Metallocene Voltammetric Reference Related to a Normal Hydrogen Electrode

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15110%2F25%3A73633886" target="_blank" >RIV/61989592:15110/25:73633886 - isvavai.cz</a>

Alternative codes found

RIV/00216224:14310/25:00140797

Result on the web

<a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC11912535/pdf/jz4c03390.pdf" target="_blank" >https://pmc.ncbi.nlm.nih.gov/articles/PMC11912535/pdf/jz4c03390.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.jpclett.4c03390" target="_blank" >10.1021/acs.jpclett.4c03390</a>

Result language

angličtina

Original language name

Metallocene Voltammetric Reference Related to a Normal Hydrogen Electrode

Original language description

The potentials of electrochemical processes in ideal aqueous media are related to the potential of a normal hydrogen electrode (NHE). However, in non-ideal media, the potentials of a metallocene redox couple are used as a reference. Such measurements with free metallocene in solution are complicated by adsorption and mass transport phenomena and solvation effects. Herein, a platinum electrode with an anchored ferrocene moiety (Pt,Fc) was used for cyclic voltammetric measurements of the potential of ferrocene/ferrocenium (Fc/Fc+) redox transformation in not only non-aqueous but, for the first time, aqueous solutions as well. This enabled us to eliminate the aforementioned problems associated with the application of free metallocene molecules in solution and, thus, to relate the midpoint potential (Epm) of the Fc/Fc+ redox couple to a NHE. After elimination of the liquid junction potential in an aqueous 0.1 M KCl solution at 25 °C, the average intraday Epm value obtained with freshly prepared Pt,Fc electrodes was found to be 0.312 ± 0.008 V versus the secondary Ag|AgCl electrode. The Pt,Fc electrode can be applied for the standardization of electrochemical measurements and investigation of solvation phenomena at interfaces in non-ideal media.

Czech name

—

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

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

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

Name of the periodical

Journal of Physical Chemistry Letters

ISSN

1948-7185

e-ISSN

—

Volume of the periodical

16

Issue of the periodical within the volume

10

Country of publishing house

US - UNITED STATES

Number of pages

5

Pages from-to

2487-2491

UT code for WoS article

001435159500001

EID of the result in the Scopus database

2-s2.0-86000144343