Abstract
The results of a systematic investigation on the influence of different alkali ion species on the surface charge density,σ 0, of spherical silica particles (AEROSIL 300) in the pH range between 4 and 8 and with electrolyte concentrations from 0.005 M to 0.3 M are presented. The accuracy of the data may be described by a residual deviation,s(σ m0 ), including at least four single measurements:s(σ m0 )>0.2μC/cm2. The alkali sequence found for the spherical particles is in agreement with data for porous silica published by other authors.
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Sonnefeld, J., Göbel, A. & Vogelsberger, W. Surface charge density on spherical silica particles in aqueous alkali chloride solutions. Colloid Polym Sci 273, 926–931 (1995). https://doi.org/10.1007/BF00660369
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DOI: https://doi.org/10.1007/BF00660369