Synthesis and antimicrobial effects of colloidal silver nanoparticles in chitosan byγ-irradiation
Open Access
- 24 March 2010
- journal article
- research article
- Published by Taylor & Francis Ltd in Journal of Experimental Nanoscience
- Vol. 5 (2), 169-179
- https://doi.org/10.1080/17458080903383324
Abstract
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.Keywords
This publication has 22 references indexed in Scilit:
- Preparation of colloidal silver nanoparticles in poly(N-vinylpyrrolidone) by γ-irradiationJournal of Experimental Nanoscience, 2008
- Synthesis of silver nanoparticles supported on silica aerogel using gamma radiolysisRadiation Physics and Chemistry, 2007
- Synthesis of silver nanoparticles by γ-ray irradiation in acetic water solution containing chitosanRadiation Physics and Chemistry, 2007
- A New Composition of Nanosized Silica-Silver for Control of Various Plant DiseasesThe Plant Pathology Journal, 2006
- Silver Nanoparticles from Ultrasonic Spray Pyrolysis of Aqueous Silver NitrateAerosol Science and Technology, 2005
- Radiolysis of silver ion solutions in ethylene glycol: solvated electron and radical scavenging yieldsRadiation Physics and Chemistry, 2005
- Synthesis of polysaccharide-stabilized gold and silver nanoparticles: a green methodCarbohydrate Research, 2004
- Polymer stabilized silver nanoparticles: A photochemical synthesis routeJournal of Materials Science, 2004
- Electrochemical Synthesis of Silver Nanoparticles under Protection of Poly(N-vinylpyrrolidone)The Journal of Physical Chemistry B, 2003
- Synthesis of nanosized silver particles by chemical reduction methodMaterials Chemistry and Physics, 2000