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Nanoscale Res Lett. 2013 Jul 10;8(1):318. doi: 10.1186/1556-276X-8-318. eCollection 2013.

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

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Departamento de Investigación en Física, Universidad de Sonora, Hermosillo, Sonora 83000, México.
Departamento de Física, Universidad de Sonora, Apartado Postal 1626, Hermosillo, Sonora 83000, México.
Departamento de Investigación en Polímeros y Materiales, Universidad de Sonora, Hermosillo, Sonora 83000, México.
Departamento de Ingeniería Química y Metalurgia, Universidad de Sonora, Hermosillo, Sonora 83000, México.
Centro de Investigación en Alimentación y Desarrollo A.C, Hermosillo, Sonora 83304, México.


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.


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

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