Light-Driven Ion Transport in Nanofluidic Devices: Photochemical, Photoelectric, and Photothermal Effects

Xiao, Kai; Schmidt, Oliver G.

doi:10.31635/ccschem.021.202101297

Cited by 29 publications

(28 citation statements)

References 64 publications

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“…[ 96 , 97 , 98 , 99 , 100 ] Furthermore, nanofluidic‐based, light‐driven ion‐transport systems can work based on three different underlying working principles, i.e., photochemical, photoelectric, and photothermal effects, by creating an asymmetric surface charge distribution. [ 101 ] For example, some semiconductor nanostructures can realize the ion‐pumping function directly via ion transport coupled by photoinduced carriers. Xiao et al.…”

Section: Artificial Nanoionicsmentioning

confidence: 99%

“…[96][97][98][99][100] Furthermore, nanofluidicbased, light-driven ion-transport systems can work based on three different underlying working principles, i.e., photochemical, photoelectric, and photothermal effects, by creating an asymmetric surface charge distribution. [101] For example, some semiconductor nanostructures can realize the ion-pumping function directly via ion transport coupled by photoinduced carriers. Xiao et al [80] reported a carbon nitride nanotube membrane that can achieve pumped ion transport against a 5000 concentration gradient by creating a gradient surface charge density with light illumination.…”

Section: Ion Transport Phenomenon In Large Pore Size (2-100 Nm)mentioning

confidence: 99%

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Nanoionics from Biological to Artificial Systems: An Alternative Beyond Nanoelectronics

Zhang

Dai

et al. 2022

Advanced Science

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Ion transport under nanoconfined spaces is a ubiquitous phenomenon in nature and plays an important role in the energy conversion and signal transduction processes of both biological and artificial systems. Unlike the free diffusion in continuum media, anomalous behaviors of ions are often observed in nanostructured systems, which is governed by the complex interplay between various interfacial interactions. Conventionally, nanoionics mainly refers to the study of ion transport in solid‐state nanosystems. In this review, to extent this concept is proposed and a new framework to understand the phenomena, mechanism, methodology, and application associated with ion transport at the nanoscale is put forward. Specifically, here nanoionics is summarized into three categories, i.e., biological, artificial, and hybrid, and discussed the characteristics of each system. Compared with nanoelectronics, nanoionics is an emerging research field with many theoretical and practical challenges. With this forward‐looking perspective, it is hoped that nanoionics can attract increasing attention and find wide range of applications as nanoelectronics.

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Section: Artificial Nanoionicsmentioning

confidence: 99%

Section: Ion Transport Phenomenon In Large Pore Size (2-100 Nm)mentioning

confidence: 99%

Nanoionics from Biological to Artificial Systems: An Alternative Beyond Nanoelectronics

Zhang

Dai

et al. 2022

Advanced Science

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“…The consequent asymmetric charge distribution along the nanochannel generates a potential gradient that drives charged ion transport against their concentration gradient. This photoelectric effect only occurs when the bandgap of photoinduced carriers is insufficient to split water (1.23 V) or drive the chemical reaction, and the reversed ion transport highly depends on the directional carriers’ movement . On the basis of this mechanism, Xiao et al reported a light-driven ion pump made from carbon nitride nanotube (CNN) with an inner diameter of ∼30 nm (Figure d).…”

Section: Light-driven Ion Pumpsmentioning

confidence: 99%

“…This photoelectric effect only occurs when the bandgap of photoinduced carriers is insufficient to split water (1.23 V) or drive the chemical reaction, and the reversed ion transport highly depends on the directional carriers' movement. 72 On the basis of this mechanism, Xiao et al 73 reported a light-driven ion pump made from carbon nitride nanotube (CNN) with an inner diameter of ∼30 nm (Figure 5d). Because of the light-induced separation of electrons and holes in the CNN, the surface charge would be redistributed under the illumination.…”

Section: Light-driven Ion Pumpsmentioning

confidence: 99%

Bioinspired Artificial Ion Pumps

2022

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Ion pumps are important membrane-spanning transporters that pump ions against the electrochemical gradient across the cell membrane. In biological systems, ion pumping is essential to maintain intracellular osmotic pressure, to respond to external stimuli, and to regulate physiological activities by consuming adenosine triphosphate. In recent decades, artificial ion pumping systems with diverse geometric structures and functions have been developing rapidly with the progress of advanced materials and nanotechnology. In this Review, bioinspired artificial ion pumps, including four categories: asymmetric structure-driven ion pumps, pH gradient-driven ion pumps, light-driven ion pumps, and electron-driven ion pumps, are summarized. The working mechanisms, functions, and applications of those artificial ion pumping systems are discussed. Finally, a brief conclusion of underpinning challenges and outlook for future research are tentatively discussed.

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“…With the rapid development of nanotechnology, various functional solid‐state nanofluidic devices responding to diverse external stimuli including physical and chemical ones such as light, [65–67] temperature, [68,69] voltage, [70,71] magnetism, [72] pH, [73,74] ions [75] and molecules, [76] have been fabricated with different kinds of materials to selectively regulate mass transport [14] . In particular, the photo‐responsive solid‐state nanopores/nanochannels have attracted a wide range of attention from multidisciplinary fields due to their unique superiority over other external stimuli.…”

Section: Introductionmentioning

confidence: 99%

Light‐Controlled Ionic/Molecular Transport through Solid‐State Nanopores and Nanochannels

Jiang

et al. 2022

Chemistry An Asian Journal

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Biological nanochannels perfectly operate in organisms and exquisitely control mass transmembrane transport for complex life process. Inspired by biological nanochannels, plenty of intelligent artificial solid‐state nanopores and nanochannels are constructed based on various materials and methods with the development of nanotechnology. Specially, the light‐controlled nanopores/nanochannels have attracted much attention due to the unique advantages in terms of that ion and molecular transport can be regulated remotely, spatially and temporally. According to the structure and function of biological ion channels, light‐controlled solid‐state nanopores/nanochannels can be divided into light‐regulated ion channels with ion gating and ion rectification functions, and light‐driven ion pumps with active ion transport property. In this review, we present a systematic overview of light‐controlled ion channels and ion pumps according to the photo‐responsive components in the system. Then, the related applications of solid‐state nanopores/nanochannels for molecular sensing, water purification and energy conversion are discussed. Finally, a brief conclusion and short outlook are offered for future development of the nanopore/nanochannel field.

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Light-Driven Ion Transport in Nanofluidic Devices: Photochemical, Photoelectric, and Photothermal Effects

Cited by 29 publications

References 64 publications

Nanoionics from Biological to Artificial Systems: An Alternative Beyond Nanoelectronics

Nanoionics from Biological to Artificial Systems: An Alternative Beyond Nanoelectronics

Bioinspired Artificial Ion Pumps

Light‐Controlled Ionic/Molecular Transport through Solid‐State Nanopores and Nanochannels

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