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Updated: Aug 14, 2026

Synthesis and Characterization of Supramolecular Colloids
Published on: April 22, 2016
The surface potential of a spherical colloid particle: functional theoretical approach
Zheng-Wu Wang1, Gan-Zuo Li, Da-Ren Guan
1Key Laboratory of Colloid and Interface Chemistry for State Education Ministry, Ji'nan, Shandong 250100, People's Repulic of China.
Abstract:
By using the iterative method in functional analysis, the potential of the electrical double layer of a spherical colloid particle, which is represented by the so-called Poisson-Boltzmann (PB) equation, has been solved analytically under general potential conditions. With the help of the diagram method in mathematics, the surface potential of the particle has been defined from the second iterative solution. The influence of the parameters included in the solutions on the surface potential has been studied. The results show that the surface potential of the particle increases as the temperature of the system, the aggregation number, and the concentration of ions increase, but decreases with an increase in the dielectric constant and the valence of the ions. The corresponding space charge density also has been illustrated in this work.
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