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Vibrational properties of gold nanoparticles obtained by green synthesis

2016; Elsevier BV; Volume: 84; Linguagem: Inglês

10.1016/j.physe.2016.04.024

1873-1759

Ramón A.B. Álvarez, M. Cortez-Valadez, L.O. Bueno, R. Britto Hurtado, O. Rocha‐Rocha, Y. Delgado‐Beleño, C.E. Martínez-Núñez, Luis Ivan Serrano-Corrales, H. Arizpe-Chávez, M. Flores-Acosta,

Botanical Research and Applications

This study reports the synthesis and characterization of gold nanoparticles through an ecological method to obtain nanostructures from the extract of the plant Opuntia ficus-indica. Colloidal nanoparticles show sizes that vary between 10–20 nm, and present various geometric morphologies. The samples were characterized through optical absorption, Raman Spectroscopy and Transmission Electron Microscopy (TEM). Additionally, low energy metallic clusters of Aun (n=2–20 atoms) were modeled by computational quantum chemistry. The theoretical results were obtained with Density Functional Theory (DFT). The predicted results of Au clusters show a tendency and are correlated with the experimental results concerning the optical absorption bands and Raman spectroscopy in gold nanoparticles.