Communications: Monovalent ion condensation at the electrified liquid/liquid interface.
X-ray reflectivity studies demonstrate the condensation of a monovalent ion at the electrified interface between electrolyte solutions of water and 1,2-dichloroethane. Predictions of the ion distributions by standard Poisson-Boltzmann (Gouy-Chapman) theory are inconsistent with these data at higher applied interfacial electric potentials. Calculations from a Poisson-Boltzmann equation that incorporates a nonmonotonic ion-specific potential of mean force are in good agreement with the data.
Laanait
Nouamane
N
Department of Physics, University of Illinois at Chicago, Chicago, Illinois 60607, USA. nlaana1@uic.edu
Yoon
Jaesung
J
Hou
Binyang
B
Vanysek
Petr
P
Meron
Mati
M
Lin
Binhua
B
Luo
Guangming
G
Benjamin
Ilan
I
Schlossman
Mark L
ML
D004560:Electricity; D004563:Electrochemistry; D005025:Ethylene Dichlorides / Q000737:chemistry*; D055672:Static Electricity; D014867:Water / Q000737:chemistry*; D014961:X-Ray Diffraction
D005025:Ethylene Dichlorides; D014867:Water; C024565:ethylene dichloride