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Nano Research 2022, 15(2): 1238-1245 https://doi.org/10.1007/s12274-021-3631-5
Research Article | Issue | Published: 13 July 2021

Volcanic relationship between wettability of the interface and water migration rate in solar steam generation systems

Show Author's Information Qiang Fu1,§,  Xiaojuan Li3,§,  Ning Ma2( ),  Dier Shi1,  Pohua Chen1,  Junliang Sun1( )
College of Chemistry and Molecular Engineering Peking University Beijing National Laboratory for Molecular Sciences (BNLMS)Beijing 100871 China
Hubei Key Laboratory of Polymer Materials Key Laboratory for the Green Preparation and Application of Functional Materials (Ministry of Education) Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials School of Materials Science and Engineering Hubei UniversityWuhan 430062 China
College of Physics Sichuan UniversityChengdu 610065 China

§ Qiang Fu and Xiaojuan Li contributed equally to this work.

Keywords:
computational modeling, wettability, solar water steam generation, surface interface reaction, volcanic relationship
Topics:
Computational fluid dynamics
Cite this article:
Fu Q, Li X, Ma N, et al. Volcanic relationship between wettability of the interface and water migration rate in solar steam generation systems. Nano Research, 2022, 15(2): 1238-1245. https://doi.org/10.1007/s12274-021-3631-5
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Abstract Full text Electronic supplementary material About this article

Capturing solar energy as heat for water treatment has become a substantial approach to obtain freshwater. To obtain higher performance, the understanding of the mechanism of how water molecules interact with the interface is particularly fundamental, because the migration process of water molecules on the evaporation interface will directly affect the performance of the device. Herein we regulate the number of hydroxyl groups on the surface of reduced graphene oxide quantitatively, to study the effect of different wettability of interfaces on the performance of solar water generators. The water evaporation performance displays a volcanic shape as increasing wettability. Calculated by the computational chemistry method, deviation from proper wetting humidity is not conducive to the migration of water molecules from the surface. The double-edged sword effect of wettability on performances is clarified, and the surface energy density is the key to break through the limit by the finite element method.


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Electronic supplementary material
About this article

Volcanic relationship between wettability of the interface and water migration rate in solar steam generation systems

Show Author's information Qiang Fu1,§, Xiaojuan Li3,§, Ning Ma2( ), Dier Shi1, Pohua Chen1, Junliang Sun1( )
College of Chemistry and Molecular Engineering Peking University Beijing National Laboratory for Molecular Sciences (BNLMS)Beijing 100871 China
Hubei Key Laboratory of Polymer Materials Key Laboratory for the Green Preparation and Application of Functional Materials (Ministry of Education) Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials School of Materials Science and Engineering Hubei UniversityWuhan 430062 China
College of Physics Sichuan UniversityChengdu 610065 China

§ Qiang Fu and Xiaojuan Li contributed equally to this work.

Abstract

Capturing solar energy as heat for water treatment has become a substantial approach to obtain freshwater. To obtain higher performance, the understanding of the mechanism of how water molecules interact with the interface is particularly fundamental, because the migration process of water molecules on the evaporation interface will directly affect the performance of the device. Herein we regulate the number of hydroxyl groups on the surface of reduced graphene oxide quantitatively, to study the effect of different wettability of interfaces on the performance of solar water generators. The water evaporation performance displays a volcanic shape as increasing wettability. Calculated by the computational chemistry method, deviation from proper wetting humidity is not conducive to the migration of water molecules from the surface. The double-edged sword effect of wettability on performances is clarified, and the surface energy density is the key to break through the limit by the finite element method.

Keywords: computational modeling, wettability, solar water steam generation, surface interface reaction, volcanic relationship

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Acknowledgements

Publication history

Received: 24 March 2021
Revised: 26 May 2021
Accepted: 30 May 2021
Published: 13 July 2021
Issue date: February 2022

Copyright

© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2021

Acknowledgements

Acknowledgements

We acknowledge funding from the National Natural Science Foundation of China (Nos. 21871009 and 21527803), the Youth Science Foundation of Hubei University (No. 202011303000002) and China Postdoctoral Science Foundation (No. 2018M641064).

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