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<p>This study details the efficient synthesis and comprehensive investigation of graphitic carbon nitride (g-C₃N₄) and nickel-copper ferrite (Ni<sub>0.5</sub>Cu<sub>0.5</sub>Fe<sub>2</sub>O<sub>4</sub>) nanocomposite photocatalysts, with a novel focus on the impact of specific&#xa0;g-C<sub>3</sub>N<sub>4</sub>/Ni<sub>0.5</sub>Cu<sub>0.5</sub>Fe<sub>2</sub>O<sub>4</sub> weight ratios on their photocatalytic and nonlinear optical properties. Three uniform heterostructure composites with varying weight ratios (1:1, 1:2, and 2:1) were produced via a simple mechanical grinding technique followed by annealing. Structural analyses confirmed the successful formation of well-dispersed heterojunctions, with g-C₃N₄ sheets effectively coating the Ni<sub>0.5</sub>Cu<sub>0.5</sub>Fe<sub>2</sub>O<sub>4</sub> particles, enhancing interfacial contact. Optical investigations revealed that g-C₃N₄ inclusion reduced the band gap and enhanced visible light absorption in the ferrite matrix. Notably, the 1:1&#xa0;g-C<sub>₃</sub>N<sub>₄</sub>/Ni<sub>0.5</sub>Cu<sub>0.5</sub>Fe<sub>2</sub>O<sub>4</sub> sample exhibited superior photocatalytic performance, achieving 91.59% degradation of the methylene blue dye under xenon light irradiation in 120&#xa0;min. This enhanced activity is attributed to the heterojunction’s ability to facilitate effective charge separation and transfer. These findings highlight g-C<sub>₃</sub>N<sub>₄</sub>/Ni<sub>0.5</sub>Cu<sub>0.5</sub>Fe<sub>2</sub>O<sub>4</sub> nanocomposites, particularly the 1:1 heterostructure, as promising and recyclable photocatalysts for environmental remediation of dye pollutants.</p>

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Enhanced Photocatalytic Degradation of Methylene Blue Using g-C3N4/ NiCuFe2O4 Nanocomposites Under Visible Light Irradiation: A Study of Structural and Optical Characteristics

  • 期刊论文

  • 发表日期：

    2025年7月23日

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  • Hasan Eskalen,
  • Dilaver Yaşar,
  • Mustafa Kavgacı,
  • Hakan Yaykaşlı

摘要

This study details the efficient synthesis and comprehensive investigation of graphitic carbon nitride (g-C₃N₄) and nickel-copper ferrite (Ni0.5Cu0.5Fe2O4) nanocomposite photocatalysts, with a novel focus on the impact of specific g-C3N4/Ni0.5Cu0.5Fe2O4 weight ratios on their photocatalytic and nonlinear optical properties. Three uniform heterostructure composites with varying weight ratios (1:1, 1:2, and 2:1) were produced via a simple mechanical grinding technique followed by annealing. Structural analyses confirmed the successful formation of well-dispersed heterojunctions, with g-C₃N₄ sheets effectively coating the Ni0.5Cu0.5Fe2O4 particles, enhancing interfacial contact. Optical investigations revealed that g-C₃N₄ inclusion reduced the band gap and enhanced visible light absorption in the ferrite matrix. Notably, the 1:1 g-C₃N₄/Ni0.5Cu0.5Fe2O4 sample exhibited superior photocatalytic performance, achieving 91.59% degradation of the methylene blue dye under xenon light irradiation in 120 min. This enhanced activity is attributed to the heterojunction’s ability to facilitate effective charge separation and transfer. These findings highlight g-C₃N₄/Ni0.5Cu0.5Fe2O4 nanocomposites, particularly the 1:1 heterostructure, as promising and recyclable photocatalysts for environmental remediation of dye pollutants.