Green synthesis of ZnO nanoparticles using guava leaf extract and potential for biomedical applications
Keywords:
Zinc oxide; Guava leaf; XRD; Nanoparticles; SEM; BiosynthesisAbstract
The conventional ways of creating metal oxide nanoparticles in biomedicine and pharmaceuticals have been replaced by environmentally friendly alternatives that do not require the use of chemical stabilizing and reducing agents. ZnO nanoparticles were synthesized in this study using Psidium guajava, a valuable herbal plant with medicinal potential that is commonly known as guava. In pharmaceutical formulations, bioactive components derived from medicinal plants are essential because they function as capping and reducing agents for metal ions during the creation of nanoparticles. Zinc oxide nanoparticles are produced when the phytochemicals in guava leaf extract undergo reduction/oxidation. The experiment was repeated with different precursor concentrations (3g, 4g, 5g, and 6g) to examine the effect of precursor molarity on the physical properties of the nanoparticles. Furthermore, a comparison was made between the average particle size of ZnO nanoparticles produced chemically and those produced through biosynthesis. X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDS), and ultraviolet-visible spectroscopy (UV-Vis) were used to analyze the produced nanoparticles.
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