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

Published

January 1, 2002

Author(s)

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

Abstract

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.

Citation

Materials Research Bulletin

Volume

37

Pub Type

Journals

Keywords

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

Citation

Paik, U. , Lee, M. , Hackley, V. and Jung, Y. (2002), Dissolution and Reprecipitation of Barium at the Particulate BaTiO₃-Aqueous Solution Interface, Materials Research Bulletin (Accessed May 18, 2026)

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