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<p>In the pursuit of advanced environmental remediation techniques, photocatalysis has emerged as a highly efficient strategy for degrading organic pollutants under visible-light irradiation. This study reports the fabrication of a Z-scheme ZrO<sub>2</sub>/V<sub>2</sub>O<sub>5</sub>/g-C<sub>3</sub>N<sub>4</sub> nanocomposite via the wet impregnation technique and its photocatalytic efficacy in degrading Amoxicillin (AMX) and Crystal Violet (CV) from aqueous solutions. Comprehensive structural and optical characterizations, including XRD, SEM, TEM, UV-DRS, and EIS analyses, confirmed the nanocomposite’s unique features, including a bandgap of 2.3&#xa0;eV. Under visible-light exposure, the photocatalyst achieved degradation efficiencies of 76.96% (k = 0.0169&#xa0;min⁻¹) for AMX and 98.06% (k = 0.0380&#xa0;min⁻¹) for CV within 90&#xa0;min, surpassing the performance of individual components. Radical scavenging studies identified holes (h⁺) and superoxide radicals (O<sub>2</sub>•⁻) as the dominant reactive species. Additionally, the nanocomposite demonstrated remarkable stability and reusability across four cycles, maintaining 66.40% of its original degradation efficiency. These findings highlight the material’s potential for sustainable environmental applications, offering a promising solution for efficient and long-term pollutant removal under visible light.</p> Graphical abstract <p></p>

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Enhanced photocatalytic activity of Z-scheme ZrO2/V2O5 nanocomposite with graphite carbon nitride for effective degradation of amoxicillin and crystal violet under visible light

  • 期刊论文

  • 发表日期：

    2025年2月10日

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  • Pandurangan Vijayalakshmi,
  • Abirami Selvakumar,
  • Vigneshwaran Baskaran,
  • Royapuram Veeraragavan Geetha

摘要

In the pursuit of advanced environmental remediation techniques, photocatalysis has emerged as a highly efficient strategy for degrading organic pollutants under visible-light irradiation. This study reports the fabrication of a Z-scheme ZrO2/V2O5/g-C3N4 nanocomposite via the wet impregnation technique and its photocatalytic efficacy in degrading Amoxicillin (AMX) and Crystal Violet (CV) from aqueous solutions. Comprehensive structural and optical characterizations, including XRD, SEM, TEM, UV-DRS, and EIS analyses, confirmed the nanocomposite’s unique features, including a bandgap of 2.3 eV. Under visible-light exposure, the photocatalyst achieved degradation efficiencies of 76.96% (k = 0.0169 min⁻¹) for AMX and 98.06% (k = 0.0380 min⁻¹) for CV within 90 min, surpassing the performance of individual components. Radical scavenging studies identified holes (h⁺) and superoxide radicals (O2•⁻) as the dominant reactive species. Additionally, the nanocomposite demonstrated remarkable stability and reusability across four cycles, maintaining 66.40% of its original degradation efficiency. These findings highlight the material’s potential for sustainable environmental applications, offering a promising solution for efficient and long-term pollutant removal under visible light.

Graphical abstract