J Colloid Interface Sci. 2000 Jul 01;227(1):152-163. doi: 10.1006/jcis.2000.6847.
Journal of colloid and interface science
Larson, Attard
PMID: 10860606 DOI: 10.1006/jcis.2000.6847
Charge titration data for silver iodide, titanium dioxide, aluminum oxide, silica dioxide and ferric hydroxide are analyzed using a generic site binding model that has the Nernst equation as a limiting form. Both the hypernetted chain and the nonlinear Poisson-Boltzmann approximations are used to relate the diffuse double-layer potential to the surface charge, and a zeroth-order Stern layer is used to give the surface potential. In all cases it is shown that in the vicinity of the point of zero charge the Nernst equation accurately gives the surface charge. Copyright 2000 Academic Press.