoting and the latter inhibiting ion current. As a result, the rectification ratio decreases under the positive temperature difference and increases under the negative temperature difference as the thermal conductivity of the membrane increases. These studies will be instructive for the design of nanofluidic diodes and biosensors.
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Affiliation(s)
- Nan Qiao
- School of Mechanical Engineering, Guangxi University, Nanning, Guangxi, 530004, China
| | - Zhenquan Li
- School of Mechanical Engineering, Guangxi University, Nanning, Guangxi, 530004, China
| | - Zhe Zhang
- School of Mechanical Engineering, Guangxi University, Nanning, Guangxi, 530004, China
| | - Hengyi Guo
- School of Mechanical Engineering, Guangxi University, Nanning, Guangxi, 530004, China
| | - Jiaqiang Liao
- School of Mechanical Engineering, Guangxi University, Nanning, Guangxi, 530004, China
| | - Wei Lu
- School of Mechanical Engineering, Guangxi University, Nanning, Guangxi, 530004, China
| | - Changzheng Li
- School of Mechanical Engineering, Guangxi University, Nanning, Guangxi, 530004, China; Guangxi Key Laboratory of Electrochemical Energy Materials, Nanning, Guangxi, 530004, China.
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11
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Li S, Zhang X, Su J. Surface charge density governs the ionic current rectification direction in asymmetric graphene oxide channels. Phys Chem Chem Phys 2023; 25:7477-7486. [PMID: 36852635 DOI: 10.1039/d2cp05137k] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
Charged asymmetric channels are extensively investigated for the design of artificial biological channels, ionic diodes, artificial separation films, etc. These applications are attributed to the unique ionic current rectification phenomenon, where the surface charge density of the channel has a deep influence. In this work, we use molecular dynamics simulations to study the rectification phenomenon in asymmetric graphene oxide channels. A fascinating finding is that the ionic current rectification direction reverses from the negative to positive electric field direction with an increase in surface charge density. Specifically, at low charge density, the ionic flux reaches greater values in the negative electric field due to the enrichment of cations and anions, which provides a sufficient electrostatic shielding effect inside the channel and increases the possibility of ion release by the residues. However, at high charge density, the extremely strong residue attraction induces a Coulomb blockade effect in the negative electric field, which seriously impedes the ion transport and eventually leads to a smaller ionic current. Consequently, this ionic current order transition ultimately results in the rectification reversion phenomenon, providing a new route for the design of some novel nanofluidic devices.
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Affiliation(s)
- Shuang Li
- MIIT Key Laboratory of Semiconductor Microstructure and Quantum Sensing, and Department of Applied Physics, Nanjing University of Science and Technology, Nanjing 210094, China.
| | - Xinke Zhang
- MIIT Key Laboratory of Semiconductor Microstructure and Quantum Sensing, and Department of Applied Physics, Nanjing University of Science and Technology, Nanjing 210094, China.
| | - Jiaye Su
- MIIT Key Laboratory of Semiconductor Microstructure and Quantum Sensing, and Department of Applied Physics, Nanjing University of Science and Technology, Nanjing 210094, China.
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12
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Zheng DC, Hsu JP. Enhancing the osmotic energy conversion of a nanoporous membrane: influence of pore density, pH, and temperature. Phys Chem Chem Phys 2023; 25:6089-6101. [PMID: 36752071 DOI: 10.1039/d2cp05831f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Salinity gradient power, which converts Gibbs free energy of mixing to electric energy through an ion-selective pore, has great potential. Towards practical use, developing membrane-scaled nanoporous materials is desirable and necessary. Unfortunately, the presence of a significant ion concentration polarization (ICP) lowers appreciably the power harvested, especially at a high pore density. To alleviate this problem, we suggest applying an extra pressure difference ΔP across a membrane containing multiple nanopores, taking account of the associated power consumption. The results gathered reveal that the application of a negative pressure difference can improve the power harvested due to the enhanced selectivity. In addition, if the pore density of a membrane is high, raising its pore length is necessary to make the energy harvested economic. For example, if the pore length is 2000 nm and the pore density is 2.5 × 109 pores per cm2, an increment in the power density of 213 mW m-2 can be obtained by applying ΔP = -1 bar at pH 11 and 323 K, where a net positive power density can be retrieved. The performance of the system considered under various conditions is examined in detail, along with associated mechanisms.
