Effect of water solubility in organic solvents on the standard Gibbs energy of ion transfer across a water/organic solvent interface
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F23%3A00570455" target="_blank" >RIV/61388955:_____/23:00570455 - isvavai.cz</a>
Result on the web
<a href="https://hdl.handle.net/11104/0341746" target="_blank" >https://hdl.handle.net/11104/0341746</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.electacta.2023.142222" target="_blank" >10.1016/j.electacta.2023.142222</a>
Alternative languages
Result language
angličtina
Original language name
Effect of water solubility in organic solvents on the standard Gibbs energy of ion transfer across a water/organic solvent interface
Original language description
Ion transfer voltammetry is used to study the transfer of alkali metal and proton cations and the Cl- anion from the aqueous solution of MCl (M+ = H+, Li+, Na+, K+, Rb+, Cs+) to the solution of bis(triphenylphosphor-anylidene)ammonium tetrakis(pentafluorophenyl)borate in alpha,alpha.alpha-trifluorotoluene (TFT) or 1,2-dichloroethane (DCE). The scale of the applied potentials is converted to the scale of the Galvani potential differences on the basis of the voltammetric measurements of the standard ion transfer potential for the tetraethylammonium (TEA+) ion used as a reference ion in situ. The interfacial tension measurements at the water/TFT interface yield the zero-charge potential difference, which is close to the expected zero value. The standard Gibbs energies of ion transfer Delta owG0i are evaluated from the voltammetric data on considering both the effect of the association between the transferred ion and the counter-ion of the organic solvent phase, and the effect of the ion migration in the aqueous phase. The values of Delta owG0i for the ion transfer to TFT are found to be considerably higher than those obtained for the ion transfer to DCE. This difference is proposed to be related to the significantly lower solubility of water in TFT, possibly requiring the removal of the ion hydration shell in the course of the ion transfer from water to TFT. Such conclusion is supported by the calculations of Delta owG0i by using an advanced Born-type model of ion solvation.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)
Result continuities
Project
<a href="/en/project/GA22-32631S" target="_blank" >GA22-32631S: Anomalous salt extraction from water to polar organic solvents: A novel mechanism of the spontaneous emulsification and practical application</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Electrochimica acta
ISSN
0013-4686
e-ISSN
1873-3859
Volume of the periodical
449
Issue of the periodical within the volume
MAY 2023
Country of publishing house
GB - UNITED KINGDOM
Number of pages
8
Pages from-to
142222
UT code for WoS article
000955300400001
EID of the result in the Scopus database
2-s2.0-85150270464