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Journal of Nanomaterials
Volume 2011, Article ID 374096, 5 pages
Research Article

Synthesis of Ag-Au Nanoparticles by Galvanic Replacement and Their Morphological Studies by HRTEM and Computational Modeling

1Materials Research and Technology Institute, UT-El Paso, 500W Univesity Ave., Burges Hall Rm. 303, El Paso, TX 79902, USA
2Departamento de Física y Matemáticas, Universidad Autónoma de Ciudad Juárez, Cd. Juárez, Chihuahua C.P. 32300, Mexico
3Microelectronics Research Center, University of Texas at Austin, Austin, TX 78758, USA
4Departamento de Ciencias y Tecnología, Universidad Metropolitana, San Juan, PR 00928, Puerto Rico

Received 13 October 2010; Revised 22 November 2010; Accepted 27 December 2010

Academic Editor: Shaogang Hao

Copyright © 2011 Manuel Ramos et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Bimetallic nanoparticles are important because they possess catalytic and electronic properties with potential applications in medicine, electronics, and chemical industries. A galvanic replacement reaction synthesis has been used in this research to form bimetallic nanoparticles. The complete description of the synthesis consists of using the chemical reduction of metallic silver nitrite (AgNO3) and gold-III chloride hydrate (HAuCl) salt precursors. The nanoparticles display round shapes, as revealed by high-resolution transmission electron microscope (HRTEM). In order to better understand the colloidal structure, it was necessary to employ computational models which involved the simulations of HRTEM images.