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Abstract

The present research focuses on the synthesis and comparative analysis of zinc oxide nanoparticles (ZnO NPs) produced through two distinct methodologies: a traditional sol-gel procedure and a sustainable green synthesis route. The green synthesis approach utilized Laurus Nobilis leaf extract as a natural reducing and stabilizing agent, offering an eco-friendly alternative to conventional chemical synthesis. To evaluate the structural, optical, and morphological properties of the resulting nanoparticles, both sets of samples were characterized using UV-Vis spectroscopy, XRD, energy-dispersive X-ray spectroscopy (EDX), FTIR, and Field Emission Scanning Electron Microscopy (FESEM). The XRD patterns confirmed the successful formation of a hexagonal wurtzite structure in both samples, indicating high crystallinity. The average crystalline size was calculated to be 25.77 nm for the sol-gel approach and 18.46 nm for the green synthesis. UV-Vis spectroscopy was employed to investigate the optical characteristics, revealing average band gaps of 2.84 eV for the sol-gel method and 2.81 eV for the green method. Furthermore, EDX characterization demonstrated that the ZnO NPs possessed high elemental purity; the sol-gel method resulted in 80.9% zinc and 19.1% oxygen, while the green method yielded a composition of 81% zinc and 19% oxygen. Morphological analysis via FESEM micrographs revealed a significant difference in particle shape: the sol-gel method produced nano-rice or nano-rod formations with an average size of 173 nm, whereas the green technique produced predominantly spherical nanoparticles with an average size of 151 nm. These results highlight the effectiveness of both methods in producing high-quality metal oxide nanoparticles with controllable physical properties.

Keywords

Characterization, Green synthesis, Laurus nobilis, Sol-gel method, ZnO nanoparticles

Subject Area

Physics

Article Type

Article

First Page

2143

Last Page

2154

Creative Commons License

Creative Commons Attribution 4.0 International License
This work is licensed under a Creative Commons Attribution 4.0 International License.

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