A Comparative Study on Kinetics of Reaction Crystallization of Silver in Nano and Micron Scale

In the present study, reaction crystallization of silver micron and nanoparticles was studied in a batch crystallizer in two different set of experiments by reducing silver in the presence or absence of sodium citrate. From the experimental determination of crystal size distribution, and with the aid of a moment method, nucleation and growth kinetics of silver nano and micron particles were determined. Kinetic parameters were determined by fitting the power law expression to the experimental data. Nanoparticle growth rates indicate a diffusion controlled mechanism with a first order dependence on supersaturation, while the observed low dependence of nucleation rate on magma density imply the primary nucleation occurring. Nevertheless, in the synthesis of micron particles magma density was important and agglomeration took place and nucleation, volume crystal growth rates as well as agglomeration kernel were determined

کلیدواژه ها:

Silver Nanoparticle ، crystallization ، Nucleation ، Growth