Interfacial instability associated with the transfer of non-adsorbing ions across the polarized water/1,2-dichloroethane interface

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F18%3A00489822" target="_blank" >RIV/61388955:_____/18:00489822 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.jelechem.2017.09.011" target="_blank" >http://dx.doi.org/10.1016/j.jelechem.2017.09.011</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jelechem.2017.09.011" target="_blank" >10.1016/j.jelechem.2017.09.011</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Interfacial instability associated with the transfer of non-adsorbing ions across the polarized water/1,2-dichloroethane interface

Popis výsledku v původním jazyce

Polarography with the electrolyte dropping electrode is used to study the transfer of several non-adsorbing ions including Na+, H+, Cl-, tetrabutylammonium+ (TBA+) and tetraethylammonium+ (TEA+) across the water/1,2-dichloroethane interface. The transfer of Na+, H+, Cl- and TBA+ in the thermodynamically favored direction is accompanied by the interfacial instability, which is manifested by the substantial faradaic current amplification (polarographic current maximum). No such amplification is observed in case of the transfer of TEA+ in either direction. The potential range of the interfacial instability, as well as of its absence, is correctly predicted by the linear instability analysis developed by Aogaki et al. (Electrochim. Acta 23 (1978) 867). The analysis also provides an explanation for the experimentally observed decrease of the interfacial tension in the potential range of the instability. Two remarkable effects of the interfacial instability are demonstrated, specifically the irregularly repeated swapping of the faradaic current and the interfacial tension occurring close to the electrocapillary maximum between the amplified current/low interfacial tension and diffusion current/high interfacial tension levels, and the mechanical oscillation of the electrolyte drop in the former state.

Název v anglickém jazyce

Interfacial instability associated with the transfer of non-adsorbing ions across the polarized water/1,2-dichloroethane interface

Popis výsledku anglicky

Polarography with the electrolyte dropping electrode is used to study the transfer of several non-adsorbing ions including Na+, H+, Cl-, tetrabutylammonium+ (TBA+) and tetraethylammonium+ (TEA+) across the water/1,2-dichloroethane interface. The transfer of Na+, H+, Cl- and TBA+ in the thermodynamically favored direction is accompanied by the interfacial instability, which is manifested by the substantial faradaic current amplification (polarographic current maximum). No such amplification is observed in case of the transfer of TEA+ in either direction. The potential range of the interfacial instability, as well as of its absence, is correctly predicted by the linear instability analysis developed by Aogaki et al. (Electrochim. Acta 23 (1978) 867). The analysis also provides an explanation for the experimentally observed decrease of the interfacial tension in the potential range of the instability. Two remarkable effects of the interfacial instability are demonstrated, specifically the irregularly repeated swapping of the faradaic current and the interfacial tension occurring close to the electrocapillary maximum between the amplified current/low interfacial tension and diffusion current/high interfacial tension levels, and the mechanical oscillation of the electrolyte drop in the former state.

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/GA17-09980S" target="_blank" >GA17-09980S: Biomimetická elektrochemie emulzních mikrokapek na polarizovaném rozhraní dvou nemísitelných roztoků elektrolytů</a><br>

Návaznosti

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

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Journal of Electroanalytical Chemistry

ISSN

1572-6657

e-ISSN

—

Svazek periodika

819

Číslo periodika v rámci svazku

JUN 2018

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

6

Strana od-do

95-100

Kód UT WoS článku

000435619700013

EID výsledku v databázi Scopus

2-s2.0-85029420128