Noise and ac impedance analysis of ion transfer kinetics at the micro liquid/liquid interface

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F15%3A00443391" target="_blank" >RIV/61388955:_____/15:00443391 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.elecom.2015.04.006" target="_blank" >http://dx.doi.org/10.1016/j.elecom.2015.04.006</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.elecom.2015.04.006" target="_blank" >10.1016/j.elecom.2015.04.006</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Noise and ac impedance analysis of ion transfer kinetics at the micro liquid/liquid interface

Popis výsledku v původním jazyce

Fluctuation analysis was utilized to determine the TEA ion transfer kinetics across the water/1,2-dichloroethane interface. The obtained data were compared with those derived from electrochemical impedance spectroscopy experiments using the same electrolytic cell. The apparent standard rate constants ks determined by these two techniques have a similar value. The average value ks = 0.37 cm s-1 is comparable with the previously reported value ks = 0.2 cm s-1. The experimental approach utilizing a thick wall glass micro-capillary to fix the interface exhibits a very small stray capacitance value, proving this system to be suitable for determining the kinetics of the fast ion transfer across a liquid/liquid interface. Application of a method employing a small perturbation signal prevents polarization of the inner capillary surface by current flowing through the cell. The induced polarization of the capillary can affect ion concentration at the interface due to electroosmosis and thus make

Název v anglickém jazyce

Noise and ac impedance analysis of ion transfer kinetics at the micro liquid/liquid interface

Popis výsledku anglicky

Fluctuation analysis was utilized to determine the TEA ion transfer kinetics across the water/1,2-dichloroethane interface. The obtained data were compared with those derived from electrochemical impedance spectroscopy experiments using the same electrolytic cell. The apparent standard rate constants ks determined by these two techniques have a similar value. The average value ks = 0.37 cm s-1 is comparable with the previously reported value ks = 0.2 cm s-1. The experimental approach utilizing a thick wall glass micro-capillary to fix the interface exhibits a very small stray capacitance value, proving this system to be suitable for determining the kinetics of the fast ion transfer across a liquid/liquid interface. Application of a method employing a small perturbation signal prevents polarization of the inner capillary surface by current flowing through the cell. The induced polarization of the capillary can affect ion concentration at the interface due to electroosmosis and thus make

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CG - Elektrochemie

OECD FORD obor

—

Projekt

<a href="/cs/project/GA13-04630S" target="_blank" >GA13-04630S: Vývoj spolehlivého přístupu k měření rychlostí přenosu iontů přes rozhraní nemísitelných kapalin (ITIES)</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Electrochemistry Communications

ISSN

1388-2481

e-ISSN

—

Svazek periodika

56

Číslo periodika v rámci svazku

JUL 2015

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

3

Strana od-do

43-45

Kód UT WoS článku

000356748700010

EID výsledku v databázi Scopus

2-s2.0-84929492563