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<p>A simple approach was used to effectively manufacture g-C<sub>3</sub>N<sub>4</sub>/NaTaO<sub>3</sub>/Zn<sub>0.5</sub>Co<sub>0.5</sub>Fe<sub>2</sub>O<sub>4</sub>–rGO, a new magnetic photocatalyst, in order to build an effective visible-light-responsive heterojunction system. Structural and morphological properties of the composites were characterized using SEM, TEM, FT-IR, XRD, XPS, and UV-vis-DRS. According to photophysical and electrochemical characterizations, the combination of g-C<sub>3</sub>N<sub>4</sub>, NaTaO<sub>3</sub>, Zn<sub>0.5</sub>Co<sub>0.5</sub>Fe<sub>2</sub>O<sub>4</sub>, and reduced graphene oxide not only improves light absorption but also makes it easier for charges to separate and transfer quickly. By outperforming pristine NaTaO<sub>3</sub> by 7.4 and 5.8 times, respectively, the composite demonstrates exceptional photocatalytic degradation performance toward methylene blue (91.8% elimination) and ibuprofen (80.1% removal) under visible light. The predominant active species are hydroxyl (•OH) and superoxide (∙O<sub>2</sub>⁻) radicals, according to radical scavenging tests. Additionally, the catalyst exhibits strong antibacterial activity against E. coli and outstanding magnetic recoverability, which are ascribed to oxidative stress brought on by reactive radicals. Applications for this multipurpose photocatalyst in environmental disinfection and wastewater treatment are quite promising.</p> Graphical abstract <p></p>

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Preparation of g-C3N4/NaTaO3/Zn0.5Co0.5Fe2O4–rGO Composite and Photocatalytic Degradation of Methylene Blue and Ibuprofen

  • 期刊论文

  • 发表日期：

    2025年6月21日

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  • Zong-Li Ren,
  • Ya-Li Fang,
  • Qiong Wu,
  • Xin Ma,
  • Zongli Ren

摘要

A simple approach was used to effectively manufacture g-C3N4/NaTaO3/Zn0.5Co0.5Fe2O4–rGO, a new magnetic photocatalyst, in order to build an effective visible-light-responsive heterojunction system. Structural and morphological properties of the composites were characterized using SEM, TEM, FT-IR, XRD, XPS, and UV-vis-DRS. According to photophysical and electrochemical characterizations, the combination of g-C3N4, NaTaO3, Zn0.5Co0.5Fe2O4, and reduced graphene oxide not only improves light absorption but also makes it easier for charges to separate and transfer quickly. By outperforming pristine NaTaO3 by 7.4 and 5.8 times, respectively, the composite demonstrates exceptional photocatalytic degradation performance toward methylene blue (91.8% elimination) and ibuprofen (80.1% removal) under visible light. The predominant active species are hydroxyl (•OH) and superoxide (∙O2⁻) radicals, according to radical scavenging tests. Additionally, the catalyst exhibits strong antibacterial activity against E. coli and outstanding magnetic recoverability, which are ascribed to oxidative stress brought on by reactive radicals. Applications for this multipurpose photocatalyst in environmental disinfection and wastewater treatment are quite promising.

Graphical abstract