Green synthesis of nano CeO2 using cleistocalyx operculatus leaf extract
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https://doi.org/10.54939/1859-1043.j.mst.101.2025.95-101Keywords:
Green synthesis; CeO2 nanoparticles; Cleistocalyx operculatus; Polyphenol; Flavanol.Abstract
This study explores the green synthesis of CeO2 nanoparticles using an extract from Cleistocalyx operculatus leaves, a traditional medicinal plant known for its high antioxidant content. A detailed solvent optimization process identified ethanol-water (1:1) as the ideal medium for extracting the maximum amount of polyphenols and flavanols, essential for reducing and stabilizing nanoparticles. The morphology, structure, and physicochemical properties of the synthesized nanoparticles were analyzed using advanced techniques such as FE-SEM, EDX, XRD, FT-IR, UV-Vis, BET, and Zeta potential analysis. The CeO2 nanoparticles exhibited a fluorite cubic crystal structure with a crystal size of 12.04 nm, as determined by XRD. The nanoparticles demonstrated a high surface area (49.71 m²/g), stable zeta potential (-42 mV), and optical and functional properties characteristic of CeO2. These results underscore the potential of green synthesis as an eco-friendly, cost-effective alternative for nanoparticle production.
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