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Synthesis of silver nanoparticles using reducing agents obtained from natural sources (Rumex hymenosepalus extracts)

Ericka Rodríguez-León1, Ramón Iñiguez-Palomares4*, Rosa Elena Navarro3, Ronaldo Herrera-Urbina2, Judith Tánori3, Claudia Iñiguez-Palomares5 and Amir Maldonado4

Author affiliations

1 Departamento de Investigación en Física, Universidad de Sonora, Hermosillo, Sonora 83000, México

2 Departamento de Ingeniería Química y Metalurgia, Universidad de Sonora, Hermosillo, Sonora 83000, México

3 Departamento de Investigación en Polímeros y Materiales, Universidad de Sonora, Hermosillo, Sonora 83000, México

4 Departamento de Física, Universidad de Sonora, Apartado Postal 1626, Hermosillo, Sonora 83000, México

5 Centro de Investigación en Alimentación y Desarrollo A.C, Hermosillo, Sonora 83304, México

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Citation and License

Nanoscale Research Letters 2013, 8:318  doi:10.1186/1556-276X-8-318

Published: 10 July 2013

Abstract

We have synthesized silver nanoparticles from silver nitrate solutions using extracts of Rumex hymenosepalus, a plant widely found in a large region in North America, as reducing agent. This plant is known to be rich in antioxidant molecules which we use as reducing agents. Silver nanoparticles grow in a single-step method, at room temperature, and with no addition of external energy. The nanoparticles have been characterized by ultraviolet-visible spectroscopy and transmission electron microscopy, as a function of the ratio of silver ions to reducing agent molecules. The nanoparticle diameters are in the range of 2 to 40 nm. High-resolution transmission electron microscopy and fast Fourier transform analysis show that two kinds of crystal structures are obtained: face-centered cubic and hexagonal.

Keywords:
Silver nanoparticles; Rumex hymenosepalus; Antioxidants; Electron microscopy; Green synthesis