title: Synthesis of silver nanoparticles using reducing agents obtained from natural sources (Rumex hymenosepalus extracts).
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.
authors.affiliation: Departamento de Investigación en Física, Universidad de Sonora, Hermosillo, Sonora 83000, México.
authors.forename: Ericka
authors.initials: E
authors.lastname: Rodríguez-León
authors.affiliation: Departamento de Física, Universidad de Sonora, Apartado Postal 1626, Hermosillo, Sonora 83000, México.
authors.forename: Ramón
authors.initials: R
authors.lastname: Iñiguez-Palomares
authors.affiliation: Departamento de Investigación en Polímeros y Materiales, Universidad de Sonora, Hermosillo, Sonora 83000, México.
authors.forename: Rosa Elena
authors.initials: RE
authors.lastname: Navarro
authors.affiliation: Departamento de Ingeniería Química y Metalurgia, Universidad de Sonora, Hermosillo, Sonora 83000, México.
authors.forename: Ronaldo
authors.initials: R
authors.lastname: Herrera-Urbina
authors.affiliation: Departamento de Investigación en Polímeros y Materiales, Universidad de Sonora, Hermosillo, Sonora 83000, México.
authors.forename: Judith
authors.initials: J
authors.lastname: Tánori
authors.affiliation: Centro de Investigación en Alimentación y Desarrollo A.C, Hermosillo, Sonora 83304, México.
authors.forename: Claudia
authors.initials: C
authors.lastname: Iñiguez-Palomares
authors.affiliation: Departamento de Física, Universidad de Sonora, Apartado Postal 1626, Hermosillo, Sonora 83000, México.
authors.forename: Amir
authors.initials: A
authors.lastname: Maldonado
keywords: Antioxidants; Electron microscopy; Green synthesis; Rumex hymenosepalus; Silver nanoparticles