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Affiliation(s)
- Ding-Cheng Zheng
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan.
| | - Jyh-Ping Hsu
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan.
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13
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Yadav SK, D M, Singh C, Kumar M, G A, Ramaprabhu S, Nandigana VVR, Nayak PK. Laser-Assisted Scalable Pore Fabrication in Graphene Membranes for Blue-Energy Generation. Chemphyschem 2022; 24:e202200598. [PMID: 36510477 DOI: 10.1002/cphc.202200598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 12/09/2022] [Accepted: 12/12/2022] [Indexed: 12/15/2022]
Abstract
The osmotic energy from a salinity gradient (i. e. blue energy) is identified as a promising non-intermittent renewable energy source for a sustainable technology. However, this membrane-based technology is facing major limitations for large-scale viability, primarily due to the poor membrane performance. An atomically thin 2D nanoporous material with high surface charge density resolves the bottleneck and leads to a new class of membrane material the salinity gradient energy. Although 2D nanoporous membranes show extremely high performance in terms of energy generation through the single pore, the fabrication and technical challenges such as ion concentration polarization make the nanoporous membrane a non-viable solution. On the other hand, the mesoporous and micro porous structures in the 2D membrane result in improved energy generation with very low fabrication complexity. In the present work, we report femtosecond (fs) laser-assisted scalable fabrication of μm to mm size pores on Graphene membrane for blue energy generation for the first time. A remarkable osmotic power in the order of μW has been achieved using mm size pores, which is about six orders of magnitudes higher compared to nanoporous membranes, which is mainly due to the diffusion-osmosis driven large ionic flux. Our work paves the way towards fs laser-assisted scalable pore creation in the 2D membrane for large-scale osmotic power generation.
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Affiliation(s)
- Sharad Kumar Yadav
- Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai, 600036, India.,Department of Physics, Indian Institute of Technology Madras, Chennai, 600 036, India.,Micro Nano and Bio-Fluidics Group, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Manikandan D
- Department of Physics, Indian Institute of Technology Madras, Chennai, 600 036, India
| | - Chob Singh
- Department of Physics, Indian Institute of Technology Madras, Chennai, 600 036, India
| | - Mukesh Kumar
- Department of Physics, Indian Institute of Technology Madras, Chennai, 600 036, India
| | - Aswathy G
- Department of Physics, Indian Institute of Technology Madras, Chennai, 600 036, India
| | - Sundara Ramaprabhu
- Department of Physics, Indian Institute of Technology Madras, Chennai, 600 036, India.,Alternative Energy and Nanotechnology Laboratory (AENL), Nano Functional Materials Technology Centre (NFMTC), Indian Institute of Technology Madras, Chennai, India
| | - Vishal V R Nandigana
- Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Pramoda K Nayak
- Department of Physics, Indian Institute of Technology Madras, Chennai, 600 036, India.,Micro Nano and Bio-Fluidics Group, Indian Institute of Technology Madras, Chennai, 600036, India.,2D Materials Research and Innovation Group, Indian Institute of Technology Madras, Chennai, 600036, India.,Centre for Nano and Material Sciences, Jain (Deemed-to-be University), Jain Global Campus, Kanakapura, Bangalore, 562112, India
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14
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Dong Y, Zhao Z, Zhao J, Guo Z, Du G, Sun Y, He D, Duan J, Liu J, Yao H. High-Performance Osmotic Power Generators Based on the 1D/2D Hybrid Nanochannel System. ACS APPLIED MATERIALS & INTERFACES 2022; 14:29197-29212. [PMID: 35704847 DOI: 10.1021/acsami.2c05247] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Extracting clean energy by converting the salinity gradient between river and sea into energy is an effective way to reduce the global pollution and carbon emissions. Reverse electrodialysis (RED) is of great importance to realize the energy conversion assisting the ion-selective membrane. However, its higher ion resistance and lower conversion efficiency results in the undesirable power conversion performance. Here, we demonstrate a 1D/2D hybrid nanochannel system to achieve high osmotic energy conversion and output power. This heterogeneous structure is composed of two structures, in which the subnanometer nanochannels in graphene oxide membrane (GOM) can serve as a selective layer and reduce the ion diffusion energy barrier, while the nanochannel in the polymer can introduce asymmetry to enhance ionic rectification and conversion efficiency. This heterogeneous membrane exhibits excellent cation selectivity and enhanced ionic current rectification (ICR) performance. The application of the GOM/PET hybrid nanochannel system in osmotic energy harvesting is evaluated, and the output power can reach up to 118.2 pW with the energy conversion efficiency of 40.3%. Theoretical calculation indicates that the 1D/2D hybrid system can effectively take the advantage of excellent cation selectivity of 2D lamellar nanochannels to improve its RED performance significantly.
