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

IF 2.4 4区化学 Q3 CHEMISTRY, PHYSICAL

Ionics Pub Date : 2025-01-22 DOI:10.1007/s11581-025-06079-6

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

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Abstract

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

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来源期刊

Ionics 化学-电化学

CiteScore

5.30

自引率

7.10%

发文量

427

审稿时长

2.2 months

期刊介绍： Ionics is publishing original results in the fields of science and technology of ionic motion. This includes theoretical, experimental and practical work on electrolytes, electrode, ionic/electronic interfaces, ionic transport aspects of corrosion, galvanic cells, e.g. for thermodynamic and kinetic studies, batteries, fuel cells, sensors and electrochromics. Fast solid ionic conductors are presently providing new opportunities in view of several advantages, in addition to conventional liquid electrolytes.