Structure of electrical double layer at the Al2O3-SiO2/electrolyte solution interface
| 1 | Maria Curie Skłodowska University |
| 2 | Institute of Surface Chemistry, Kiev |
Publication date: 2007-01-01
Physicochem. Probl. Miner. Process. 2007;41(1):215–225
KEYWORDS
ABSTRACT
The structures of the electrical double layer at the Al2O3-SiO2/NaClO4 interface with different alumina-to-silica ratios were interpreted using the surface complexation model. The surface charge and potential ζ of the system has been determined as a function of pH for 0.1, 0.01, and 0.001 mol/dm3 solutions of NaClO4. A significant difference in the pH values of IEP and point of zero charge was observed for Al2O3-SiO2 samples. The ionization and complexation constants have also been determined.
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