8.8.4 Structure of colloidal particle and electrokinetic potential Helmholtz double Gouy-Chappman Stern double layer(1853) layer(1910,1913) layer(1924) Electrokinetic potential/ s(zeta) potential Problems 1. Which model can be used to explain the charge of colloidal particle 2. Does the electrolyte concentration affect the structure of electric double layerHolmholtz double layer (1853) Gouy-Chappman layer (1910, 1913) Stern double layer (1924) Electrokinetic potential /  (zeta) potential Problems: 1. Which model can be used to explain the charge of colloidal particle? 2. Does the electrolyte concentration affect the structure of electric double layer ? 8.8.4 Structure of colloidal particle and electrokinetic potential