Moringa oleifera Extract-mediated Green Synthesis of Highly Active Ag@ZnO Nanohybrids for Azo Dye Removal
J. Environ. Nanotechnol., Volume 15, No 2 (June 2026) pp. 205-216
Abstract
In this work, the efficacy of Moringa oleifera flower extract-mediated synthesis of rod-like silver-decorated zinc oxide (Ag@ZnO) nanohybrids for the removal of the organic dye pollutant methyl orange (MO) from aqueous solutions was investigated. The nanohybrid was characterized using FE-SEM/EDX, FT-IR, XRD, and UV–Vis spectroscopic techniques. The nanohybrid effectively degraded methyl orange (MO) in the presence of NaBH4 at room temperature. The results indicated that MO degradation efficiencies of 99.7%, 96.7%, and 97.2% were achieved within 10, 13, and 16 min, respectively. The enhanced performance was attributed to the synergistic effect between Ag and ZnO nanoparticles, which provided more active sites for improved catalytic degradation. Notably, the Ag@ZnO nanohybrid was synthesized via a green method using M. oleifera flower extracts without stabilizing agents, suggesting a sustainable approach. The findings highlight the potential of the nanohybrid for applications in environmental remediation and wastewater treatment, although further research is needed to fully explore its capabilities.
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