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<p>This study focuses on the synthesis and investigation of a BiVO<sub>4</sub>-ZnO nanocomposite (NC) for photocatalytic dye degradation and dielectric applications. The synthesized NC exhibits improved structural, photocatalytic, and dielectric properties compared to its individual components. X-ray diffraction confirms the presence of monoclinic BiVO<sub>4</sub> and hexagonal wurtzite ZnO crystal structures. FESEM images show well-dispersed spherical ZnO and flaky BiVO<sub>4</sub> nanostructures. The NC achieves an impressive 98% degradation of methylene blue (MB) dye molecules in just 15&#xa0;min, which is nearly four times faster than the parent materials. Additionally, photo-stability tests demonstrate excellent performance over five cycles, and radical trapping experiments highlight the roles of holes and hydroxyl radicals in the photodegradation process. Furthermore, dielectric measurements reveal a high dielectric constant of 36.18 and a low loss factor of 0.80. These findings suggest that the BiVO<sub>4</sub>-ZnO nanocomposite is a promising material for environmental remediation and energy storage applications.</p> Graphical Abstract <p></p>

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Preparation and characterization of BiVO4-ZnO nanocomposite as heterogeneous photocatalysts for wastewater treatment and enhanced electrode performance

  • 期刊论文

  • 发表日期：

    2025年1月22日

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  • Kannan Nagarajan,
  • Sundara Venkatesh Perumalsamy,
  • Vijayalakshmi Seenivasan,
  • Jeganathan Kulandaivel,
  • Thangadurai Paramasivam,
  • Jayanthi Santhana Krishnan

摘要

This study focuses on the synthesis and investigation of a BiVO4-ZnO nanocomposite (NC) for photocatalytic dye degradation and dielectric applications. The synthesized NC exhibits improved structural, photocatalytic, and dielectric properties compared to its individual components. X-ray diffraction confirms the presence of monoclinic BiVO4 and hexagonal wurtzite ZnO crystal structures. FESEM images show well-dispersed spherical ZnO and flaky BiVO4 nanostructures. The NC achieves an impressive 98% degradation of methylene blue (MB) dye molecules in just 15 min, which is nearly four times faster than the parent materials. Additionally, photo-stability tests demonstrate excellent performance over five cycles, and radical trapping experiments highlight the roles of holes and hydroxyl radicals in the photodegradation process. Furthermore, dielectric measurements reveal a high dielectric constant of 36.18 and a low loss factor of 0.80. These findings suggest that the BiVO4-ZnO nanocomposite is a promising material for environmental remediation and energy storage applications.

Graphical Abstract