Experimental and Modeling Study on Precipitation Kinetics of Silver in Nano and Micron Scale

• Autorzy: Manteghian M. , Ghader S.
• Języki publikacji: EN

Abstrakty

EN

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 crystalsize distribution, and with the aid of a mathematical model of the process, nucleation and growth kinetics of silver nanoparticles were de termined. 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. Never the less, 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.

Słowa kluczowe

EN

kinetics; reaction crystallization; silver nanoparticles; nucleation; growth; agglomeration

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Polish Journal of Chemistry
• Rocznik: 2009
• Tom: Vol. 83, nr 4
• Strony: 625--639
• Opis fizyczny: Bibliogr. 16 poz., rys.

Twórcy

autor

Manteghian M.

autor

Ghader S.

• Department of Chemical Engineering, Faculty of Engineering, Tarbiat Modares University, Jalal-Al-Ahmad High way, P.O. Box 14115-143, Tehran, Iran,

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