Excess interfacial energy change of solid/aqueous salt solution system with increasing salt concentration at a constant charge-determining ion activity based on the Gibbs equation and ionic components of charge

• Authors: Tomasz Ratajczak , Jan Drzymala
• Languages of publication: EN

Abstracts

EN

A thermodynamic equation relating the change of interfacial excess (Gibbs) energy in the solid/aqueous salt solution system, caused by a variation of concentration of inorganic salt at a constant charge-determining ion activity, temperature and pressure, is derived. The equation is based on the Gibbs equation and ionic components of charge parameters. On the basis of literature experimental data for the AgI/aqueous KNO3 and TiO2/aqueous NaCl systems it was shown that the interfacial excess energy decreases with increasing salt concentration due to variation of the ionic components of charge of the interface. [...]

Keywords

EN

Gibbs equation; Adsorption; Surface tension; Surface charge; Jones-Ray effect

• Publisher: De Gruyter Open
• Journal: Open Chemistry
• Year: 2012
• Volume: 10
• Issue: 6
• Pages: 1927-1932

Dates

published

1 - 12 - 2012

online

21 - 9 - 2012

Contributors

author

Tomasz Ratajczak

• Military Institute of Engineering Technology, 50-961, Wroclaw 43, Poland

author

Jan Drzymala

• Department of Geoengineering, Mining and Geology Wroclaw University of Technology, 50-370, Wroclaw, Poland

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Identifiers

DOI

10.2478/s11532-012-0118-y