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Affiliation(s)
- Yuhua Dong
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou730000, PR China
- Key Laboratory for Magnetism and Magnetic Materials of Ministry of Education, Lanzhou University, Lanzhou730000, PR China
- University of Chinese Academy of Sciences, Beijing100049, PR China
| | - Zhuo Zhao
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou730000, PR China
- University of Chinese Academy of Sciences, Beijing100049, PR China
| | - Jing Zhao
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou730000, PR China
- University of Chinese Academy of Sciences, Beijing100049, PR China
| | - Zaichao Guo
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou730000, PR China
- University of Chinese Academy of Sciences, Beijing100049, PR China
| | - Guanghua Du
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou730000, PR China
- University of Chinese Academy of Sciences, Beijing100049, PR China
| | - Youmei Sun
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou730000, PR China
- University of Chinese Academy of Sciences, Beijing100049, PR China
| | - Deyan He
- Key Laboratory for Magnetism and Magnetic Materials of Ministry of Education, Lanzhou University, Lanzhou730000, PR China
| | - Jinglai Duan
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou730000, PR China
- Advanced Energy Science and Technology Guangdong Laboratory, Huizhou516000, PR China
- University of Chinese Academy of Sciences, Beijing100049, PR China
| | - Jie Liu
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou730000, PR China
- University of Chinese Academy of Sciences, Beijing100049, PR China
| | - Huijun Yao
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou730000, PR China
- Advanced Energy Science and Technology Guangdong Laboratory, Huizhou516000, PR China
- University of Chinese Academy of Sciences, Beijing100049, PR China
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15
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Emmerich T, Vasu KS, Niguès A, Keerthi A, Radha B, Siria A, Bocquet L. Enhanced nanofluidic transport in activated carbon nanoconduits. NATURE MATERIALS 2022; 21:696-702. [PMID: 35422506 DOI: 10.1038/s41563-022-01229-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 03/02/2022] [Indexed: 05/06/2023]
Abstract
Carbon has emerged as a unique material in nanofluidics, with reports of fast water transport, molecular ion separation and efficient osmotic energy conversion. Many of these phenomena still await proper rationalization due to the lack of fundamental understanding of nanoscale ionic transport, which can only be achieved in controlled environments. Here we develop the fabrication of 'activated' two-dimensional carbon nanochannels. Compared with nanoconduits with 'pristine' graphite walls, this enables the investigation of nanoscale ionic transport in great detail. We show that activated carbon nanochannels outperform pristine channels by orders of magnitude in terms of surface electrification, ionic conductance, streaming current and (epi-)osmotic currents. A detailed theoretical framework enables us to attribute the enhanced ionic transport across activated carbon nanochannels to an optimal combination of high surface charge and low friction. Furthermore, this demonstrates the unique potential of activated carbon for energy harvesting from salinity gradients with single-pore power density across activated carbon nanochannels, reaching hundreds of kilowatts per square metre, surpassing alternative nanomaterials.
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Affiliation(s)
- Theo Emmerich
- Laboratoire de Physique de l'Ecole normale Supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université de Paris, Paris, France
| | - Kalangi S Vasu
- Laboratoire de Physique de l'Ecole normale Supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université de Paris, Paris, France
| | - Antoine Niguès
- Laboratoire de Physique de l'Ecole normale Supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université de Paris, Paris, France
| | - Ashok Keerthi
- National Graphene Institute, The University of Manchester, Manchester, UK
- Department of Chemistry, The University of Manchester, Manchester, UK
| | - Boya Radha
- National Graphene Institute, The University of Manchester, Manchester, UK
- Department of Physics and Astronomy, The University of Manchester, Manchester, UK
| | - Alessandro Siria
- Laboratoire de Physique de l'Ecole normale Supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université de Paris, Paris, France.
| | - Lydéric Bocquet
- Laboratoire de Physique de l'Ecole normale Supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université de Paris, Paris, France.
