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<p>This study reports the synthesis of zinc oxide nanoparticles (ZnO NPs) <i>via</i> thermal decomposition and their comprehensive characterization for photocatalytic and antimicrobial applications. Basic zinc carbonate was calcined at 600&#xa0;°C to obtain ZnO NPs with enhanced physicochemical properties. The nanoparticles were characterized using UV–visible spectroscopy, scanning electron microscopy (SEM), energy-dispersive X-ray analysis (EDX), Fourier-transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD). Photocatalytic performance was evaluated through the degradation of methylene blue (MB) and textile effluent under solar irradiation, optimizing parameters such as pH, catalyst dosage, dye concentration, contact time, and recyclability. Maximum MB degradation (99.53%) was achieved at neutral pH with a 40&#xa0;mg catalyst dose, 10&#xa0;µg mL<sup>−1</sup> dye concentration, and 40&#xa0;min contact time. Textile effluent degradation reached 92.67% with an 88.73% COD reduction using 250&#xa0;mg catalyst dose for 100 mL effluent for 120&#xa0;min under sunlight. Antibacterial assays against Xanthomonas campestris (Xac), the causal agent of bacterial blight in grapevine, revealed strong inhibition at 0.25% ZnO NP concentration. Overall, the results highlight ZnO NPs as a cost-effective, eco-friendly, and scalable solution for both environmental remediation and plant disease management.</p>

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Thermally synthesized zinc oxide nanoparticles: applications in wastewater remediation and grapevine bacterial blight management

  • 期刊论文

  • 发表日期：

    2025年11月13日

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  • Rajendra S. Patil,
  • Vinod S. Nandre,
  • Mithil Mahale,
  • Kisan Kodam,
  • Sagar N. Mhetre,
  • Akash P. Jadhav,
  • Chandrakala P. Hase,
  • Pramod N. Kamble,
  • D. Bhagawan

摘要

This study reports the synthesis of zinc oxide nanoparticles (ZnO NPs) via thermal decomposition and their comprehensive characterization for photocatalytic and antimicrobial applications. Basic zinc carbonate was calcined at 600 °C to obtain ZnO NPs with enhanced physicochemical properties. The nanoparticles were characterized using UV–visible spectroscopy, scanning electron microscopy (SEM), energy-dispersive X-ray analysis (EDX), Fourier-transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD). Photocatalytic performance was evaluated through the degradation of methylene blue (MB) and textile effluent under solar irradiation, optimizing parameters such as pH, catalyst dosage, dye concentration, contact time, and recyclability. Maximum MB degradation (99.53%) was achieved at neutral pH with a 40 mg catalyst dose, 10 µg mL−1 dye concentration, and 40 min contact time. Textile effluent degradation reached 92.67% with an 88.73% COD reduction using 250 mg catalyst dose for 100 mL effluent for 120 min under sunlight. Antibacterial assays against Xanthomonas campestris (Xac), the causal agent of bacterial blight in grapevine, revealed strong inhibition at 0.25% ZnO NP concentration. Overall, the results highlight ZnO NPs as a cost-effective, eco-friendly, and scalable solution for both environmental remediation and plant disease management.