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Abstract <p>In this paper, an attempt is made to know the changes that occur in the optical properties of WO<sub>3</sub> and TiO<sub>2</sub> nanopowders after forming WO<sub>3</sub>@TiO<sub>2</sub> Core-shell nanopowder. Using the anodizing method, WO<sub>3</sub> and TiO<sub>2</sub> nanopowders were synthesized. WO<sub>3</sub>@TiO<sub>2</sub> powder was formed using the hydrothermal method. Analytical techniques including SEM, TEM, XRD, and UV-VIS diffuse reflectance spectra were used to characterize each of the three samples. Reflectance percentage, absorbance percentage as well as Absorption, Scattering, and Extinction cross sections for all samples were studied. The energy band gaps were calculated for all samples, they were 2.72, 3.57, and 3.6 eV for WO<sub>3</sub>, TiO<sub>2</sub>, and WO<sub>3</sub>@TiO<sub>2</sub>, respectively. A material with better absorption and a longer spectrum response than each material alone is created by WO<sub>3</sub>@TiO<sub>2</sub>, which combines the characteristics of both WO<sub>3</sub> and TiO<sub>2</sub>.</p>

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Optical Properties Comparison of WO3, WO3@TiO2 and TiO2 Nanopowders

  • 期刊论文

  • 发表日期：

    2025年10月22日

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  • Mustafa Shakir Hashim,
  • Reem Saadi Khaleel,
  • Hussein Thamir Saloom

摘要

Abstract

In this paper, an attempt is made to know the changes that occur in the optical properties of WO3 and TiO2 nanopowders after forming WO3@TiO2 Core-shell nanopowder. Using the anodizing method, WO3 and TiO2 nanopowders were synthesized. WO3@TiO2 powder was formed using the hydrothermal method. Analytical techniques including SEM, TEM, XRD, and UV-VIS diffuse reflectance spectra were used to characterize each of the three samples. Reflectance percentage, absorbance percentage as well as Absorption, Scattering, and Extinction cross sections for all samples were studied. The energy band gaps were calculated for all samples, they were 2.72, 3.57, and 3.6 eV for WO3, TiO2, and WO3@TiO2, respectively. A material with better absorption and a longer spectrum response than each material alone is created by WO3@TiO2, which combines the characteristics of both WO3 and TiO2.