Convective Heat Transfer Characteristics and Microscopic Mechanisms of Polycarboxylate-Modified 3D Graphene Aqueous Nanofluids in Mini-Channels.
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| Title: | Convective Heat Transfer Characteristics and Microscopic Mechanisms of Polycarboxylate-Modified 3D Graphene Aqueous Nanofluids in Mini-Channels. |
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| Authors: | Liang, Lizhe1 (AUTHOR) lianglizhe@gxu.edu.cn, Li, Qiyuan1 (AUTHOR), Li, Lan1 (AUTHOR) |
| Source: | Energies (19961073). May2026, Vol. 19 Issue 10, p2413. 25p. |
| Subject Terms: | *Graphene, *Nanofluids, *Heat convection, *Thermal conductivity, *Molecular dynamics, *Microchannel flow |
| Abstract: | To overcome graphene aggregation in aqueous nanofluids, polycarboxylate-modified structural graphene (PSG) was synthesized via surface functionalization. Characterizations indicate that the modification preserves the 3D hierarchical porous framework while ensuring exceptional dispersion stability through steric hindrance and enhanced hydrophilicity. Convective heat transfer evaluations demonstrated remarkable enhancement; notably, the 0.1 wt% PSG nanofluid achieved a 46% increase in the heat transfer coefficient over pure water at Re = 4000. Molecular dynamics simulations further revealed the underlying interfacial mechanisms. The surface-anchored oxygen-containing groups induce a dense, hydrogen-bonded hydration layer that restricts local water diffusion. This highly ordered interfacial structure may facilitate vibrational energy exchange across the solid–liquid boundary. Together with the intrinsic high-conductivity 3D skeleton, these microscopic interactions are likely to contribute to the enhanced macroscopic thermal performance, providing a promising framework for designing advanced graphene-based thermal management fluids. [ABSTRACT FROM AUTHOR] |
| Database: | Energy & Power Source |
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| FullText | Links: – Type: pdflink Text: Availability: 1 |
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| Header | DbId: enr DbLabel: Energy & Power Source An: 194141528 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Convective Heat Transfer Characteristics and Microscopic Mechanisms of Polycarboxylate-Modified 3D Graphene Aqueous Nanofluids in Mini-Channels. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Liang%2C+Lizhe%22">Liang, Lizhe</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> lianglizhe@gxu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Li%2C+Qiyuan%22">Li, Qiyuan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Lan%22">Li, Lan</searchLink><relatesTo>1</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Energies+%2819961073%29%22">Energies (19961073)</searchLink>. May2026, Vol. 19 Issue 10, p2413. 25p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Graphene%22">Graphene</searchLink><br />*<searchLink fieldCode="DE" term="%22Nanofluids%22">Nanofluids</searchLink><br />*<searchLink fieldCode="DE" term="%22Heat+convection%22">Heat convection</searchLink><br />*<searchLink fieldCode="DE" term="%22Thermal+conductivity%22">Thermal conductivity</searchLink><br />*<searchLink fieldCode="DE" term="%22Molecular+dynamics%22">Molecular dynamics</searchLink><br />*<searchLink fieldCode="DE" term="%22Microchannel+flow%22">Microchannel flow</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: To overcome graphene aggregation in aqueous nanofluids, polycarboxylate-modified structural graphene (PSG) was synthesized via surface functionalization. Characterizations indicate that the modification preserves the 3D hierarchical porous framework while ensuring exceptional dispersion stability through steric hindrance and enhanced hydrophilicity. Convective heat transfer evaluations demonstrated remarkable enhancement; notably, the 0.1 wt% PSG nanofluid achieved a 46% increase in the heat transfer coefficient over pure water at Re = 4000. Molecular dynamics simulations further revealed the underlying interfacial mechanisms. The surface-anchored oxygen-containing groups induce a dense, hydrogen-bonded hydration layer that restricts local water diffusion. This highly ordered interfacial structure may facilitate vibrational energy exchange across the solid–liquid boundary. Together with the intrinsic high-conductivity 3D skeleton, these microscopic interactions are likely to contribute to the enhanced macroscopic thermal performance, providing a promising framework for designing advanced graphene-based thermal management fluids. [ABSTRACT FROM AUTHOR] |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=194141528 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.3390/en19102413 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 25 StartPage: 2413 Subjects: – SubjectFull: Graphene Type: general – SubjectFull: Nanofluids Type: general – SubjectFull: Heat convection Type: general – SubjectFull: Thermal conductivity Type: general – SubjectFull: Molecular dynamics Type: general – SubjectFull: Microchannel flow Type: general Titles: – TitleFull: Convective Heat Transfer Characteristics and Microscopic Mechanisms of Polycarboxylate-Modified 3D Graphene Aqueous Nanofluids in Mini-Channels. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Liang, Lizhe – PersonEntity: Name: NameFull: Li, Qiyuan – PersonEntity: Name: NameFull: Li, Lan IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 05 Text: May2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 19961073 Numbering: – Type: volume Value: 19 – Type: issue Value: 10 Titles: – TitleFull: Energies (19961073) Type: main |
| ResultId | 1 |
