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

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Junchao Lao
  • Ruijing Lv
  • Aoxuan Wang
  • Jinsong Wu
  • Jiayan Luo

Detail(s)

Original languageEnglish
Pages (from-to)12464-12471
Journal / PublicationACS Nano
Volume12
Issue number12
Publication statusPublished - 26 Dec 2018
Externally publishedYes

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.

Research Area(s)

  • aqueous stability, MXene, nanofluidic, photocontrolled, surface charge

Bibliographic Note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to lbscholars@cityu.edu.hk.

Citation Format(s)

Aqueous Stable Ti 3 C 2 MXene Membrane with Fast and Photoswitchable Nanofluidic Transport. / Lao, Junchao; Lv, Ruijing; Gao, Jun; Wang, Aoxuan; Wu, Jinsong; Luo, Jiayan.

In: ACS Nano, Vol. 12, No. 12, 26.12.2018, p. 12464-12471.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review