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<p>A ternary nanocomposite NiO/Ag<sub>2</sub>WO<sub>4</sub>/CeO<sub>2</sub> photocatalyst was successfully synthesized using a simple ethanol-assisted chemical approach. The structural and optical properties were analyzed using XRD, FTIR, SEM, TEM, UV-DRS, and PL, confirming the uniform incorporation of NiO and Ag<sub>2</sub>WO<sub>4</sub> into the CeO<sub>2</sub> matrix with strong interfacial interactions. The ternary nanocomposite showed significantly enhanced photocatalytic activity for methylene blue (MB) degradation under solar irradiation compared to individual components. Optimization studies identified pH 9, a catalyst dosage of 30&#xa0;mg, and an initial dye concentration of 30&#xa0;mg/L as optimal conditions, achieving about 98% degradation within 120&#xa0;min. The improved performance is attributed to efficient charge separation driven by synergistic interactions among the components. The photocatalyst also exhibited good stability, reusability, and easy recovery. Radical scavenging results indicated that superoxide and hydroxyl radicals play key roles in the degradation process. Additionally, the material showed antibacterial activity against Bacillus subtilis and Escherichia coli and potential for antibiotic removal, highlighting its suitability for solar-driven environmental remediation.</p>

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Solar-Responsive NiO/Ag2WO4/CeO2 Nanocomposites for Concurrent Dye Removal and Microbial Inactivation

  • 期刊论文

  • 发表日期：

    2026年5月26日

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  • Mahendran Ananthkumar,
  • Arumugam Priyadharsan,
  • Gomathi Abimannan,
  • Shanmugam Paramasivam,
  • Ranjith Rajendran,
  • Thammasak Rojviroon,
  • Pichamuthu Akilan,
  • Supakorn Boonyuen,
  • Venkatachalam Chandrasekaran

摘要

A ternary nanocomposite NiO/Ag2WO4/CeO2 photocatalyst was successfully synthesized using a simple ethanol-assisted chemical approach. The structural and optical properties were analyzed using XRD, FTIR, SEM, TEM, UV-DRS, and PL, confirming the uniform incorporation of NiO and Ag2WO4 into the CeO2 matrix with strong interfacial interactions. The ternary nanocomposite showed significantly enhanced photocatalytic activity for methylene blue (MB) degradation under solar irradiation compared to individual components. Optimization studies identified pH 9, a catalyst dosage of 30 mg, and an initial dye concentration of 30 mg/L as optimal conditions, achieving about 98% degradation within 120 min. The improved performance is attributed to efficient charge separation driven by synergistic interactions among the components. The photocatalyst also exhibited good stability, reusability, and easy recovery. Radical scavenging results indicated that superoxide and hydroxyl radicals play key roles in the degradation process. Additionally, the material showed antibacterial activity against Bacillus subtilis and Escherichia coli and potential for antibiotic removal, highlighting its suitability for solar-driven environmental remediation.