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Abstract <p>In this study, we have synthesized WO<sub>3</sub>/CeTiO<sub>4</sub> binary nanocomposites using a straightforward ethanolic dispersion method. To characterize the nanocomposites, various analytical techniques were employed, including XRD, TEM, SEM, FTIR, UV-DRS), and PL study. XRD analysis confirmed the presence of WO<sub>3</sub> and CeTiO<sub>4</sub> in the binary composite sample. SEM and TEM investigations revealed a strong interaction between WO<sub>3</sub> and CeTiO<sub>4</sub> within the nanocomposite. Additionally, the incorporation of WO<sub>3</sub> into CeTiO<sub>4</sub> led to a reduction in its band gap from 2.72&#xa0;eV to 2.50&#xa0;eV, which enhanced photoelectron separation and increased absorbance intensity in the visible region. Under solar light irradiation, the WO<sub>3</sub>/CeTiO<sub>4</sub> binary nanocomposites demonstrate remarkable photocatalytic efficiency, achieving 99% degradation of reactive orange 30 (RO 30) within 90&#xa0;min. The novelty of WO<sub>3</sub>/CeTiO<sub>4</sub> binary nanocomposites lies in the synergistic integration of WO<sub>3</sub> and CeTiO<sub>4</sub>, which effectively enhances visible-light absorption, promotes efficient charge separation, and facilitates the generation of reactive oxygen species (ROS). This unique architecture allows the nanocomposites to exhibit superior photocatalytic activity compared to their bare photocatalysts (WO<sub>3</sub> and CeTiO<sub>4</sub>), achieving significant degradation of reactive orange 30 (RO 30) and high stability during repeated cycles. These findings underscore the potential of WO<sub>3</sub>/CeTiO<sub>4</sub> nanocomposites as a next-generation photocatalyst for eco-friendly, sunlight-driven applications in environmental and energy sectors.</p> Graphical Abstract <p></p>

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Enhanced Photocatalytic Degradation of Reactive Orange 30 Using WO3/CeTiO4 Binary Nanocomposites with Band Gap Engineering and Superior Solar-Driven Efficiency

  • 期刊论文

  • 发表日期：

    2025年3月25日

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  • Elango Vasithira,
  • Sureshkumar Archunan,
  • Jayachandran Silambarasan,
  • Jaganathan Dharmaraja,
  • Anbalagan Krishnaveni,
  • Santhanam Sivakumar,
  • Saurabh,
  • Subhav Singh,
  • Saurav Dixit,
  • Kaliyappan Sivaranjani

摘要

Abstract

In this study, we have synthesized WO3/CeTiO4 binary nanocomposites using a straightforward ethanolic dispersion method. To characterize the nanocomposites, various analytical techniques were employed, including XRD, TEM, SEM, FTIR, UV-DRS), and PL study. XRD analysis confirmed the presence of WO3 and CeTiO4 in the binary composite sample. SEM and TEM investigations revealed a strong interaction between WO3 and CeTiO4 within the nanocomposite. Additionally, the incorporation of WO3 into CeTiO4 led to a reduction in its band gap from 2.72 eV to 2.50 eV, which enhanced photoelectron separation and increased absorbance intensity in the visible region. Under solar light irradiation, the WO3/CeTiO4 binary nanocomposites demonstrate remarkable photocatalytic efficiency, achieving 99% degradation of reactive orange 30 (RO 30) within 90 min. The novelty of WO3/CeTiO4 binary nanocomposites lies in the synergistic integration of WO3 and CeTiO4, which effectively enhances visible-light absorption, promotes efficient charge separation, and facilitates the generation of reactive oxygen species (ROS). This unique architecture allows the nanocomposites to exhibit superior photocatalytic activity compared to their bare photocatalysts (WO3 and CeTiO4), achieving significant degradation of reactive orange 30 (RO 30) and high stability during repeated cycles. These findings underscore the potential of WO3/CeTiO4 nanocomposites as a next-generation photocatalyst for eco-friendly, sunlight-driven applications in environmental and energy sectors.

Graphical Abstract