Electrosurface properties of hydr(oxides) and oxide nanostructures in 1 : 1 electrolyte solutions: 1. Adsorption characteristics of boehmite, goethite, and silicon dioxide

The adsorption of potential-determining ions on aluminum and iron hydroxide s and silicon dioxide was measured in KCl and NaCl background solutions. It was shown that dependences of the adsorption on pH and the concentration o f a background 1 : 1 electrolyte (NaCl) have the shape characteristic of ox ide surfaces; the of values pH(pZC') were determined. Results of adsorption measurements were used for the determination of constants of surface react ions and adsorption potentials of ions in terms of the 2-pK model.