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Temperature effects on electrical double layer at solid‐aqueous solution interface
Author(s) -
Alizadeh Amer,
Wang Moran
Publication year - 2020
Publication title -
electrophoresis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.666
H-Index - 158
eISSN - 1522-2683
pISSN - 0173-0835
DOI - 10.1002/elps.201900354
Subject(s) - zeta potential , conductance , work (physics) , layer (electronics) , aqueous solution , work function , electrical resistance and conductance , materials science , phenomenological model , double layer (biology) , ion , chemical physics , thermodynamics , chemistry , nanotechnology , condensed matter physics , composite material , physics , organic chemistry , nanoparticle
Despite the significant influence of solution temperature on the structure of electrical double layer, the lack of theoretical model intercepts us to explain and predict the interesting experimental observations. In this work, we study the structure of electrical double layer as a function of thermochemical properties of the solution by proposing a phenomenological temperature dependent surface complexation model. We found that by introducing a buffer layer between the diffuse layer and stern layer, one can explain the sensitivity of zeta potential to temperature for different bulk ion concentrations. Calculation of the electrical conductance as function of thermochemical properties of solution reveals the electrical conductance not only is a function of bulk ion concentration and channel height but also the solution temperature. The present work model can provide deep understanding of micro‐ and nanofluidic devices functionality at different temperatures.