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Journal of Nanoparticle Research

, Volume 13, Issue 12, pp 6591–6601 | Cite as

Gold, silver, and palladium nanoparticle/nano-agglomerate generation, collection, and characterization

  • Sunita R. Boddu
  • Veera R. Gutti
  • Tushar K. Ghosh
  • Robert V. Tompson
  • Sudarshan K. Loyalka
Research Paper

Abstract

Generation, collection, and characterization of gold, silver, and palladium nanoparticles and nano-agglomerates (collectively “nanoparticles”) have been explored. The nanoparticles were generated with a spark aerosol generator (Palas GFG-1000). They were collected using a deposition cell under diffusion and thermophoresis. The shapes and sizes of the deposited particles were measured using transmission electron microscopy (TEM). TEM images showed that the particles were in the range of 8–100 nm in diameter, and their shapes varied from nearly spherical to highly non-spherical. Thermophoresis enhanced the deposition of nanoparticles (over the diffusive or the isothermal deposition) in all cases. Further, the size distributions of the nanoparticles generated in the gas phase (aerosol) were measured using a scanning mobility particle sizer (SMPS 3080, TSI) spectrometer. The SMPS results show that an increase in the spark frequency of the generator shifted the size distributions of the nanoparticles to larger diameters, and the total particle mass production rate increased linearly with increase in the spark frequency. The computational fluid dynamics code Fluent (Ansys) was used to model the flow in the deposition cell, and the computed results conform to the observations.

Keywords

Nanoparticle Nano-agglomerate Spark generation Deposition Cancer treatment Thermophoresis Nanomedicine 

Notes

Acknowledgments

This research has been supported by the following grants from the Department of Energy: Nuclear Energy Research Initiative (NERI-C; Grant # DE-FG07-07ID14892), Innovations in Nuclear Education and Infrastructure (INIE; Grant # DE-FG07-03ID14531), and Global Nuclear Energy Partnership (GNEP; grant DE-FG07-07ID14851).

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Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • Sunita R. Boddu
    • 1
  • Veera R. Gutti
    • 1
  • Tushar K. Ghosh
    • 1
  • Robert V. Tompson
    • 1
  • Sudarshan K. Loyalka
    • 1
  1. 1.Nuclear Science & Engineering Institute and Particulate Systems Research CenterUniversity of MissouriColumbiaUSA

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