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<p>Several industries such as food processing, architecture, engineering, and construction, and manufacturing sectors encounter significant obstacles in enhancing energy efficiency due to their considerable energy use, especially in energy-conversion systems. This research examines the improvement of heat conductivity in sheet metal composites using electrophoretic deposition (EPD) coatings of carbon-captured supra-graphene quantum dot (GQD) assemblies. These novel coatings, created using sustainable carbon-capture techniques, present a potential strategy for enhancing thermal conductivity for sheet metal materials. This study demonstrates that the integration of supra-GQDs into sheet metal coatings by EPD coating results in the increase of their thermal conductivity by as much as 280&#xa0;pct relative to uncoated metals. Laboratory-scale tests and prototype assessments indicate that the coated metals exhibit enhanced heat transfer efficiency, with temperature differentials reaching 5.9&#xa0;°C in building envelope simulations. Surface characterization methods, such as Raman spectroscopy and scanning electron microscopy with energy dispersive X-ray spectroscopy&#xa0;(SEM-EDS), validate the effective application of GQD assemblies onto metallic surfaces. This research presents an innovative approach to enhancing passive energy-efficient materials in sustainable building. The use of carbon-capture GQDs mitigates environmental issues while fulfilling the demand for superior thermal control in various building, food, and manufacturing applications, satisfying with the United Nation Sustainable Development Goals (UN-SDGs).</p> Graphical Abstract <p></p>

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Thermal Conductivity of Sheet Metal Composites Electrophoretic Deposition-Coated with Carbon-Captured Supra-Graphene Quantum Dot (GQD) Assemblies

  • 期刊论文

  • 发表日期：

    2025年4月10日

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  • Lapyote Prasittisopin,
  • Thanabodee Boonlertsamut,
  • Narin Jantaping,
  • Yuttanant Boonyongmaneerat,
  • Joongjai Panpranot

摘要

Several industries such as food processing, architecture, engineering, and construction, and manufacturing sectors encounter significant obstacles in enhancing energy efficiency due to their considerable energy use, especially in energy-conversion systems. This research examines the improvement of heat conductivity in sheet metal composites using electrophoretic deposition (EPD) coatings of carbon-captured supra-graphene quantum dot (GQD) assemblies. These novel coatings, created using sustainable carbon-capture techniques, present a potential strategy for enhancing thermal conductivity for sheet metal materials. This study demonstrates that the integration of supra-GQDs into sheet metal coatings by EPD coating results in the increase of their thermal conductivity by as much as 280 pct relative to uncoated metals. Laboratory-scale tests and prototype assessments indicate that the coated metals exhibit enhanced heat transfer efficiency, with temperature differentials reaching 5.9 °C in building envelope simulations. Surface characterization methods, such as Raman spectroscopy and scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDS), validate the effective application of GQD assemblies onto metallic surfaces. This research presents an innovative approach to enhancing passive energy-efficient materials in sustainable building. The use of carbon-capture GQDs mitigates environmental issues while fulfilling the demand for superior thermal control in various building, food, and manufacturing applications, satisfying with the United Nation Sustainable Development Goals (UN-SDGs).

Graphical Abstract