Green Synthesis of Ag-Cu Nanoalloys Using Opuntia ficus-indica
| Autor: | Y. Delgado-Beleño, A. R. Hernández-Martínez, C.E. Martinez-Nuñez, H. Arizpe-Chávez, O. Rocha-Rocha, R. Gámez-Corrales, Ramón A.B. Alvarez, M. Cortez-Valadez, R. Britto-Hurtado, A. Perez-Rodriguez, M. Flores-Acosta |
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| Rok vydání: | 2016 |
| Předmět: |
Chemistry
Nanoparticle Nanotechnology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Electronic Optical and Magnetic Materials law.invention Crystallography Magazine law Materials Chemistry Cluster (physics) Density functional theory Janus Electrical and Electronic Engineering Absorption (chemistry) Surface plasmon resonance 0210 nano-technology Bimetallic strip |
| Zdroj: | Journal of Electronic Materials. 46:802-807 |
| ISSN: | 1543-186X 0361-5235 |
| Popis: | Bimetallic Ag/Cu nanoparticles have been obtained by green synthesis using Opuntia ficus-indica plant extract. Two synthesis methods were applied to obtain nanoparticles with core–shell and Janus morphologies by reversing the order of precursors. Transmission electronic microscopy revealed size of 10 nm and 20 nm for the core–shell and Janus nanoparticles, respectively. Other small particles with size of up to 2 nm were also observed. Absorption bands attributed to surface plasmon resonance were detected at 440 nm and 500 nm for the core–shell and Janus nanoparticles, respectively. Density functional theory predicted a breathing mode type (BMT) located at low wavenumber due to small, low-energy clusters of (AgCu) n with n = 2 to 9, showing a certain correlation with the experimental one (at 220 cm−1). The dependence of the BMT on the number of atoms constituting the cluster is also studied. |
| Databáze: | OpenAIRE |
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