THE APPLICATION OF THE MPB4 THEORY TO THE INTERFACE BETWEEN 2 IMMISCIBLE ELECTROLYTE-SOLUTIONS .1. THE DIFFERENTIAL CAPACITANCE OF THE WATER NITROBENZENE INTERFACE
Qz. Cui et al., THE APPLICATION OF THE MPB4 THEORY TO THE INTERFACE BETWEEN 2 IMMISCIBLE ELECTROLYTE-SOLUTIONS .1. THE DIFFERENTIAL CAPACITANCE OF THE WATER NITROBENZENE INTERFACE, Journal of electroanalytical chemistry [1992], 372(1-2), 1994, pp. 15-19
We use the MPB4 theory to calculate the differential capacitance of th
e interface between NaBr + water and tetrabutylammoniumtetraphenyl bor
ate (TBATPB) + nitrobenzene at electrolyte concentrations of 0.01 M, 0
.02 M and 0.05 M. In addition to the effects of ion size and image for
ce, we consider the influence of the electrolyte concentration, the su
rface charge density and the solvent effect on the potential distribut
ion of the inner layer. The influence can be ascribed to ionic penetra
tion into the opposite solution and ion-ion correlations across the in
terface. Our results are in better agreement with the experimental val
ues than are other theoretical values. We conclude that the MPB4 theor
y-describes the structure of the water nitrobenzene interface well pro
vided that the influence of the electrolyte concentration, the surface
charge density and the solvent effect on the inner-layer potential di
stribution are included in the calculation.