Adsorption, 2D-condensation, and redox reactions of bile acids on the hanging mercury drop electrode

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081707%3A_____%2F23%3A00583488" target="_blank" >RIV/68081707:_____/23:00583488 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11310/23:10472926

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S1572665723007476?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1572665723007476?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jelechem.2023.117887" target="_blank" >10.1016/j.jelechem.2023.117887</a>

Result language

angličtina

Original language name

Adsorption, 2D-condensation, and redox reactions of bile acids on the hanging mercury drop electrode

Original language description

Bile acids (BAs) are natural surfactants thanks to the facial amphiphilic character of the steroid skeleton. For the first time, the electrochemical and adsorption behaviour of selected bile acids differing in the number of hydroxyl groups on the steroid skeleton lithocholic acid (3 alpha-OH), deoxycholic acid (3 alpha-and 12 alpha-OH), and cholic acid (3 alpha-, 7 alpha-and 12 alpha-OH) was investigated on hanging mercury drop electrode (HMDE) in mixed Britton Robinson buffer: methanol (9:1) media. In cyclic voltammetry, all BAs yielded a negative signal at the potential of ca-1.4 V with intensity depending on pH of the solution. Further, sharp tensammetric signals confirming adsorption/desorption or re-organization processes of the adsorbed molecules were observed. AC voltammetric measurements revealed two-dimensional (2D) condensation of lithocholic acid in the pH range 12.0-7.0 visualized by the formation of a capacitance pit. Adsorption of the other studied BAs was indicated by the AC current density decrease. Measurements of differential capacitance dependencespotential (C-E curves) revealed this behaviour to be concentration and temperature dependent. A study on effect of halides (Cl-, Br-, I-) on the adsorption of bile acids showed involvement of primarily hydrophobic interactions in the BA interaction with the HMDE surface.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

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

Project

<a href="/en/project/GA19-11268S" target="_blank" >GA19-11268S: Electrochemical Methods: New Approaches for Characterization and Analysis of Steroids</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

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

Name of the periodical

Journal of Electroanalytical Chemistry

ISSN

1572-6657

e-ISSN

1873-2569

Volume of the periodical

950

Issue of the periodical within the volume

DEC 1 2023

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

7

Pages from-to

117887

UT code for WoS article

001109764500001

EID of the result in the Scopus database

2-s2.0-85175810964