Gold, silver, and palladium nanoparticle/nano-agglomerate generation, collection, and characterization
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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.
KeywordsNanoparticle Nano-agglomerate Spark generation Deposition Cancer treatment Thermophoresis Nanomedicine
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).
- Ache HJ, Baetsle LH, Bust RP, Nechaev AF, Popik VP, Ying Y (1989) Feasibility of separation and utilization of ruthenium, rhodium and palladium from high level waste. IAEA, technical report series No. 308, ViennaGoogle Scholar
- Boddu S, Gutti VR, Meyer RM, Tompson RV, Loyalka SK (2011) Carbon nanoparticle generation, collection, and characterization using a spark generator and a thermophoretic deposition cell. Nucl Technol (in publication)Google Scholar
- Fernandes A, Loyalka SK (1996) Modeling of thermophoretic aerosol deposition in nuclear reactor containments. Nucl Technol 116(3):270–282Google Scholar
- Frieboes HB, Sinek JP, Nalcioglu O, Fruehauf JP, Cristini V (2006) Nanotechnology in cancer drug therapy: a biocomputational approach. In: BioMEMS and Biomedical Nanotechnology, Vol 1. Springer, New YorkGoogle Scholar
- Gutti VR, Loyalka SK (2009) Thermophoretic deposition in a cylindrical tube: computations and comparison with experiments. Nucl Technol 166(2):121–133Google Scholar
- Hsu H (2004) Photochemical synthesis of gold nanoparticles with interesting shapes. NNIN REU Research accomplishments:68–69Google Scholar
- Huang X (2006) Gold nanoparticles used in cancer cell diagnostics, selective photothermal therapy and catalysis of NADH oxidation reaction. Dissertation, Georgia Institute of Technology, AtlantaGoogle Scholar
- Jenson GA, Rohmann CA, Perrigo LD (1980) Recovery and use of fission product noble metals. Transactions ANS 34:335–336Google Scholar
- Pathak P, Katiyar VK, Giri S (2007) Cancer research-nanoparticles, nanobiosensors and their use in cancer research. J Nanotechnol. doi: 10.2240/azojono0116