Model of Controlled Synthesis of Uniform Colloid Particles: Cadmium Sulfide

TL;DR

This paper improves a two-stage growth model to explain the controlled synthesis of uniform cadmium sulfide colloid particles, highlighting key parameters influencing size and uniformity, applicable to colloid formation from homogeneous solutions.

Contribution

It advances the existing model to better describe the growth of uniform CdS spheres, emphasizing the coupled nucleation and aggregation processes.

Findings

Identified key parameters controlling particle size and uniformity.

Demonstrated the model's applicability to colloid synthesis from homogeneous solutions.

Explained the dynamics of nucleation and aggregation in CdS particle formation.

Abstract

The recently developed two-stage growth model of synthesis of monodispersed polycrystalline colloidal particles is utilized and improved to explain growth of uniform cadmium sulfide spheres. The model accounts for the coupled processes of nucleation, which yields nanocrystalline precursors, and aggregation of these subunits to form the final particles. The key parameters have been identified that control the size selection and uniformity of the CdS spheres, as well as the dynamics of the process. This approach can be used to generally describe the formation of monodispersed colloids by precipitation from homogeneous solutions.