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<p>Due to efficient charge separation and strong visible-light absorption, g-C<sub>3</sub>N<sub>4</sub>-based heterogeneous photocatalyts have sparked significant interest in alleviating energy and environmental crisis. The present study reports CeO<sub>2</sub>/PbFe<sub>12</sub>O<sub>19</sub> nanocomposite with photocatalytic properties that has been designed via sol–gel auto-combustion process utilizing different carbohydrate sugars as capping agent and fuel. Also, this investigation developed an ultrasonic-assisted co-precipitation route for the creation of ternary CeO<sub>2</sub>/PbFe<sub>12</sub>O<sub>19</sub>/g-C<sub>3</sub>N<sub>4</sub> nanocomposites with diverse contents of nano-CeO<sub>2</sub>/PbFe<sub>12</sub>O<sub>19</sub> to promote activity toward the degradation of malachite green (MG) pollutant under visible light. The results showed that 30&#xa0;mg of resulting CeO<sub>2</sub>/PbFe<sub>12</sub>O<sub>19</sub> nanostructures can achieve 46.68% degradation of MG at 10&#xa0;mg L<sup>−1</sup>, while nanocomposites having mass ratio of 1:1 for CeO<sub>2</sub>/PbFe<sub>12</sub>O<sub>19</sub>: g-C<sub>3</sub>N<sub>4</sub> showed 81.50% efficiency after 120&#xa0;min at similar conditions. Radical scavenging experiments confirmed that •OH and h<sup>+</sup> play a dominant role in MG degradation by CeO<sub>2</sub>/PbFe<sub>12</sub>O<sub>19</sub>/g-C<sub>3</sub>N<sub>4</sub> nanocomposites. These results highlight the potential application of CeO<sub>2</sub>/PbFe<sub>12</sub>O<sub>19</sub>/g-C<sub>3</sub>N<sub>4</sub> as a promising photocatalyst for removing water-soluble organic pollutants.</p>

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Sol–gel auto-combustion synthesis and characterization of CeO2/PbFe12O19/g-C3N4 nanocomposites with enhanced visible-light photocatalytic activity

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年1月31日

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  • Maryam Rezaei,
  • Rozita Monsef,
  • Elmuez A. Dawi,
  • Forat H. Alsultany,
  • Hadil Hussain Hamza,
  • Ahmad Akbari,
  • Hanieh Ansarinejad,
  • Masoud Salavati-Niasari

摘要

Due to efficient charge separation and strong visible-light absorption, g-C3N4-based heterogeneous photocatalyts have sparked significant interest in alleviating energy and environmental crisis. The present study reports CeO2/PbFe12O19 nanocomposite with photocatalytic properties that has been designed via sol–gel auto-combustion process utilizing different carbohydrate sugars as capping agent and fuel. Also, this investigation developed an ultrasonic-assisted co-precipitation route for the creation of ternary CeO2/PbFe12O19/g-C3N4 nanocomposites with diverse contents of nano-CeO2/PbFe12O19 to promote activity toward the degradation of malachite green (MG) pollutant under visible light. The results showed that 30 mg of resulting CeO2/PbFe12O19 nanostructures can achieve 46.68% degradation of MG at 10 mg L−1, while nanocomposites having mass ratio of 1:1 for CeO2/PbFe12O19: g-C3N4 showed 81.50% efficiency after 120 min at similar conditions. Radical scavenging experiments confirmed that •OH and h+ play a dominant role in MG degradation by CeO2/PbFe12O19/g-C3N4 nanocomposites. These results highlight the potential application of CeO2/PbFe12O19/g-C3N4 as a promising photocatalyst for removing water-soluble organic pollutants.