Green Synthesis of Silver and Gold Nanoparticles via Cactus Igneous Extract for Catalytic Reduction of Organic Dyes and Antibacterial Activity 0 1
DOI:
https://doi.org/10.60787/sjhrs.vol1no1.11Keywords:
gold nanoparticles, green synthesis, cactus igneous, silver nanoparticles, catalytic activitiesAbstract
The growing demand for sustainable nanomaterial synthesis has exposed significant limitations in conventional physical and chemical methods, including the use of toxic reagents, high energy consumption, and costly processing routes. In this study, a simple, rapid, and environmentally friendly green synthesis approach is reported for the fabrication of silver (AgNPs) and gold nanoparticles (AuNPs) using cactus plant extract as a natural reducing and stabilizing agent. The biosynthesized nanoparticles were systematically characterized using ultraviolet–visible (UV–Vis) spectroscopy, dynamic light scattering (DLS), selected area electron diffraction (SAED), energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), and atomic force microscopy (AFM). UV–Vis analysis confirmed nanoparticle formation through characteristic surface plasmon resonance peaks at 430–450 nm for AgNPs and 490–550 nm for AuNPs. DLS measurements revealed smaller hydrodynamic diameters for AgNPs (34.26–41.14 nm) compared to AuNPs (46.26–70.29 nm), while zeta potential values ranging from−13to−21mV indicated good colloidal stability. Furthermore, the synthesized nanoparticles exhibited notable catalytic efficiency in the degradation of methylene blue, demonstrating their potential for environmental remediation applications. The present work highlights the novelty and effectiveness of cactus-mediated green synthesis as a cost-effective, scalable, and sustainable route for producing functional metal nanoparticles with promising environmental applications.
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