ItemArticle

pH-dependent water permeability switching and its memory in MoS2 membranes

Title
pH-dependent water permeability switching and its memory in MoS2 membranes
Creator
Hu C.Y.; Achari A.; Rowe P.; Xiao H.; Suran S.; Li Z.; Huang K.; Chi C.; Cherian C.T.; Sreepal V.; Bentley P.D.; Pratt A.; Zhang N.; Novoselov K.S.; Michaelides A.; Nair R.R.
Description
Intelligent transport of molecular species across different barriers is critical for various biological functions and is achieved through the unique properties of biological membranes14. Two essential features of intelligent transport are the ability to (1) adapt to different external and internal conditions and (2) memorize the previous state5. In biological systems, the most common form of such intelligence is expressed as hysteresis6. Despite numerous advances made over previous decades on smart membranes, it remains a challenge to create a synthetic membrane with stable hysteretic behaviour for molecular transport711. Here we demonstrate the memory effects and stimuli-regulated transport of molecules through an intelligent, phase-changing MoS2 membrane in response to external pH. We show that water and ion permeation through 1T? MoS2 membranes follows a pH-dependent hysteresis with a permeation rate that switches by a few orders of magnitude. We establish that this phenomenon is unique to the 1T? phase of MoS2, due to the presence of surface charge and exchangeable ions on the surface. We further demonstrate the potential application of this phenomenon in autonomous wound infection monitoring and pH-dependent nanofiltration. Our work deepens understanding of the mechanism of water transport at the nanoscale and opens an avenue for the development of intelligent membranes. 2023, The Author(s), under exclusive licence to Springer Nature Limited.
Source
Nature, Vol-616, No. 7958, pp. 719-723.
Date
2023-01-01
Publisher
Nature Research
Coverage
Hu C.Y., National Graphene Institute, University of Manchester, Manchester, United Kingdom, Department of Chemical Engineering, University of Manchester, Manchester, United Kingdom, Department of Physics and Astronomy, University of Manchester, Manchester, United Kingdom, College of Chemistry and Chemical Engineering, iChEM, Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen University, Xiamen, China; Achari A., National Graphene Institute, University of Manchester, Manchester, United Kingdom, Department of Chemical Engineering, University of Manchester, Manchester, United Kingdom; Rowe P., Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, United Kingdom; Xiao H., National Graphene Institute, University of Manchester, Manchester, United Kingdom, Department of Chemical Engineering, University of Manchester, Manchester, United Kingdom; Suran S., National Graphene Institute, University of Manchester, Manchester, United Kingdom, Department of Chemical Engineering, University of Manchester, Manchester, United Kingdom; Li Z., School of Chemical Engineering, Dalian University of Technology, Panjin, China; Huang K., National Graphene Institute, University of Manchester, Manchester, United Kingdom, Department of Chemical Engineering, University of Manchester, Manchester, United Kingdom; Chi C., National Graphene Institute, University of Manchester, Manchester, United Kingdom, Department of Chemical Engineering, University of Manchester, Manchester, United Kingdom; Cherian C.T., National Graphene Institute, University of Manchester, Manchester, United Kingdom, Department of Chemical Engineering, University of Manchester, Manchester, United Kingdom, Department of Physics and Electronics, Christ University, Bangalore, India; Sreepal V., National Graphene Institute, University of Manchester, Manchester, United Kingdom, Department of Chemical Engineering, University of Manchester, Manchester, United Kingdom; Bentley P.D., School of Physics, Engineering and Technology, University of York, York, United Kingdom; Pratt A., School of Physics, Engineering and Technology, University of York, York, United Kingdom; Zhang N., National Graphene Institute, University of Manchester, Manchester, United Kingdom, Department of Chemical Engineering, University of Manchester, Manchester, United Kingdom, School of Chemical Engineering, Dalian University of Technology, Panjin, China; Novoselov K.S., Department of Physics and Astronomy, University of Manchester, Manchester, United Kingdom, Institute for Functional Intelligent Materials, National University of Singapore, Singapore, Singapore; Michaelides A., Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, United Kingdom; Nair R.R., National Graphene Institute, University of Manchester, Manchester, United Kingdom, Department of Chemical Engineering, University of Manchester, Manchester, United Kingdom
Rights
Restricted Access
Relation
ISSN: 280836; PubMed ID: 37076621; CODEN: NATUA
Format
Online
Language
English
Type
Article

Collection

Articles

Citation

Hu C.Y.; Achari A.; Rowe P.; Xiao H.; Suran S.; Li Z.; Huang K.; Chi C.; Cherian C.T.; Sreepal V.; Bentley P.D.; Pratt A.; Zhang N.; Novoselov K.S.; Michaelides A.; Nair R.R., “pH-dependent water permeability switching and its memory in MoS2 membranes,” CHRIST (Deemed To Be University) Institutional Repository, accessed February 25, 2025, https://archives.christuniversity.in/items/show/14310.

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