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16
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Yadav SK, Kumar M, Ramaprabhu S, Nandigana VVR, Nayak PK. Design and development of an automated experimental setup for ion transport measurements. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2022; 93:064104. [PMID: 35778037 DOI: 10.1063/5.0086296] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 05/21/2022] [Indexed: 06/15/2023]
Abstract
The ion transport measurements using various ion-exchange membranes (IEMs) face several challenges, including controllability, reproducibility, reliability, and accuracy. This is due to the manual filling of the solutions in two different reservoirs in a typical diffusion cell experiment with a random flow rate, which results in the diffusion through the IEM even before turning on the data acquisition system as reported so far. Here, we report the design and development of an automated experimental setup for ion transport measurements using IEMs. The experimental setup has been calibrated and validated by performing ion transport measurements using a standard nanoporous polycarbonate membrane. We hope that the present work will provide a standard tool for realizing reliable ion transport measurements using ion-exchange membranes and can be extended to study other membranes of various pore densities, shapes, and sizes.
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Affiliation(s)
- Sharad Kumar Yadav
- Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai 600036, India
| | - Mukesh Kumar
- Department of Physics, Indian Institute of Technology Madras, Chennai 600 036, India
| | - Sundara Ramaprabhu
- Department of Physics, Indian Institute of Technology Madras, Chennai 600 036, India
| | - Vishal V R Nandigana
- Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai 600036, India
| | - Pramoda K Nayak
- Department of Physics, Indian Institute of Technology Madras, Chennai 600 036, India
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17
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Laucirica G, Toimil-Molares ME, Trautmann C, Marmisollé W, Azzaroni O. Nanofluidic osmotic power generators - advanced nanoporous membranes and nanochannels for blue energy harvesting. Chem Sci 2021; 12:12874-12910. [PMID: 34745520 PMCID: PMC8513907 DOI: 10.1039/d1sc03581a] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 08/25/2021] [Indexed: 01/10/2023] Open
Abstract
The increase of energy demand added to the concern for environmental pollution linked to energy generation based on the combustion of fossil fuels has motivated the study and development of new sustainable ways for energy harvesting. Among the different alternatives, the opportunity to generate energy by exploiting the osmotic pressure difference between water sources of different salinities has attracted considerable attention. It is well-known that this objective can be accomplished by employing ion-selective dense membranes. However, so far, the current state of this technology has shown limited performance which hinders its real application. In this context, advanced nanostructured membranes (nanoporous membranes) with high ion flux and selectivity enabling the enhancement of the output power are perceived as a promising strategy to overcome the existing barriers in this technology. While the utilization of nanoporous membranes for osmotic power generation is a relatively new field and therefore, its application for large-scale production is still uncertain, there have been major developments at the laboratory scale in recent years that demonstrate its huge potential. In this review, we introduce a comprehensive analysis of the main fundamental concepts behind osmotic energy generation and how the utilization of nanoporous membranes with tailored ion transport can be a key to the development of high-efficiency blue energy harvesting systems. Also, the document discusses experimental issues related to the different ways to fabricate this new generation of membranes and the different experimental set-ups for the energy-conversion measurements. We highlight the importance of optimizing the experimental variables through the detailed analysis of the influence on the energy capability of geometrical features related to the nanoporous membranes, surface charge density, concentration gradient, temperature, building block integration, and others. Finally, we summarize some representative studies in up-scaled membranes and discuss the main challenges and perspectives of this emerging field.
