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Thermal energy storage foam concrete incorporating n-Octadecane/CuO microcapsules synthesised via Pickering emulsion strategy.

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Title: Thermal energy storage foam concrete incorporating n-Octadecane/CuO microcapsules synthesised via Pickering emulsion strategy.
Authors: Liu, Jingbo1 (AUTHOR), Liu, Yue1 (AUTHOR) yue.liu@unisa.edu.au, Ma, Xing1 (AUTHOR), Xu, Haolan2 (AUTHOR), Wu, Xuan2 (AUTHOR), Liu, Ming2 (AUTHOR), Liu, Jiarui2 (AUTHOR), Zhuge, Yan1 (AUTHOR) yan.zhuge@unisa.edu.au
Source: Cement & Concrete Composites. May2026, Vol. 169, pN.PAG-N.PAG. 1p.
Subjects: Octadecane, Pickering emulsions, Heat storage, Microencapsulation, Latent heat, Thermal conductivity, Phase change materials, Lightweight concrete
Abstract: This study developed a novel encapsulation methodology for the synthesis of phase change material microcapsules based on the Pickering emulsion strategy. Cu 2 O nanoparticles were selected as emulsifier in this study, effectively stabilised n -Octadecane (C 18) Pickering emulsions and acted as precursors for shell formation, leading to the successful formation of C 18 /Cu 2 O colloidosomes. Upon self-oxidation, Cu 2 O transformed to CuO, enabling crosslinking between neighbouring particles on the emulsion and forming robust microcapsule CuO shells. The resulting C 18 /CuO microcapsules retained a high latent heat capacity after encapsulation, indicating effective thermal storage performance and high encapsulation efficiency. The C 18 /CuO also demonstrated thermal reliability after repeated thermal cycling and improved charging/discharging rate as compared to pure C 18 , making it highly suitable for improving thermal performance in energy-efficient construction materials. Thermal energy storage foam concrete containing 20–50 % C 18 /CuO microcapsules was prepared. Infrared thermal imaging indicated that the C 18 /CuO-derived composites exhibited slower temperature rise and faster cooling response. A thermal conductivity of 0.6112 W/m K was achieved at 50 % C 18 /CuO inclusion, demonstrating the potential of the C 18 /CuO-modified foam concrete for energy efficiency applications. • A novel Pickering emulsion-based encapsulation for n-Octadecane/CuO synthesis. • Cu 2 O nanoparticles stabilised Pickering emulsion forming core-shell colloidosomes. • Cross-link CuO subunits formed robust shell walls. • High latent heat capacity and thermal cycling reliability of the microcapsules. • n-Octadecane/CuO modified foam concrete showed enhanced thermal performance. [ABSTRACT FROM AUTHOR]
Copyright of Cement & Concrete Composites is the property of Elsevier B.V. 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.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 192196145
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PubType: Academic Journal
PubTypeId: academicJournal
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Thermal energy storage foam concrete incorporating n-Octadecane/CuO microcapsules synthesised via Pickering emulsion strategy.
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  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Liu%2C+Jingbo%22">Liu, Jingbo</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Yue%22">Liu, Yue</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> yue.liu@unisa.edu.au</i><br /><searchLink fieldCode="AR" term="%22Ma%2C+Xing%22">Ma, Xing</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xu%2C+Haolan%22">Xu, Haolan</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wu%2C+Xuan%22">Wu, Xuan</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Ming%22">Liu, Ming</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Jiarui%22">Liu, Jiarui</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhuge%2C+Yan%22">Zhuge, Yan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> yan.zhuge@unisa.edu.au</i>
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  Label: Source
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  Data: <searchLink fieldCode="JN" term="%22Cement+%26+Concrete+Composites%22">Cement & Concrete Composites</searchLink>. May2026, Vol. 169, pN.PAG-N.PAG. 1p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Octadecane%22">Octadecane</searchLink><br /><searchLink fieldCode="DE" term="%22Pickering+emulsions%22">Pickering emulsions</searchLink><br /><searchLink fieldCode="DE" term="%22Heat+storage%22">Heat storage</searchLink><br /><searchLink fieldCode="DE" term="%22Microencapsulation%22">Microencapsulation</searchLink><br /><searchLink fieldCode="DE" term="%22Latent+heat%22">Latent heat</searchLink><br /><searchLink fieldCode="DE" term="%22Thermal+conductivity%22">Thermal conductivity</searchLink><br /><searchLink fieldCode="DE" term="%22Phase+change+materials%22">Phase change materials</searchLink><br /><searchLink fieldCode="DE" term="%22Lightweight+concrete%22">Lightweight concrete</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This study developed a novel encapsulation methodology for the synthesis of phase change material microcapsules based on the Pickering emulsion strategy. Cu 2 O nanoparticles were selected as emulsifier in this study, effectively stabilised n -Octadecane (C 18) Pickering emulsions and acted as precursors for shell formation, leading to the successful formation of C 18 /Cu 2 O colloidosomes. Upon self-oxidation, Cu 2 O transformed to CuO, enabling crosslinking between neighbouring particles on the emulsion and forming robust microcapsule CuO shells. The resulting C 18 /CuO microcapsules retained a high latent heat capacity after encapsulation, indicating effective thermal storage performance and high encapsulation efficiency. The C 18 /CuO also demonstrated thermal reliability after repeated thermal cycling and improved charging/discharging rate as compared to pure C 18 , making it highly suitable for improving thermal performance in energy-efficient construction materials. Thermal energy storage foam concrete containing 20–50 % C 18 /CuO microcapsules was prepared. Infrared thermal imaging indicated that the C 18 /CuO-derived composites exhibited slower temperature rise and faster cooling response. A thermal conductivity of 0.6112 W/m K was achieved at 50 % C 18 /CuO inclusion, demonstrating the potential of the C 18 /CuO-modified foam concrete for energy efficiency applications. • A novel Pickering emulsion-based encapsulation for n-Octadecane/CuO synthesis. • Cu 2 O nanoparticles stabilised Pickering emulsion forming core-shell colloidosomes. • Cross-link CuO subunits formed robust shell walls. • High latent heat capacity and thermal cycling reliability of the microcapsules. • n-Octadecane/CuO modified foam concrete showed enhanced thermal performance. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Cement & Concrete Composites is the property of Elsevier B.V. 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: 10.1016/j.cemconcomp.2026.106545
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Octadecane
        Type: general
      – SubjectFull: Pickering emulsions
        Type: general
      – SubjectFull: Heat storage
        Type: general
      – SubjectFull: Microencapsulation
        Type: general
      – SubjectFull: Latent heat
        Type: general
      – SubjectFull: Thermal conductivity
        Type: general
      – SubjectFull: Phase change materials
        Type: general
      – SubjectFull: Lightweight concrete
        Type: general
    Titles:
      – TitleFull: Thermal energy storage foam concrete incorporating n-Octadecane/CuO microcapsules synthesised via Pickering emulsion strategy.
        Type: main
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          Name:
            NameFull: Liu, Jingbo
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            NameFull: Liu, Yue
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            NameFull: Ma, Xing
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            NameFull: Xu, Haolan
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            NameFull: Wu, Xuan
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            NameFull: Liu, Ming
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            NameFull: Liu, Jiarui
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            NameFull: Zhuge, Yan
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            – D: 01
              M: 05
              Text: May2026
              Type: published
              Y: 2026
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              Value: 169
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            – TitleFull: Cement & Concrete Composites
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