Abstract
The plant-assisted synthesis method was employed to synthesize cobalt oxide (Co3O4) nanoparticles using the Ziziphus jujuba (Z. jujuba) (Jujube, Chinese Date, and Red Date) leaves and Capparis decidua (C. decidua) (Karira, Kair, and Bare Caper) stem. The Co3O4 NPs were characterized by various techniques. The ultraviolet-visible (UV-Vis) spectrum disclosed that Z. jujuba-based Co3O4 NPs had absorption peaks at 347, 384, and 423 nm. Whereas the C. decidua-based Co3O4 NPs showed absorption peaks at 327, 376, and 402 nm. The Fourier-transform infrared (FTIR) spectrum showed the engagement of phytochemicals in reducing Co3O4 NPs. Scanning electron microscopy (SEM) with energy-dispersive X-ray spectroscopy (EDX) study confirmed that the Co3O4 NPs varied in shape, ranging from 10 to 60 nm. The X-ray diffraction (XRD) analysis verified a cubic spinel Cobalt (II, III) oxide (Co3O4) structure, with sizes between 10 and 20 nm. The Co3O4 NPs presented significant antioxidant activity in a concentration-dependent mode, comparable to the standard ascorbic acid. The IC50 values were 167.84 μ g/mL for Z. jujuba-based Co3O4 NPs, 177.62 μ g/mL for C. decidua-based Co3O4 NPs, and 204.02 μ g/mL for standard ascorbic acid. The study confirmed that plant extracts can be used for synthesizing Co3O4 NPs, having potential applications in the environmental field.
Recommended Citation
Khan, Muhammad Yaseen
(2026)
"Plant-Assisted Synthesis of Cobalt Oxide (Co3O4) Nanoparticles Using Ziziphus jujuba and Capparis decidua Extracts and Evaluation of Antioxidant Activity,"
Journal of Applied Sciences and Nanotechnology: Vol. 6:
Iss.
2, Article 5.
DOI: https://doi.org/10.53293/2788-6867.1180
Available at:
https://jasn.uotechnology.edu.iq/journal/vol6/iss2/5
DOI
10.53293/2788-6867.1180
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