Blue energy generation by the temperature-dependent properties in funnel-shaped soft nanochannels

Karimzadeh, Mohammad; Khatibi, Mahdi; Ashrafizadeh, Seyed Nezameddin; Mondal, Pranab Kumar

doi:10.1039/d2cp01015a

Cited by 37 publications

(40 citation statements)

References 81 publications

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Section: Transport Equationsmentioning

confidence: 99%

“…Thus, for the sake of simplicity and primarily to capture the underlying physics behind pH gradient, we have neglected any nonlinear effects such as finite ion size, a dielectric decrease, and temperature-dependent parameters. 31–33 The conservation of ionic species follows the Nernst-Planck equation, which, in a steady-state can be expressed asHere, c i , N i , z i , D i respectively, represent the concentration, flux, valence, and diffusivities of i th, i = 1, 2, 3, and 4 ionic species, respectively, and R , F , and T are the universal gas constant, Faraday constant, and absolute temperature, respectively. The electric potential ϕ is governed by the local space charge density of the electrolyte solution and it follows the Poisson equation:where, j is a binary variable, value of which is either 1 or 0 depending upon the region within the PEL or outside the PEL, respectively.…”

Section: Mathematical Modelingmentioning

confidence: 99%

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Chemiosomotic flow in a soft conical nanopore: harvesting enhanced blue energy

Pandey

Mondal

2023

Soft Matter

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Section: Transport Equationsmentioning

confidence: 99%

Section: Mathematical Modelingmentioning

confidence: 99%

Chemiosomotic flow in a soft conical nanopore: harvesting enhanced blue energy

Pandey

Mondal

2023

Soft Matter

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“…It is found that each of these shapes leads to the optimization of one of the key indicators. Another major research interest in this area is assessing the effect of soft micro/nanoconduits, and how such systems can play a key role in salinity energy generation (SEG) and energy harvesting [11][12][13]. The system considered was a polyelectrolyte layer (PEL) grafted nanofluidic confinement, and it was revealed that augmentation in the temperature and concentration ratios leads to increase in the SEG.…”

Section: Introductionmentioning

confidence: 99%

Combined electroosmotic and pressure‐driven transport of neutral solutes across a rough, porous‐walled microtube

et al. 2023

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A number of microfluidic systems of interest essentially consist of micro‐scaled channels/tubes, whose walls are inherently rough. The novelty of the current study lies in exploring the impact of the wall roughness on mass transfer in the case of flow through a microtube with porous wall. The current investigation is possibly the first attempt at exploring the effect of mass transfer for a porous‐walled, rough microtube, as earlier studies were limited to the analysis of hydrodynamic and thermal effects only in an impervious microtube. In particular, the effects of the corrugation amplitude and the wavenumber on the mass transport have been assessed in detail in this work, via a combination of perturbation approximations and numerical analysis. Several interesting revelations are elicited regarding the effects of these pertinent parameters on the mass transfer coefficient, permeation flux, wall surface concentration, and delivery flux of the neutral solute. It has been unveiled that it is possible to enhance the solute mass flux by 10% via appropriate tuning of corrugation amplitude. The findings of the study can help in better understanding of mass transport for a porous‐walled, rough microtube, which has critical relevance in several important applications such as micromixers, targeted drug delivery, and so on.

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“…In recent years, lab-on-a-chip (LOC) and lab-on-a-disk (LOD) have attracted considerable interest . The development of microchips and nanochips will allow science to do its needed tasks with greater precision, speed, and economy. − In contrast, the development and modification of nanochannel structures to create blue energy, , purification of fluids, biosensors, , ion diodes, , ion sensors, − and smart ion gates have been significantly advanced during the past decade. , …”

Section: Introductionmentioning

confidence: 99%

Enhanced Ionic Current Rectification through Innovative Integration of Polyelectrolyte Bilayers and Charged-Wall Smart Nanochannels

2022

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The tools utilized by humans continue to shrink and speed up. Lab-on-a-chip (LOC) is one of the most recent techniques for decreasing the size of chemical systems. Today, LOCs have made substantial strides in developing nanomaterial fabrication techniques. Controlling and regulating the fluid and ion mobility in these systems is crucial. Layer-by-layer (LBL) soft layers are one of the most effective strategies for controlling fluid flow in channels. In light of the present constraints for developing these systems and the high expense of experimental investigations, it is vital to employ modeling to minimize costs and comprehend their underlying ideas and operations. In this study, we examined the influence of the LBL soft layer's presence in the charged nanochannels on the ion transport parameters. To examine the effect of the coating length of the LBL soft layer, we first examined three lengths of coating: one with a length greater than half (type (I)), one with a length equal to half (type (II)), and one with a length less than half (type (III)) of the nanochannel length. Then, by solving Poisson−Nernst−Planck and Navier−Stokes equations, we determined the influences of pH, soft layer charge density (N PEL /N A ), bulk concentration (C 0 ), and hard surface charge density (σ) on the ionic current rectification (R f ) and selectivity (S) of the nanochannel. The maximum rectification of 30.65 was achieved using a nanochannel of type (III) and σ = +10 mC/m 2 . The current results demonstrate a promising hybrid architecture consisting of an LBL soft layer and a smart charged nanochannel for enhanced rectification.

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Blue energy generation by the temperature-dependent properties in funnel-shaped soft nanochannels

Abstract: Salinity energy generation (SEG) studies have only been done under isothermal conditions at ambient temperature. The production of salinity energy can be improved under non-isothermal conditions, albeit preserving the energy...

Cited by 37 publications

References 81 publications

Chemiosomotic flow in a soft conical nanopore: harvesting enhanced blue energy

Chemiosomotic flow in a soft conical nanopore: harvesting enhanced blue energy

Combined electroosmotic and pressure‐driven transport of neutral solutes across a rough, porous‐walled microtube

Enhanced Ionic Current Rectification through Innovative Integration of Polyelectrolyte Bilayers and Charged-Wall Smart Nanochannels

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