期刊
JOURNAL OF EXPERIMENTAL NANOSCIENCE
卷 5, 期 2, 页码 169-179出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/17458080903383324
关键词
silver nanoparticles; chitosan; antimicrobial; -irradiation
类别
资金
- VINAGAMMA Center, VAEC [CS/08/07-02]
Radiation-induced synthesis of colloidal silver nanoparticles (Ag-NPs) using chitosan (CTS) as a stabiliser and free radical scavenger is feasible and satisfiable to green method. The conversion dose (Ag+ into Ag0) was determined by UV-Vis spectroscopy and Ag-NPs size was characterised by transmission electron microscopy. The average diameter of Ag-NPs was smaller than 10 nm with narrow size distribution and the colloidal Ag-NPs have good stability for a long time of storage. The effect of several parameters, such as pH, Ag+ and CTS concentration and molecular weight of CTS on Ag-NPs size was also investigated. Ag-NPs of 7 nm exhibited highly antimicrobial effect. The inhibitory efficiency of Ag-NPs for Staphylococcus aureus was more than 99.9% at 5 ppm and the effective dose (ED50) of inhibition for Corticium salmonicolor was of 27.2 ppm.
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