Journal article
Photothermoelectric Response of Ti3C2Tx MXene Confined Ion Channels
ACS nano, v 14(7), pp 9042-9049
28 Jul 2020
PMID: 32538614
Abstract
With recent growing interest in biomimetic smart nanochannels, a biological sensory transduction in response to external stimuli has been of particular interest in the development of biomimetic nanofluidic systems. Here we demonstrate the MXene-based subnanometer ion channels that convert external temperature changes to electric signals via preferential diffusion of cations under a thermal gradient. In particular, coupled with a photothermal conversion feature of MXenes, an array of the nanoconfined Ti3C2TX ion channels can capture trans-nanochannel diffusion potentials under a light-driven axial temperature gradient. The nonisothermal opencircuit potential across channels is enhanced with increasing cationic permselectivity of confined channels, associated with the ionic concentration or pH of permeant fluids. The photothermoelectric ionic response (evaluated from the ionic Seebeck coefficient) reached up to 1 mV.K-1, which is comparable to biological thermosensory channels, and demonstrated stability and reproducibility in the absence and presence of an ionic concentration gradient. With advantages of physicochemical tunability and easy fabrication process, the lamellar ion conductors may be an important nanofluidic thermosensation platform possibly for biomimetic sensory systems.
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Details
- Title
- Photothermoelectric Response of Ti3C2Tx MXene Confined Ion Channels
- Creators
- Seunghyun Hong - King Abdullah Univ Sci & Technol, Div Biol & Environm Sci & Engn, Water Desalinat & Reuse Ctr, Thuwal 239556900, Saudi ArabiaGuodong Zou - King Abdullah Univ Sci & Technol, Phys Sci & Engn Div, Mat Sci & Engn, Thuwal 239556900, Saudi ArabiaHyunho Kim - King Abdullah University of Science and TechnologyDazhen Huang - King Abdullah University of Science and TechnologyPeng Wang - King Abdullah University of Science and TechnologyHusam N. Alshareef - King Abdullah University of Science and Technology
- Publication Details
- ACS nano, v 14(7), pp 9042-9049
- Publisher
- Amer Chemical Soc
- Number of pages
- 8
- Grant note
- King Abdullah University of Science and Technology (KAUST); King Abdullah University of Science & Technology
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000557762800124
- Scopus ID
- 2-s2.0-85089710413
- Other Identifier
- 991022059816704721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Multidisciplinary
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology