Microwave-assisted synthesis of Pd nanoparticles supported on Fe3O4, Co3O4, and Ni(OH)2 nanoplates and catalysis application for CO oxidation

  • Hany A. Elazab
  • Sherif Moussa
  • B. Frank Gupton
  • M. Samy El-Shall
Research Paper


In this paper, we report a simple, versatile, and rapid method for the synthesis of Pd nanoparticle catalysts supported on Fe3O4, Co3O4, and Ni(OH)2 nanoplates via microwave irradiation. The important advantage of microwave dielectric heating over convective heating is that the reactants can be added at room temperature (or slightly higher temperatures) without the need for high-temperature injection. Furthermore, the method can be used to synthesize metal nanoparticle catalysts supported on metal oxide nanoparticles in one step. We also demonstrate that the catalyst-support interaction plays an important role in the low temperature oxidation of CO. The current results reveal that the Pd/Co3O4 catalyst has particularly high activity for CO oxidation as a result of the strong interaction between the Pd nanoparticles and the Co3O4 nanoplates. Optimizations of the size, composition, and shape of these catalysts could provide a new family of efficient nanocatalysts for the low temperature oxidation of CO.


CO oxidation Microwave synthesis Pd nanoparticles Magnetite Fe3O4 nanoparticles Hexagonal Co3O4 nanoplates Hexagonal Ni(OH)2 nanoplates 



We thank the National Science Foundation (CHE-0911146 and OISE-1002970) for the support of this work.

Supplementary material

11051_2014_2477_MOESM1_ESM.doc (65.1 mb)
Figure S1 (a-e): TEM images of Fe3O4 and Ni(OH)2 nanoplates, and 50 wt% Pd nanoparticles supported on Fe3O4 and Ni(OH)2 nanoplates. (DOC 66698 kb)


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Copyright information

© Springer Science+Business Media Dordrecht 2014

Authors and Affiliations

  • Hany A. Elazab
    • 2
  • Sherif Moussa
    • 1
  • B. Frank Gupton
    • 1
    • 2
  • M. Samy El-Shall
    • 1
    • 2
    • 3
  1. 1.Department of ChemistryVirginia Commonwealth UniversityRichmondUSA
  2. 2.Department of Chemical EngineeringVirginia Commonwealth UniversityRichmondUSA
  3. 3.Department of Chemistry, Faculty of ScienceKing Abdulaziz UniversityJeddahSaudi Arabia

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