Ion transfer kinetics at the interface between two immiscible electrolyte solutions supported on a thick-wall micro-capillary. A mini review

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F17%3A00473147" target="_blank" >RIV/61388955:_____/17:00473147 - isvavai.cz</a>

Výsledek na webu

<a href="http://hdl.handle.net/11104/0270313" target="_blank" >http://hdl.handle.net/11104/0270313</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.coelec.2016.11.004" target="_blank" >10.1016/j.coelec.2016.11.004</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Ion transfer kinetics at the interface between two immiscible electrolyte solutions supported on a thick-wall micro-capillary. A mini review

Popis výsledku v původním jazyce

Absence of an agreement on the values of the experimental rate constant of the ion transfer across the interface between two immiscible electrolyte solutions (ITIES) has stimulated the development of a more reliable methodology of kinetic measurements. This communication provides a brief review of our recent kinetic studies of the model tetraethylammonium (TEA+) ion transfer across the water/1,2-dichloroethane interface supported on a thick-wall micro-capillary by electrochemical impedance spectroscopy, noise analysis and steady-state voltammetry, all which give comparable values of the apparent standard rate constant k0 = 0.3–0.7 cm s-1. Similar values of the apparent activation energies, which were evaluated from the temperature dependence of k0 and the diffusion coefficient of TEA+ (cca 13 kJ mol-1), point to the absence of an additional energy barrier for the ion to overcome in the interfacial region. Role of the coupling of the ion motion and thermal corrugations of the interface (solvent protrusions) in the ion transfer kinetics is highlighted. Stochastic effects in the ion transfer kinetics at the nanoscopic ITIES are worth considering.

Název v anglickém jazyce

Ion transfer kinetics at the interface between two immiscible electrolyte solutions supported on a thick-wall micro-capillary. A mini review

Popis výsledku anglicky

Absence of an agreement on the values of the experimental rate constant of the ion transfer across the interface between two immiscible electrolyte solutions (ITIES) has stimulated the development of a more reliable methodology of kinetic measurements. This communication provides a brief review of our recent kinetic studies of the model tetraethylammonium (TEA+) ion transfer across the water/1,2-dichloroethane interface supported on a thick-wall micro-capillary by electrochemical impedance spectroscopy, noise analysis and steady-state voltammetry, all which give comparable values of the apparent standard rate constant k0 = 0.3–0.7 cm s-1. Similar values of the apparent activation energies, which were evaluated from the temperature dependence of k0 and the diffusion coefficient of TEA+ (cca 13 kJ mol-1), point to the absence of an additional energy barrier for the ion to overcome in the interfacial region. Role of the coupling of the ion motion and thermal corrugations of the interface (solvent protrusions) in the ion transfer kinetics is highlighted. Stochastic effects in the ion transfer kinetics at the nanoscopic ITIES are worth considering.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

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

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Current Opinion in Electrochemistry

ISSN

2451-9103

e-ISSN

2451-9103

Svazek periodika

1

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

133-139

Kód UT WoS článku

000424673700022

EID výsledku v databázi Scopus

2-s2.0-85041411247