Ion/Molecule Transportation in Nanopores and Nanochannels: From Critical Principles to Diverse Functions

Zhu, Zhongpeng; Wang, Dianyu; Tian, Ye; Jiang, Lei

doi:10.1021/jacs.9b00086

Cited by 290 publications

(268 citation statements)

References 150 publications

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“…Tw o-dimensional (2D) laminated membranes with atomlevel sieving ability, [7] such as graphene films, [8] have attracted tremendous interest in separation and purification fields. Such membranes exhibit high permeance and good rejection in organic solvent nanofiltration [9] and ion sieving.…”

Section: Introductionmentioning

confidence: 99%

Antibiotics Separation with MXene Membranes Based on Regularly Stacked High‐Aspect‐Ratio Nanosheets

et al. 2020

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The uncontrolled release of antibiotics and pharmaceuticals into the environment is aw orldwide increasing problem. Thus,h ighly efficient treatment technologies for wastewater are urgently needed. In this work, seven kinds of typical antibiotics (including water and alcohol soluble ones) are successfully separated from the corresponding aqueous and ethanolic solutions using highly regular laminated membranes. Our membranes are assembled with 2-4 mmt itanium carbide nanosheets.T he solvent permeance through such titanium carbide membrane is one order of magnitude higher than that through most polymeric nanofiltration membranes with similar antibiotics rejection. This high flux is due to the regular two-dimensional (2D) structure resulting from the large aspect ratio of titanium carbide nanosheets.M oreover,t he electrostatic interaction between the surface terminations and the antibiotics also affects the rejection and enhances the antifouling property.S uch2 Dt itanium carbide membranes further broaden the application scope of laminated materials for separation and purification of high value added drugs in academia and industry.

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Section: Introductionmentioning

confidence: 99%

Antibiotics Separation with MXene Membranes Based on Regularly Stacked High‐Aspect‐Ratio Nanosheets

et al. 2020

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“…A streaming current and streaming potential, which occurs when an ionic solution is driven by a pressure gradient through a channel or porous plug with charged walls, are two interrelated phenomena in the study of electrokinetic energy conversion . The electrolyte solution in the micro‐/nanochannels is usually driven by an external pump or concentration difference . The streaming current and streaming potential are relevant to the concentration and flow rate of the electrolyte solution, and properties of the charged micro‐/nanochannels, such as dimensions of the channels, charge density of the surfaces.…”

Section: Applicationsmentioning

confidence: 99%

“…[106][107][108] The electrolyte solution in the micro-/nanochannels is usually driven by an external pump or concentration difference. [109,110] The streaming current and streaming potential are relevant to the concentration and flow rate of the electrolyte solution, and properties of the charged micro-/nanochannels, such as dimensions of the channels, charge density of the surfaces. Zhou and co-workers developed a microfluidics nanogenerator that converts environmental mechanical energy into electrical energy.…”

Section: Othersmentioning

confidence: 99%

Inner Surface Design of Functional Microchannels for Microscale Flow Control

Wang

Yang

et al. 2019

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Fluidic flow behaviors in microfluidics are dominated by the interfaces created between the fluids and the inner surface walls of microchannels. Microchannel inner surface designs, including the surface chemical modification, and the construction of micro‐/nanostructures, are good examples of manipulating those interfaces between liquids and surfaces through tuning the chemical and physical properties of the inner walls of the microchannel. Therefore, the microchannel inner surface design plays critical roles in regulating microflows to enhance the capabilities of microfluidic systems for various applications. Most recently, the rapid progresses in micro‐/nanofabrication technologies and fundamental materials have also made it possible to integrate increasingly complex chemical and physical surface modification strategies with the preparation of microchannels in microfluidics. Besides, a wave of researches focusing on the ideas of using liquids as dynamic surface materials is identified, and the unique characteristics endowed with liquid–liquid interfaces have revealed that the interesting phenomena can extend the scope of interfacial interactions determining microflow behaviors. This review extensively discusses the microchannel inner surface designs for microflow control, especially evaluates them from the perspectives of the interfaces resulting from the inner surface designs. In addition, prospective opportunities for the development of surface designs of microchannels, and their applications are provided with the potential to attract scientific interest in areas related to the rapid development and applications of various microchannel systems.

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“…Consequently, any interaction of the permeant molecules with the lining of the pores will determine the functional properties of the permeation process [1][2][3][4] . In biological membranes, ion channels are structurally dynamic protein nanopores that switch between functionally open and closed conformations to control the rapid permeation of ions and water across the membrane [5][6] . However, when open, a typical channel pore has an internal radius of~0.5 nm and a length of~5 nm that creates a nano-confined environment where the precise shape and related dynamic physicochemical properties of the pore will also influence the complex behaviour of water and of ions, and therefore their permeation across the membrane.…”

Section: Introductionmentioning

confidence: 99%

Electric Field Induced Wetting of a Hydrophobic Gate in a Model Nanopore Based on the 5-HT₃Receptor Channel

Klesse

Tucker

Sansom

2020

Preprint

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In this study we examined the influence of a transmembrane voltage on the hydrophobic gating of nanopores using molecular dynamics simulations. We observed electric field induced wetting of a hydrophobic gate in a biologically inspired model nanopore based on the 5-HT3 receptor in its closed state, with a field of at least ∼100 mV nm −1 was required to hydrate the pore. We also found an unequal distribution of charged residues can generate an electric field intrinsic to the nanopore which, depending on its orientation, can alter the effect of the external field, thus making the wetting response asymmetric. This wetting response could be described by a simple model based on water surface tension, the volumetric energy contribution of the electric field, and the influence of charged amino acids lining the pore. Finally, the electric field response was used to determine time constants characterising the phase transitions of water confined within the nanopore, revealing liquid-vapour oscillations on a time scale of~5 ns. This time scale was largely independent of the water model employed and was similar for different sized pores representative of the open and closed states of the pore. Furthermore, our finding that the threshold voltage required for hydrating a hydrophobic gate depends on the orientation of the electric field provides an attractive perspective for the design of rectifying artificial nanopores. ToC/Abstract Graphic

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Ion/Molecule Transportation in Nanopores and Nanochannels: From Critical Principles to Diverse Functions

Cited by 290 publications

References 150 publications

Antibiotics Separation with MXene Membranes Based on Regularly Stacked High‐Aspect‐Ratio Nanosheets

Antibiotics Separation with MXene Membranes Based on Regularly Stacked High‐Aspect‐Ratio Nanosheets

Inner Surface Design of Functional Microchannels for Microscale Flow Control

Electric Field Induced Wetting of a Hydrophobic Gate in a Model Nanopore Based on the 5-HT₃Receptor Channel

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Ion/Molecule Transportation in Nanopores and Nanochannels: From Critical Principles to Diverse Functions

Cited by 290 publications

References 150 publications

Antibiotics Separation with MXene Membranes Based on Regularly Stacked High‐Aspect‐Ratio Nanosheets

Antibiotics Separation with MXene Membranes Based on Regularly Stacked High‐Aspect‐Ratio Nanosheets

Inner Surface Design of Functional Microchannels for Microscale Flow Control

Electric Field Induced Wetting of a Hydrophobic Gate in a Model Nanopore Based on the 5-HT3Receptor Channel

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Product

Resources

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Electric Field Induced Wetting of a Hydrophobic Gate in a Model Nanopore Based on the 5-HT₃Receptor Channel