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<p>The development of photocatalytic materials for the degradation of hazardous pollutants in aqueous solutions is a research area of interest to researchers in the field of environmental remediation. This work investigates a simple hydrothermal method for preparing CuWO<sub>4</sub>, g-C<sub>3</sub>N<sub>4</sub>, ZnO, and CuWO<sub>4</sub><b>/</b>ZnO/N-g-C<sub>3</sub>N<sub>4</sub> as photocatalysts for the degradation of Rhodamine dye (RhB) in aqueous solution. The fabricated nanostructure was characterized using several advanced techniques. XRD analysis showed the presence of signals related to CuWO<sub>4</sub>, g-C<sub>3</sub>N<sub>4</sub> and ZnO suggesting that CuWO<sub>4</sub> and ZnO were loaded onto g-C<sub>3</sub>N<sub>4</sub> sheets. Additionally, optical results showed a significant narrowing of the band gap energy of the CuWO<sub>4</sub>/ZnO/g-C<sub>3</sub>N<sub>4</sub> (2.85&#xa0;eV) compared to pure ZnO (3.2&#xa0;eV). The results of the optimum photocatalytic activity of CuWO<sub>4</sub>/ZnO/g-C<sub>3</sub>N<sub>4</sub> showed a degradation efficiency of 95.16% (photocatalyst mass = 1.2&#xa0;g/L, dye concentration = 5 ppm, irradiation period = 80&#xa0;min, and pH 9). Reuse results showed that the CuWO<sub>4</sub>/ZnO/g-C<sub>3</sub>N<sub>4</sub> nanocomposite retained approximately 84.62% of its initial activity after five successive cycles.</p>

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Enhancement of Photocatalytic Degradation of RhB Dye Using CuWO4/ZnO/N-g-C3N4 Nanocomposite Under Visible Light Irradiation

  • 期刊论文

  • 发表日期：

    2025年6月10日

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  • Rasha H. Albusalih,
  • Hassan A. Alshamsi

摘要

The development of photocatalytic materials for the degradation of hazardous pollutants in aqueous solutions is a research area of interest to researchers in the field of environmental remediation. This work investigates a simple hydrothermal method for preparing CuWO4, g-C3N4, ZnO, and CuWO4/ZnO/N-g-C3N4 as photocatalysts for the degradation of Rhodamine dye (RhB) in aqueous solution. The fabricated nanostructure was characterized using several advanced techniques. XRD analysis showed the presence of signals related to CuWO4, g-C3N4 and ZnO suggesting that CuWO4 and ZnO were loaded onto g-C3N4 sheets. Additionally, optical results showed a significant narrowing of the band gap energy of the CuWO4/ZnO/g-C3N4 (2.85 eV) compared to pure ZnO (3.2 eV). The results of the optimum photocatalytic activity of CuWO4/ZnO/g-C3N4 showed a degradation efficiency of 95.16% (photocatalyst mass = 1.2 g/L, dye concentration = 5 ppm, irradiation period = 80 min, and pH 9). Reuse results showed that the CuWO4/ZnO/g-C3N4 nanocomposite retained approximately 84.62% of its initial activity after five successive cycles.