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Journal of Nanotechnology
Volume 2013 (2013), Article ID 578684, 9 pages
http://dx.doi.org/10.1155/2013/578684
Research Article

Synthesis by Microwaves of Bimetallic Nano-Rhodium-Palladium

1Laboratorio Nacional de Nanotecnología, Centro de Investigación en Materiales Avanzados, S.C., Avenida Miguel de Cervantes 120, 31109 Chihuahua, CHIH, Mexico
2Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Apartado Postal 70-360, 04510 México, DF, Mexico
3Facultad de Ciencias, Ciudad Universitaria, Universidad 3000, Circuito Exterior S/N, 04510 México, DF, Mexico

Received 29 May 2013; Revised 31 August 2013; Accepted 12 September 2013

Academic Editor: Jorge Seminario

Copyright © 2013 M. Ugalde 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.

Abstract

An improved acrylamide sol-gel technique using a microwave oven in order to synthesize bimetallic Rh-Pd particles is reported and discussed. The synthesis of Pd and Rh nanoparticles was carried out separately. The polymerization to form the gel of both Rh and Pd was carried out at 80°C under constant agitations. The method chosen to prepare the Rh and Pd xerogels involved the decomposition of both gels. The process begins by steadily increasing the temperature of the gel inside a microwave oven (from 80°C to 170°C). In order to eliminate the by-products generated during the sol-gel reaction, a heat treatment at a temperature of 1000°C for 2 h in inert atmosphere was carried out. After the heat treatment, the particle size increased from 50 nm to 200 nm, producing the bimetallic Rh-Pd clusters. It can be concluded that the reported microwave-assisted, sol-gel method was able to obtain nano-bimetallic Rh-Pd particles with an average size of 75 nm.