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Microwave-assisted green synthesis of Ag nanoparticles using leaves of Melia Dubia (Neem) and its antibacterial activities


Mudhafar, Mustafa and Zainol, Ismail and Jaafar, Che Nor Aiza and H. A., Alsailawi and Majhool, Alhussein Arkan (2020) Microwave-assisted green synthesis of Ag nanoparticles using leaves of Melia Dubia (Neem) and its antibacterial activities. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 65 (1). 121 - 129. ISSN 2289 - 7879


The biosynthesis methods of nanosilver are of interest due to its low cost and environmental friendliness compared with chemical and physical methods. This study will conduct a green synthesis of nanosilver by decreasing the AgNO3 using leaf extract with the presence of stabilized microwave irradiation and collagen. Melia dubia leaves, and hydrolyzed fish scale collagen were utilized as reducing and stabilizing agents, respectively. Ag nanoparticles (AgNPs) were synthesized and characterized via Uv-Vis spectroscopy, scanning electron microscope (SEM) that attached with energydispersive X-ray, X-ray diffraction (XRD), and antibacterial activities. Results showed that the spherical shape of AgNPs was formed with particle size ranging from 72 nm and 100 nm. UV–vis analysis revealed that the absorbance peak was observed at 446 nm, which corresponded to AgNPs. XRD analysis confirmed the natural crystalline of AgNPs with a particle size of 84.8 nm. The antimicrobial analysis was conducted using Staphylococcus aureus and Escherichia coli as Gram-positive and -negative bacteria, respectively. Results showed the inhibition zone against both bacteria, which indicated excellent antimicrobial properties of the samples.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
Publisher: Akademia Baru Publishing
Keywords: Microwave-assisted; AgNPs; Melia dubia (neem); Antibacterial
Depositing User: Mohamad Jefri Mohamed Fauzi
Date Deposited: 16 Nov 2021 03:20
Last Modified: 16 Nov 2021 03:20
URI: http://psasir.upm.edu.my/id/eprint/86759
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