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<p>The solgel-assisted synthesis was employed to fabricated reduced graphene oxide (rGO) supported α-RuO<sub>2</sub>-TiO<sub>2</sub> nanocomposite in various weight percent ratios. Different spectroscopic techniques were used to investigate size, band gap, surface area, morphology and elemental compositions of α-RuO<sub>2</sub>-TiO<sub>2</sub>/rGO. In this study, Congo Red (CR) and Bismarck brown Y (BBY) have been chosen as model pollutants and the discoloration of these dyes was achieved within 45&#xa0;min of irradiation. The photodegradation of CR and BBY dyes in the presence of these metal oxides, TiO<sub>2</sub>, α-RuO<sub>2</sub>, sample A, B and C and α-RuO<sub>2</sub>-TiO<sub>2</sub>/ rGO (D) were found to be 88, 65, 89, 93, 95, and 99%, while using BBY dye showed 91, 77, 90, 92, 95, and 98%. The degradation fragments for CR and BBY dyes were identified using liquid chromatography-mass spectrometry (LC-MS), and possible methods for the generation of degraded intermediates were predicted.</p>

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Reduced Graphene Oxide Loaded α-RuO2-TiO2 Nanocomposite: Synthesis, Characterizations and Photocatalytic Applications of Congo Red and Bismarck Brown Dyes

  • 期刊论文

  • 发表日期：

    2025年11月3日

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  • B. S. Ramya,
  • G. Krishnamurthy

摘要

The solgel-assisted synthesis was employed to fabricated reduced graphene oxide (rGO) supported α-RuO2-TiO2 nanocomposite in various weight percent ratios. Different spectroscopic techniques were used to investigate size, band gap, surface area, morphology and elemental compositions of α-RuO2-TiO2/rGO. In this study, Congo Red (CR) and Bismarck brown Y (BBY) have been chosen as model pollutants and the discoloration of these dyes was achieved within 45 min of irradiation. The photodegradation of CR and BBY dyes in the presence of these metal oxides, TiO2, α-RuO2, sample A, B and C and α-RuO2-TiO2/ rGO (D) were found to be 88, 65, 89, 93, 95, and 99%, while using BBY dye showed 91, 77, 90, 92, 95, and 98%. The degradation fragments for CR and BBY dyes were identified using liquid chromatography-mass spectrometry (LC-MS), and possible methods for the generation of degraded intermediates were predicted.