Growth of Monodispersed Colloids by Aggregation of Nucleating Subunits

Details Growth of Monodispersed Colloids by Aggregation of Nucleating Subunits Growth of Monodispersed Colloids by Aggregation of Nucleating Subunits

2000-03-02

arxiv.org/abs/cond-mat/0003029v1

Recent Research Developments in Statistical Physics, Volume 1, Pages 1-17 (Transworld Research Network, Trivandrum, India, 200

Physics

Condensed Matter

Materials Science

26 pages (including 4 figures) in plain TeX

Scientific paper

Formation of monodispersed colloidal particles is a complex process: nuclei, produced rapidly in a supersaturated solution, grow to nanosize primary particles, which then aggregate (coagulate) to form much larger final colloids. This paper reviews a kinetic model that explains the formation of dispersions of narrow size distribution in such processes. Numerical simulations of the kinetic equations, with experimental model parameter values, are reported. The model was tested for a system involving formation of uniform spherical gold particles. The calculated average size, the width of the particle size distribution, and the time scale of the process, agreed semiquantitatively with the experimental values.

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