Figure 5

Effect of the bulk pH on the electric potential across the interface between the surface coating and the solution. Profiles obtained under the assumption of z-dependent ionization (___) are displayed together with the respective solutions for α(z)=const (-----) (see text). Calculation conditions are as follows: σ=0; δ=5 nm; mol L⁻¹ (a), 10⁻³ mol L⁻¹ (a), 10^−3.5 mol L⁻¹ (b), 10⁻⁵ mol L⁻¹ (b); mol L⁻¹.