Preparation, characterization, and antibacterial activity of gamma-irradiated silver nanoparticles in aqueous gelatin

Colloidal silver nanoparticles (Ag-NPs) were obtained through gamma-irradiation of aqueous solutions containing AgNO3 and gelatin as a silver source and stabilizer, respectively. The absorbed dose of gamma-irradiation influences the particle diameter of the Ag-NPs, as evidenced from surface plasmon...

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Bibliographic Details
Main Author: Darroudi, Majid (author)
Other Authors: Ahmad, Mansor B. (author), Hakimi, Mohammad (author), Zamiri, Reza (author), Zak, Ali Khorsand (author), Hosseini, Hasan Ali (author), Zargar, Mohsen (author)
Format: article
Language:eng
Published: 1000
Subjects:
GOLD NANOPARTICLES
GREEN SYNTHESIS
CLUSTERS
PARTICLES
Online Access:http://hdl.handle.net/10773/20529
Country:Portugal
Oai:oai:ria.ua.pt:10773/20529
Description
Summary:Colloidal silver nanoparticles (Ag-NPs) were obtained through gamma-irradiation of aqueous solutions containing AgNO3 and gelatin as a silver source and stabilizer, respectively. The absorbed dose of gamma-irradiation influences the particle diameter of the Ag-NPs, as evidenced from surface plasmon resonance (SPR) and transmission electron microscopy (TEM) images. When the gamma-irradiation dose was increased (from 2 to 50 kGy), the mean particle size was decreased continuously as a result of gamma-induced Ag-NPs fragmentation. The antibacterial properties of the Ag-NPs were tested against Methicillin-resistant Staphylococcus aureus (MRSA) (Gram-positive) and Pseudomonas aeruginosa (P.a) (Gram-negative) bacteria. This approach reveals that the gamma-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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