ID | 69366 |
フルテキストURL |
suppl.docx
2.19 MB
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著者 |
Chen, Hongzhe
School of Materials Science and Engineering, University of New South Wales Sydney
Lin, Tongxi
School of Materials Science and Engineering, University of New South Wales Sydney
Ramadhan, Zeno Rizqi
Electron Microscope Unit, University of New South Wales
Rawal, Aditya
Mark Wainwright Analytical Centre, University of New South Wales
Nishina, Yuta
Research Institute for Interdisciplinary Science, Okayama University
ORCID
Kaken ID
publons
researchmap
Karton, Amir
School of Science and Technology, University of New England
Ren, Xiaojun
School of Materials Science and Engineering, University of New South Wales Sydney
Joshi, Rakesh
School of Materials Science and Engineering, University of New South Wales Sydney
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抄録 | Recent advances in membranes based on 2-dimensional (2D) materials have enabled precise control over angstrom-scale pores, providing a unique platform for studying diverse mass transport mechanisms. In this work, we systematically investigate the transport of solvent vapors through 2D channels made of graphene oxide (GO) laminates with precisely controlled oxygen content. Using in-situ chemical reduction of GO with vitamin C, we fabricated reduced GO membranes (VRGMs) with oxygen content systematically decreased from 31.6 % (pristine GO) to 24.0 % (VRGM-maximum reduction). Vapor permeability measurements showed a distinct correlation between oxygen functional groups and solvent transport behaviour. Specifically, non-polar hexane exhibits 114 % of enhanced permeance through the reduced membranes with larger graphitic domains, while the permeance of water decreases by 55 %. With the support of density functional theory (DFT) simulations, we modelled the hydrogen-bond and dispersion complexes between the solvents and GO and calculated the complexation energies. The simulation results suggest that polar molecules interact with the oxygen functional groups of GO via a hydrogen-bond network, supporting in-plane transport. In contrast, van der Waals forces drive the transport of low-polarity solvents along the graphitic domains of the 2D channel in reduced GO membranes. Our findings provide potential strategies for future design of organic solvent nanofiltration membranes.
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キーワード | Graphene oxide
Organic solvent nanofiltration
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発行日 | 2025-08
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出版物タイトル |
Carbon
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巻 | 243巻
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出版者 | Elsevier BV
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開始ページ | 120539
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ISSN | 0008-6223
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NCID | AA00598943
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資料タイプ |
学術雑誌論文
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言語 |
英語
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OAI-PMH Set |
岡山大学
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著作権者 | © 2025 The Authors.
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論文のバージョン | publisher
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DOI | |
Web of Science KeyUT | |
関連URL | isVersionOf https://doi.org/10.1016/j.carbon.2025.120539
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ライセンス | http://creativecommons.org/licenses/by/4.0/
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