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Nanotechnology

Researchers Develop New Photocatalytic Materials for Enhanced Methylene Blue Degradation

Strategic Insights

— 1 min read

Researchers from Federal University Alagoas have developed novel photocatalytic materials for the efficient degradation of methylene blue (MB) under visible light irradiation. The study, published in Materials Chemistry and Physics, demonstrates the synthesis of pristine and mixed cerium and niobium oxides using the Pechini and chitosan methods. The researchers found that the incorporation of niobium into the ceramic lattice resulted in a decrease in the lattice parameter, but also enhanced the photocatalytic activity.

Key Takeaways:

  • The Pechini method was found to produce materials with better structural and textural properties compared to the chitosan method.
  • The incorporation of niobium into the ceramic lattice reduced the lattice parameter and enhanced the photocatalytic activity.
  • The mixed oxides showed higher photocatalytic efficiency, reaching 84% for the CeNb(Pech) and CeNb(Chit) systems.
  • Surface acidity played a significant role in the photocatalytic efficiency, with 99% degradation of methylene blue achieved for the Nb(Pech) and Nb(Chit) materials.
  • The researchers demonstrated that the properties of the synthesized materials influence their optical-electronic properties.

Statistics:

  • 84% photocatalytic efficiency achieved by the CeNb(Pech) and CeNb(Chit) systems.
  • 99% degradation of methylene blue achieved for the Nb(Pech) and Nb(Chit) materials.
  • The lattice parameter decreased by 5% with the incorporation of niobium into the ceramic lattice.
  • The study employed a series of pure and mixed cerium and niobium oxides, with 5, 15, and 25% niobium content.
  • The Pechini method produced materials with better structural and textural properties.

Sources:

  • Meyer, A. et al. Pristine and Mixed Cerium and Niobium Oxides Synthesized Via Pechini and Chitosan Methods: Effect of Properties On Methylene Blue (Mb) Photodegradation. Materials Chemistry and Physics, 2025; 344.
  • NewsRx. Reports from Federal University Alagoas Highlight Recent Findings in Photocatalytics [Pristine and Mixed Cerium and Niobium Oxides Synthesized Via Pechini and Chitosan Methods: Effect of Properties On Methylene Blue (Mb) Photodegradation]. Nanotechnology Weekly. October 20, 2025; p 3191.

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