کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
218681 | 463212 | 2014 | 5 صفحه PDF | دانلود رایگان |
• We compare kinetic data obtained for the transfer of TEA+ across ITIES.
• Impedance spectroscopy yields similar data as steady state voltammetry.
• The apparent standard rate constant is close to 0.2 cm s−1.
The kinetics of tetraethylammonium (TEA+) ion transfer across the water/1,2-dichloroethane interface was studied using electrochemical impedance spectroscopy and steady-state voltammetry. The liquid/liquid interface was supported at the tip of a microcapillary. A novel capillary design methodology has advantageously allowed the use of the same microcapillary in a number of different experiments. It is herein shown that the geometry of the microcapillary tip region is of critical importance in order to obtain reliable kinetic data. Both steady-state voltammetry and electrochemical impedance spectroscopy yielded approximately the same apparent standard rate constant of 0.2 cm s−1 for TEA+ transfer across the water/1,2-dichloroethane.
Journal: Journal of Electroanalytical Chemistry - Volume 731, 1 October 2014, Pages 107–111