Citation
Darroudi, Majid and Ahmad, Mansor and Hakimi, Mohammad and Zamiri, Reza and Zak, Ali Khorsand and Hosseini, Hasan Ali and Zargar, Mohsen
(2013)
Preparation, characterization, and antibacterial activity of γ-irradiated silver nanoparticles in aqueous gelatin.
International Journal of Minerals, Metallurgy, and Materials, 20 (4).
pp. 403-409.
ISSN 1674-4799; ESSN: 1869-103X
Abstract
Colloidal silver nanoparticles (Ag-NPs) were obtained through γ-irradiation of aqueous solutions containing AgNO3 and gelatin as a silver source and stabilizer, respectively. The absorbed dose of γ-irradiation influences the particle diameter of the Ag-NPs, as evidenced from surface plasmon resonance (SPR) and transmission electron microscopy (TEM) images. When the γ-irradiation dose was increased (from 2 to 50 kGy), the mean particle size was decreased continuously as a result of γ-induced Ag-NPs fragmentation. The antibacterial properties of the Ag-NPs were tested against Methicillinresistant Staphylococcus aureus (MRSA) (Gram-positive) and Pseudomonas aeruginosa (P.a) (Gram-negative) bacteria. This approach reveals that the γ-irradiation-mediated method is a promising simple route for synthesizing highly stable Ag-NPs in aqueous solutions with good antibacterial properties for different applications.
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