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Affiliation(s)
- Gregorio Laucirica
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, CONICET CC 16 Suc. 4 1900 La Plata Argentina http://softmatter.quimica.unlp.edu.ar www.twitter.com/softmatterlab
| | | | - Christina Trautmann
- GSI Helmholtzzentrum für Schwerionenforschung 64291 Darmstadt Germany
- Technische Universität Darmstadt, Materialwissenschaft 64287 Darmstadt Germany
| | - Waldemar Marmisollé
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, CONICET CC 16 Suc. 4 1900 La Plata Argentina http://softmatter.quimica.unlp.edu.ar www.twitter.com/softmatterlab
| | - Omar Azzaroni
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, CONICET CC 16 Suc. 4 1900 La Plata Argentina http://softmatter.quimica.unlp.edu.ar www.twitter.com/softmatterlab
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18
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Wu Y, Qian Y, Niu B, Chen J, He X, Yang L, Kong XY, Zhao Y, Lin X, Zhou T, Jiang L, Wen L. Surface Charge Regulated Asymmetric Ion Transport in Nanoconfined Space. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2101099. [PMID: 34121315 DOI: 10.1002/smll.202101099] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 03/22/2021] [Indexed: 06/12/2023]
Abstract
The asymmetric ion transport in the nanoconfined space, similar to that of natural ion channels, has attracted broad interest in sensor, energy conversion, and other related fields. Among these systems, the surface charge plays an important role in regulating ion transport behaviors. Herein, this surface charge-regulated asymmetric ion transport behavior is systematically explored in the nanoconfined space and the influence on the performance of nanofluidic energy conversion system. The ion transport behaviors in the nanoconfined space are classified into pure diffusion, electrical double layer, and the polarization controlled state. The asymmetric solution environment or surface charge distribution induces asymmetric ion transport behavior which is largely controlled by the low concentration side. The ion-selectivity and the energy conversion performance can be effectively enhanced by improving the local apparent surface charge (more active sites and higher charge strength) or introducing a selective layer with dense surface charge on the low concentration side. These material design concepts for asymmetric ion transport are further supported by both simulation and experiment. The results provide a significant comprehension for ion behaviors in nanoconfined space and the development of high-performance energy storage and conversion systems.
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Affiliation(s)
- Yadong Wu
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yongchao Qian
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Bo Niu
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Jianjun Chen
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Xiaofeng He
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Linsen Yang
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Xiang-Yu Kong
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Yifei Zhao
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Xiangbin Lin
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Teng Zhou
- College of Mechanical and Electrical Engineering, Hainan University, Haikou, Hainan, 570228, P. R. China
| | - Lei Jiang
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Liping Wen
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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19
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Zhang S, Xia F, Demoustier-Champagne S, Jonas AM. Layer-by-layer assembly in nanochannels: assembly mechanism and applications. NANOSCALE 2021; 13:7471-7497. [PMID: 33870383 DOI: 10.1039/d1nr01113h] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Layer-by-layer (LbL) assembly is a versatile technology to construct multifunctional nanomaterials using various supporting substrates, enabled by the large selection freedom of building materials and diversity of possible driving forces. The fine regulation over the film thickness and structure provides an elegant way to tune the physical/chemical properties by mild assembly conditions (e.g. pH, ion strength). In this review, we focus on LbL in nanochannels, which exhibit a different growth mechanism compared to "open", convex substrates. The assembly mechanism in nanochannels is discussed in detail, followed by the summary of applications of LbL assemblies liberated from nanochannel templates which can be used as nanoreactors, drug carriers and transporting channels across cell membranes. For fluidic applications, robust membrane substrates are required to keep in place nanotube arrays for membrane-based separation, purification, biosensing and energy harvesting, which are also discussed. The good compatibility of LbL with crossover technologies from other fields allows researchers to further extend this technology to a broader range of research fields, which is expected to result in an increased number of applications of LbL technology in the future.
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Affiliation(s)
- Shouwei Zhang
- Faculty of Materials Science and Chemistry, China University of Geosciences, 430074 Wuhan, China
| | - Fan Xia
- Faculty of Materials Science and Chemistry, China University of Geosciences, 430074 Wuhan, China
| | - Sophie Demoustier-Champagne
- Institute of Condensed Matter and Nanosciences - Bio and Soft Matter (IMCN/BSMA), Université catholique de Louvain, Croix du Sud 1/L7.04.02, B1348 Louvain-la-Neuve, Belgium.
| | - Alain M Jonas
- Institute of Condensed Matter and Nanosciences - Bio and Soft Matter (IMCN/BSMA), Université catholique de Louvain, Croix du Sud 1/L7.04.02, B1348 Louvain-la-Neuve, Belgium.
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