Aqueous Stable Ti                         3                         C                         2                          MXene Membrane with Fast and Photoswitchable Nanofluidic Transport

Junchao Lao; Ruijing Lv; Jun Gao; Aoxuan Wang; Jinsong Wu; Jiayan Luo

doi:10.1021/acsnano.8b06708

Aqueous Stable Ti ₃ C ₂ MXene Membrane with Fast and Photoswitchable Nanofluidic Transport

Junchao Lao, Ruijing Lv, Jun Gao^*, Aoxuan Wang, Jinsong Wu, Jiayan Luo

^*Corresponding author for this work

Physics of Complex Fluids

Research output: Contribution to journal › Article › Academic › peer-review

183 Citations (Scopus)

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Abstract

High, stable, and modulatable ionic conductivity is important for many nanofluidic applications of layered two-dimensional (2D) membranes. In this study, we demonstrate a proton and ionic conductivity of the Ti ₃ C ₂ T _x membrane that is orders of magnitude higher than that of bulk solution at low concentrations. Importantly, the membrane is highly stable in aqueous solution without any modification, due to the strong and attractive interlayer van der Waals interaction and weak electrostatic repulsive interaction. Furthermore, by exploiting the intrinsic photothermal property of MXene, we demonstrate that the ionic conductivity can be reversely, rapidly, and completely switched on or off with laser light. This study should prove MXene membrane as a suitable platform to study and utilize nanofluidic ion transport. It should also inspire future studies to manipulate the mass transport through 2D membranes using their inherent physicochemical properties.

Original language	English
Pages (from-to)	12464-12471
Number of pages	8
Journal	ACS nano
Volume	12
Issue number	12
DOIs	https://doi.org/10.1021/acsnano.8b06708
Publication status	Published - 26 Dec 2018

Keywords

Aqueous stability
MXene
Nanofluidic
Photocontrolled
Surface charge
n/a OA procedure

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10.1021/acsnano.8b06708

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title = "Aqueous Stable Ti 3 C 2 MXene Membrane with Fast and Photoswitchable Nanofluidic Transport",

abstract = " High, stable, and modulatable ionic conductivity is important for many nanofluidic applications of layered two-dimensional (2D) membranes. In this study, we demonstrate a proton and ionic conductivity of the Ti 3 C 2 T x membrane that is orders of magnitude higher than that of bulk solution at low concentrations. Importantly, the membrane is highly stable in aqueous solution without any modification, due to the strong and attractive interlayer van der Waals interaction and weak electrostatic repulsive interaction. Furthermore, by exploiting the intrinsic photothermal property of MXene, we demonstrate that the ionic conductivity can be reversely, rapidly, and completely switched on or off with laser light. This study should prove MXene membrane as a suitable platform to study and utilize nanofluidic ion transport. It should also inspire future studies to manipulate the mass transport through 2D membranes using their inherent physicochemical properties. ",

keywords = "Aqueous stability, MXene, Nanofluidic, Photocontrolled, Surface charge, n/a OA procedure",

author = "Junchao Lao and Ruijing Lv and Jun Gao and Aoxuan Wang and Jinsong Wu and Jiayan Luo",

note = "Funding Information: The authors appreciate support from National Natural Science Foundation of China (Grant Nos. 51872196, U1601206, and 51502197) Natural Science Foundation of Tianjin, China (Grant Nos. 17JCJQJC44100 and 15JCYBJC53100), and the 111 Project of B12015. Funding Information: The authors appreciate support from National Natural Science Foundation of China (Grant Nos. 51872196, U1601206, and 51502197), Natural Science Foundation of Tianjin, China (Grant Nos. 17JCJQJC44100 and 15JCYBJC53100), and the 111 Project of B12015. Publisher Copyright: {\textcopyright} 2018 American Chemical Society.",

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doi = "10.1021/acsnano.8b06708",

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Aqueous Stable Ti ₃ C ₂ MXene Membrane with Fast and Photoswitchable Nanofluidic Transport. / Lao, Junchao; Lv, Ruijing; Gao, Jun et al.
In: ACS nano, Vol. 12, No. 12, 26.12.2018, p. 12464-12471.

Research output: Contribution to journal › Article › Academic › peer-review

TY - JOUR

T1 - Aqueous Stable Ti 3 C 2 MXene Membrane with Fast and Photoswitchable Nanofluidic Transport

AU - Lao, Junchao

AU - Lv, Ruijing

AU - Gao, Jun

AU - Wang, Aoxuan

AU - Wu, Jinsong

AU - Luo, Jiayan

N1 - Funding Information: The authors appreciate support from National Natural Science Foundation of China (Grant Nos. 51872196, U1601206, and 51502197) Natural Science Foundation of Tianjin, China (Grant Nos. 17JCJQJC44100 and 15JCYBJC53100), and the 111 Project of B12015. Funding Information: The authors appreciate support from National Natural Science Foundation of China (Grant Nos. 51872196, U1601206, and 51502197), Natural Science Foundation of Tianjin, China (Grant Nos. 17JCJQJC44100 and 15JCYBJC53100), and the 111 Project of B12015. Publisher Copyright: © 2018 American Chemical Society.

PY - 2018/12/26

Y1 - 2018/12/26

N2 - High, stable, and modulatable ionic conductivity is important for many nanofluidic applications of layered two-dimensional (2D) membranes. In this study, we demonstrate a proton and ionic conductivity of the Ti 3 C 2 T x membrane that is orders of magnitude higher than that of bulk solution at low concentrations. Importantly, the membrane is highly stable in aqueous solution without any modification, due to the strong and attractive interlayer van der Waals interaction and weak electrostatic repulsive interaction. Furthermore, by exploiting the intrinsic photothermal property of MXene, we demonstrate that the ionic conductivity can be reversely, rapidly, and completely switched on or off with laser light. This study should prove MXene membrane as a suitable platform to study and utilize nanofluidic ion transport. It should also inspire future studies to manipulate the mass transport through 2D membranes using their inherent physicochemical properties.

AB - High, stable, and modulatable ionic conductivity is important for many nanofluidic applications of layered two-dimensional (2D) membranes. In this study, we demonstrate a proton and ionic conductivity of the Ti 3 C 2 T x membrane that is orders of magnitude higher than that of bulk solution at low concentrations. Importantly, the membrane is highly stable in aqueous solution without any modification, due to the strong and attractive interlayer van der Waals interaction and weak electrostatic repulsive interaction. Furthermore, by exploiting the intrinsic photothermal property of MXene, we demonstrate that the ionic conductivity can be reversely, rapidly, and completely switched on or off with laser light. This study should prove MXene membrane as a suitable platform to study and utilize nanofluidic ion transport. It should also inspire future studies to manipulate the mass transport through 2D membranes using their inherent physicochemical properties.

KW - Aqueous stability

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KW - Surface charge

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Aqueous Stable Ti ₃ C ₂ MXene Membrane with Fast and Photoswitchable Nanofluidic Transport

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