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Erschienen in:
01.12.2009
Studies on the growth and stability of silver nanoparticles synthesized by electron beam irradiation
Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 12/2009
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Abstract
Stable Ag nanoparticles have been synthesized by irradiating an aqueous solution of AgNO3 and Poly-vinyl alcohol (PVA) with 8 MeV electrons from a Microtron. The rate of formation of nanoparticles could be controlled by changing either the irradiation dosage or the relative concentration of the precursors. The size, shape, and the rate of formation of the nanoparticles depend on the final dosage, as well as the weight ratio of AgNO3 and PVA. The formation of Ag nanoparticles and their size were established through UV–Vis spectroscopy and Transmission electron microscopy (TEM) analysis, respectively. Increasing the irradiation dosage seem to favour the formation of polygonal nanostructures. Differential scanning calorimetry (DSC) measurements show that there exists a strong interaction between the PVA matrix and the Ag nanoparticles.