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<p>In the current work, a CdWO<sub>4</sub>/g-C<sub>3</sub>N<sub>5</sub> nanocomposite was synthesized using a mixed calcination process. The properties like structural, optical, electronic and morphological features of the prepared material were analysed using a range of instrumentation techniques including XRD, FTIR, UV-Vis spectroscopy, FE-SEM, HR-TEM, and XPS spectroscopy. The photocatalytic activity of CdWO<sub>4</sub>/g-C<sub>3</sub>N<sub>5</sub> heterostructure material was evaluated using methyl violet (MV) dye as a target pollutant. Key parameters including catalyst dose, initial concentration of the dye, and solution pH were optimised to evaluate their effect on degradation efficiency. The study achieved a degradation efficiency of about 83% for methyl violet dye by the CdWO<sub>4</sub>/g-C<sub>3</sub>N<sub>5</sub> nanocomposite material under optimized conditions within a period of 90&#xa0;min. The study also considered a mixture of dyes as a pollutant. Reactive species trapping experiments indicated that hydroxyl radicals (•OH) and photogenerated holes (h<sup>+</sup>) play dominant roles in the photocatalytic degradation process.</p>

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CdWO4/g-C3N5 Heterostructures: Synthesis and Enhanced Photocatalytic Degradation of Methyl Violet

  • 期刊论文

  • 发表日期：

    2026年3月21日

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  • Mohan Vishal,
  • Kumar Aravindraj,
  • Selvaraj Mohana Roopan,
  • Arunagiri Sharmila,
  • Chinnadurai Immanuel Selvaraj,
  • Sankar Hari Prakash,
  • Kavitha Sivakumaran Durai Anbu

摘要

In the current work, a CdWO4/g-C3N5 nanocomposite was synthesized using a mixed calcination process. The properties like structural, optical, electronic and morphological features of the prepared material were analysed using a range of instrumentation techniques including XRD, FTIR, UV-Vis spectroscopy, FE-SEM, HR-TEM, and XPS spectroscopy. The photocatalytic activity of CdWO4/g-C3N5 heterostructure material was evaluated using methyl violet (MV) dye as a target pollutant. Key parameters including catalyst dose, initial concentration of the dye, and solution pH were optimised to evaluate their effect on degradation efficiency. The study achieved a degradation efficiency of about 83% for methyl violet dye by the CdWO4/g-C3N5 nanocomposite material under optimized conditions within a period of 90 min. The study also considered a mixture of dyes as a pollutant. Reactive species trapping experiments indicated that hydroxyl radicals (•OH) and photogenerated holes (h+) play dominant roles in the photocatalytic degradation process.