Silver nanoparticles; synchrotron X-ray radiation; gamma irradiation; electron beam irradiati
1Radiation Technology Development Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
2Isotope Application Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
3Indus Synchrotrons Utilization Division, Raja Ramanna Centre for Advanced Technology, Indore 452013, India
4Industrial Applications and Chemistry Section, Division of Physical and Chemical Sciences, Department of Nuclear Sciences and Applications, International Atomic Energy Agency, Wagramer Str. 5, A-1400, Vienna, Austria
Adv. Mater. Lett., 2013, Ion Beam Special Issue, 4 (6), pp 458-463
Publication Date (Web): Mar 16, 2013
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A one-pot synthesis method has been developed for preparation of silver nanoparticles in aqueous poly (vinyl pyrrolidone) (PVP) solution by synchrotron X-ray radiation. The hydrated electrons (eaq-) and hydrogen atom radical (H·), products of radiolysis of water molecules by synchrotron X-rays brings about the reduction of the metal ions, resulting in homogeneous nucleation and nanoparticle formation. The nanoparticles were characterized by UV-visible spectroscopy and TEM analysis. A comparative study has been done to know the effectiveness of this synthesis method with that of gamma and EB- irradiation methods. In gamma radiation method the nanoparticle size obtained was ~8nm, whereas in synchrotron X-ray irradiation 10-15nm particles were obtained. Smaller size particles with narrow size distribution were obtained by g-radiolysis and EB-irradiation than those obtained by X-ray radiolysis. The effects of different experimental parameters, such as concentration of Ag+, PVP concentration on nanoparticle formation were studied.
Silver nanoparticles, synchrotron X-ray radiation, gamma irradiation, electron beam irradiation, PVP.