Stevia rebaudiana leaf extract mediated green synthesis of cerium oxide nanoparticles for antibacterial activity and photocatalytic degradation of tetracycline

Stevia rebaudiana leaf extract mediated green synthesis of cerium oxide nanoparticles for antibacterial activity and photocatalytic degradation of tetracycline

Cerium oxide nanoparticles (CeO2-NPs) are multifunctional oxide metal nanoparticles that have been considered by many due to their unique properties, including antimicrobial, antifungal, semiconducting, and photocatalytic activity. In this research, CeO2-NPs were synthesized using a natural sweetene...

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Bibliographic Details
Main Authors: Mohammad Malakootian, Seyedeh Nastaran Asadzadeh, Mohsen Mehdipoor, Davood Kalantar-Neyestanaki, Nima Firouzeh
Format: Article
Language:English
Published: Elsevier 2024-01-01
Series:Desalination and Water Treatment
Subjects:
Cerium oxide
Biosynthesis
Antibacterial activity
Photo degradation
Stevia rebaudiana
Tetracycline
Online Access:http://www.sciencedirect.com/science/article/pii/S1944398624001474
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Summary:Cerium oxide nanoparticles (CeO2-NPs) are multifunctional oxide metal nanoparticles that have been considered by many due to their unique properties, including antimicrobial, antifungal, semiconducting, and photocatalytic activity. In this research, CeO2-NPs were synthesized using a natural sweetener glycoside in the aqueous crude extract of Stevia rebaudiana that acted as an excellent bio-reductant. The prepared nanoparticles were further characterized by Raman spectroscopy, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), and field emission-scanning electron microscopy (FE-SEM). The FE-SEM results confirmed that the CeO2-NPs were nano-size (10–50 nm). The antibacterial activity of CeO2-NPs against Pseudomonas aeruginosa and Enterococcus faecalis has shown that the Minimum Inhibitory Concentration (MIC) was 6.25 and 12.5 μg/mL and Minimum Bactericidal Concentration (MBC) were 12.5 and 25 μg/mL respectively. In the presence of CeO2-NPs (under optimal conditions: catalyst dosage = 0.75 g/L, TC concentration = 5 mg/L, pH=10), about 80.68% of tetracycline (TC) was degraded after 45 min UV-irradiation that it is indicative of the acceptable photocatalytic property of CeO2-NPs.
ISSN:1944-3986

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