Research Articles
Synthesis of chitosan stabilized silver nanoparticles using gamma ray irradiation and characterization
Authors:
M.A. Hettiarachchi,
Department of Chemistry, University of Kelaniya, LK
P.A.S.R. Wickramarachchi
Department of Chemistry, University of Kelaniya, LK
Abstract
Chitosan stabilized silver nanoparticles (AgNPs) were synthesized using gamma ray irradiation. Four different sample solutions were prepared [1 mM AgNO3 in 0.1% (w/v) chitosan, 1 mM AgNO3 in 0.5% (w/v) chitosan, 2 mM AgNO3 in 0.1% (w/v) chitosan 2 mM AgNO3 in 0.5% (w/v) chitosan] with controls maintaining dose of radiation at 20±2 kGy. The formation of AgNPs were determined by the appearance of the characteristic colour of the AgNPs, using the surface plasmon resonance band (SPR) at 400-432 nm range and the N-H band of the FT-IR spectrum. Stability of the maximum absorption wave lengths of the samples was monitored for three months by UV-visible spectroscopy. The particle size distribution of the stabilized sample, showed a wide distribution of 28-1106 nm. The sample, 2 mM AgNO3 in 0.5% (w/v) chitosan was stable for three months. FT-IR spectroscopic analysis revealed a shifting of N-H stretching vibration band from 3367-3228 cm-1 with the introduction of nanoparticles.
Keywords : Silver nanoparticles; Chitosan; Gamma ray irradiation
DOI: http://dx.doi.org/10.4038/josuk.v6i0.4222
J Sci.Univ.Kelaniya 6 (2011) : 65-75
How to Cite:
Hettiarachchi, M.A. and Wickramarachchi, P.A.S.R., 2012. Synthesis of chitosan stabilized silver nanoparticles using gamma ray irradiation and characterization. Journal of Science of the University of Kelaniya, 6, pp.65–75. DOI: http://doi.org/10.4038/josuk.v6i0.4222
Published on
27 Mar 2012.
Peer Reviewed
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