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Light-reflective properties of spherical TiO2 particles coated with (3-aminopropyl)trimethoxysilane, chitosan, SiO2, and SnO2

  • Materials (Organic, Inorganic, Electronic, Thin Films)
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Abstract

We synthesized TiO2-based composite pigment materials and investigated their light reflection properties. Micrometer-sized spherical TiO2 particles were synthesized by the sol-gel method using hydrolysis and condensation reactions of the precursors, and the rutile phase was prepared by calcining at 800 °C. TiO2-based composite materials were synthesized by coating the surface of the calcined TiO2 with (3-aminopropyl)trimethoxysilane (APTMS), chitosan, SiO2, and SnO2. The morphologies of the composite materials were characterized by field emission scanning electron microscopy (FE-SEM), and the structural properties of the composite materials were identified using powder X-ray diffraction (PXRD) analysis. Finally, the light reflection properties were investigated by measuring the percent reflectance in the wavelength range 300–2,500 nm of the composite materials by diffuse-reflectance UV-Vis-NIR spectroscopic analysis. In the wavelength range 300–2,500 nm, the composite materials showed solar reflectance of 86–93%. The composite materials synthesized in this study have potential for use as heat reflective pigment materials.

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Acknowledgements

This work was supported by a research grant from Kongju National University in 2020.

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Authors and Affiliations

  1. Department of Chemistry, Kongju National University, Gongjudaehak-ro 56, Gongju, 32588, Korea

    Hani Ko & Seog Woo Rhee

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  1. Hani Ko
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  2. Seog Woo Rhee
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Correspondence to Seog Woo Rhee.

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Ko, H., Rhee, S.W. Light-reflective properties of spherical TiO2 particles coated with (3-aminopropyl)trimethoxysilane, chitosan, SiO2, and SnO2. Korean J. Chem. Eng. 40, 1228–1233 (2023). https://doi.org/10.1007/s11814-022-1336-4

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  • DOI: https://doi.org/10.1007/s11814-022-1336-4

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