γ-ray assisted synthesis of silver nanoparticles in chitosan solution and the antibacterial properties
Huang, Nay Ming and Radiman, Shahidan and Lim, Hong Ngee and Khiew, Poi Sim and Chiu, Wee Siong and Lee, K. H. and Ahmad, Syahida and Hashim, Rauzah and Chia, Chin Hua (2009) γ-ray assisted synthesis of silver nanoparticles in chitosan solution and the antibacterial properties. Chemical Engineering Journal, 155 (1-2). pp. 499-507. ISSN 1385-8947; ESSN: 1873-3212
In the present study, chitosan had been utilized as a “green” stabilizing agent for the synthesis of spherical silver nanoparticles in the range of 5–30 nm depending on the percentage of chitosan used (0.1, 0.5, 1.0 and 2.0 wt%) under γ-irradiation. X-ray diffractometer identified the nanoparticles as pure silver having face-centered cubic phase. Ultraviolet–visible spectra exhibited the influence of γ-irradiation total absorbed dose and chitosan concentration on the yield of silver nanoparticles. The antibacterial properties of the silver nanoparticles were tested against Methicillin-resistant Staphylococcus aureus (MRSA) (gram-positive) and Aeromonas hydrophila (gram-negative) bacteria. This work provides a simple and “green” method for the synthesis of highly stable silver nanoparticles in aqueous solution with good antibacterial property.
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