Abstract
We have prepared spherical non-agglomerated silver
nanoparticles by an
evaporation-condensation-dilution/cooling technique.
Silver was evaporated from a crucible in a tubular flow
reactor. A porous tube diluter was used to quench the
carrier gas at the outlet of the reactor to enhance the
formation of small particles and to suppress
agglomeration and other particle growth mechanisms. The
number size distribution of the prepared particles was
measured with a DMA-CNC combination and the size and the
shape of the particles were analysed with TEM. The system
was modelled using a sectional aerosol dynamics computer
code (ABC) to estimate the importance of different
aerosol processes. In all conditions the particles
obtained were non-agglomerated and spherical. The mean
particle diameter varied from 4 to 10 nm depending on
boundary conditions. From the modelling studies it can be
concluded that the nucleation rate is the most important
parameter controlling the final particle size.
Original language | English |
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Pages (from-to) | 325-335 |
Journal | Journal of Nanoparticle Research |
Volume | 4 |
Issue number | 4 |
DOIs | |
Publication status | Published - 2002 |
MoE publication type | A1 Journal article-refereed |
Keywords
- silver
- nanoparticles
- aerosol synthesis
- modelling