Wettability Effect on Nanoconfined Water's Spontaneous Imbibition: Interfacial Molecule–Surface Action Mechanism Based on the Integration of Profession and Innovation.
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| Title: | Wettability Effect on Nanoconfined Water's Spontaneous Imbibition: Interfacial Molecule–Surface Action Mechanism Based on the Integration of Profession and Innovation. |
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| Authors: | Wan, Yanglu1,2 (AUTHOR), Lu, Wei1,2,3 (AUTHOR), Jiao, Yang1,3 (AUTHOR), Li, Fulong1,4 (AUTHOR), Zhan, Mingfang1 (AUTHOR), Wang, Zichen1,2 (AUTHOR), Sun, Zheng1,3,4 (AUTHOR) sunzheng@cumt.edu.cn |
| Source: | Nanomaterials (2079-4991). Sep2025, Vol. 15 Issue 18, p1447. 18p. |
| Subjects: | Wetting, Viscosity, Hydrodynamics, Nanopores, Absorption, Porosity, Intermolecular interactions, Fluid dynamics |
| Abstract: | The effect of molecule–surface interaction strength on water becomes pronounced when pore size shrinks to the nanoscale, leading to the spatially varying viscosity and water slip phenomena that break the theoretical basis of the classic Lucas–Washburn (L-W) equation for the spontaneous imbibition of water. With the purpose of fulfilling the knowledge gap, the viscosity of nanoconfined water is investigated in relation to surface contact angle, a critical parameter manifesting microscopic molecule–surface interaction strength. Then, the water slip length at the nanoscale is determined in accordance with the mechanical balance of the first-layer water molecules, which enlarges gradually with increasing contact angle, indicating a weaker surface–molecule interaction. After that, a novel model for the spontaneous imbibition of nanoconfined water incorporating spatially inhomogeneous water viscosity and water slip is developed for the first time, demonstrating that the conventional model yields overestimations of 16.7–103.2%. Hydrodynamics affected by pore geometry are considered as well. The results indicate the following: (a) Enhanced viscosity resulting from the nanopore surface action reduces the water imbibition distance, the absolute magnitude of which could be 3 times greater than the positive impact of water slip. (b) With increasing pore size, the impact of water slip declines much faster than the enhanced viscosity, leading to the ratio of the nanoconfined water imbibition distance to the result of the L-W equation dropping rapidly at first and then approaching unity. (c) Water imbibition performance in slit nanopores is superior to that in nanoscale capillaries, stemming from the fact that the effective water viscosity in nano-capillaries is greater than that in slit nanopores by 5.1–22.1%, suggesting stronger hydrodynamic resistance. This research is able to provide an accurate prediction of spontaneous imbibition of nanoconfined water with microscopic mechanisms well captured, sharing broad application potential in hydraulic fracturing water analysis and water-flooding-enhanced oil/gas recovery. [ABSTRACT FROM AUTHOR] |
| Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
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| Items | – Name: Title Label: Title Group: Ti Data: Wettability Effect on Nanoconfined Water's Spontaneous Imbibition: Interfacial Molecule–Surface Action Mechanism Based on the Integration of Profession and Innovation. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Wan%2C+Yanglu%22">Wan, Yanglu</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lu%2C+Wei%22">Lu, Wei</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Jiao%2C+Yang%22">Jiao, Yang</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Fulong%22">Li, Fulong</searchLink><relatesTo>1,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhan%2C+Mingfang%22">Zhan, Mingfang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Zichen%22">Wang, Zichen</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sun%2C+Zheng%22">Sun, Zheng</searchLink><relatesTo>1,3,4</relatesTo> (AUTHOR)<i> sunzheng@cumt.edu.cn</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Nanomaterials+%282079-4991%29%22">Nanomaterials (2079-4991)</searchLink>. Sep2025, Vol. 15 Issue 18, p1447. 18p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Wetting%22">Wetting</searchLink><br /><searchLink fieldCode="DE" term="%22Viscosity%22">Viscosity</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrodynamics%22">Hydrodynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Nanopores%22">Nanopores</searchLink><br /><searchLink fieldCode="DE" term="%22Absorption%22">Absorption</searchLink><br /><searchLink fieldCode="DE" term="%22Porosity%22">Porosity</searchLink><br /><searchLink fieldCode="DE" term="%22Intermolecular+interactions%22">Intermolecular interactions</searchLink><br /><searchLink fieldCode="DE" term="%22Fluid+dynamics%22">Fluid dynamics</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The effect of molecule–surface interaction strength on water becomes pronounced when pore size shrinks to the nanoscale, leading to the spatially varying viscosity and water slip phenomena that break the theoretical basis of the classic Lucas–Washburn (L-W) equation for the spontaneous imbibition of water. With the purpose of fulfilling the knowledge gap, the viscosity of nanoconfined water is investigated in relation to surface contact angle, a critical parameter manifesting microscopic molecule–surface interaction strength. Then, the water slip length at the nanoscale is determined in accordance with the mechanical balance of the first-layer water molecules, which enlarges gradually with increasing contact angle, indicating a weaker surface–molecule interaction. After that, a novel model for the spontaneous imbibition of nanoconfined water incorporating spatially inhomogeneous water viscosity and water slip is developed for the first time, demonstrating that the conventional model yields overestimations of 16.7–103.2%. Hydrodynamics affected by pore geometry are considered as well. The results indicate the following: (a) Enhanced viscosity resulting from the nanopore surface action reduces the water imbibition distance, the absolute magnitude of which could be 3 times greater than the positive impact of water slip. (b) With increasing pore size, the impact of water slip declines much faster than the enhanced viscosity, leading to the ratio of the nanoconfined water imbibition distance to the result of the L-W equation dropping rapidly at first and then approaching unity. (c) Water imbibition performance in slit nanopores is superior to that in nanoscale capillaries, stemming from the fact that the effective water viscosity in nano-capillaries is greater than that in slit nanopores by 5.1–22.1%, suggesting stronger hydrodynamic resistance. This research is able to provide an accurate prediction of spontaneous imbibition of nanoconfined water with microscopic mechanisms well captured, sharing broad application potential in hydraulic fracturing water analysis and water-flooding-enhanced oil/gas recovery. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.3390/nano15181447 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 18 StartPage: 1447 Subjects: – SubjectFull: Wetting Type: general – SubjectFull: Viscosity Type: general – SubjectFull: Hydrodynamics Type: general – SubjectFull: Nanopores Type: general – SubjectFull: Absorption Type: general – SubjectFull: Porosity Type: general – SubjectFull: Intermolecular interactions Type: general – SubjectFull: Fluid dynamics Type: general Titles: – TitleFull: Wettability Effect on Nanoconfined Water's Spontaneous Imbibition: Interfacial Molecule–Surface Action Mechanism Based on the Integration of Profession and Innovation. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Wan, Yanglu – PersonEntity: Name: NameFull: Lu, Wei – PersonEntity: Name: NameFull: Jiao, Yang – PersonEntity: Name: NameFull: Li, Fulong – PersonEntity: Name: NameFull: Zhan, Mingfang – PersonEntity: Name: NameFull: Wang, Zichen – PersonEntity: Name: NameFull: Sun, Zheng IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 09 Text: Sep2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 20794991 Numbering: – Type: volume Value: 15 – Type: issue Value: 18 Titles: – TitleFull: Nanomaterials (2079-4991) Type: main |
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