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Dissolution and Reprecipitation of Barium at the Particulate BaTiO3-Aqueous Solution Interface



U Paik, M Lee, Vincent A. Hackley, Y S. Jung


The electrolinetic behavior of BaTO3 particles in an aqueous medium exhibit a hysteresis loop with titration direction. As BaTiO3 suspension was titrated toward acidic pH, the amount of Ba2+ dissolution strongly increases, and in the subsequent titration toward alkaline pH, Ba2+ adsorbed and/or reprecipitated on the Ba-depleted BaTiO3 surface. This dissolution-reprecipitation cycle results in the observed hysteresis behavior. An attempt was made to identify the responsible species of the adsorbed/reprecipitated compound by XPS in conjunction with electrokinetic titrations.
Materials Research Bulletin


barium titanate, colloids, dissolution, dynamic nobility, electrokinetic potential, isoelectric point, precipitation, stability, x-ray photoelectron spectroscopy


Paik, U. , Lee, M. , Hackley, V. and Jung, Y. (2002), Dissolution and Reprecipitation of Barium at the Particulate BaTiO<sub>3</sub>-Aqueous Solution Interface, Materials Research Bulletin (Accessed July 18, 2024)


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Created December 31, 2001, Updated October 12, 2021