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International Journal of Polymer Science
Volume 2013, Article ID 436021, 8 pages
http://dx.doi.org/10.1155/2013/436021
Research Article

Totally Ecofriendly Synthesis of Silver Nanoparticles from Aqueous Dissolutions of Polysaccharides

1Universidad Autónoma de Nuevo León, Facultad de Ingeniería Mecánica y Eléctrica, Avenida Universidad S/N, Ciudad Universitaria, 66450 San Nicolás de los Garza, NL, Mexico
2Universidad Autónoma de Nuevo León, Centro de Innovación, Investigación y Desarrollo en Ingeniería y Tecnología, 66450 Apodaca, NL, Mexico

Received 5 June 2013; Revised 6 September 2013; Accepted 7 September 2013

Academic Editor: Shaojun Li

Copyright © 2013 M. A. Garza-Navarro et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

In this contribution, a totally ecofriendly synthesis of silver nanoparticles from aqueous dissolution of polysaccharides is reported. The synthesis of nanoparticles was performed using aqueous dissolutions of silver nitrate (AgNO3) and carboxymethyl-cellulose (CMC) as both reducing and stabilization agent and using different AgNO3 : CMC weight ratios. Resultant yellowish to reddish dispersions were characterized by means of transmission electron microscopy and their related techniques, such as bright field and Z-contrast imaging and electron diffraction, as well as ultraviolet-visible and infrared spectroscopic techniques. The experimental evidence suggests that the morphology and particle size distribution of the silver nanoparticles depend on the AgNO3 : CMC weight ratio. This feature seems to be related to the stabilization given by the CMC matrix, which, according to our experimental findings, is steric in nature. Regarding such experimental evidence, a synthesis mechanism in which CMC acts as stabilizer and reducing agent is proposed.