Deutsch
 
Hilfe Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT
Zur Ablage hinzufügen
  Lokale TagsFreigabegeschichteDetailsÜbersicht

Freigegeben
Zeitschriftenartikel

The effect of the alkali metal cation on the electrocatalytic oxidation of formate on platinum

MPG-Autoren
/persons/resource/persons22194

Varela,  Hamilton
Physical Chemistry, Fritz Haber Institute, Max Planck Society;
Institute of Chemistry of São Carlos, University of São Paulo;

Externe Ressourcen
Es sind keine externen Ressourcen hinterlegt
Volltexte (beschränkter Zugriff)
Für Ihren IP-Bereich sind aktuell keine Volltexte freigegeben.
Volltexte (frei zugänglich)

c4ra00769g.pdf
(Verlagsversion), 622KB

Ergänzendes Material (frei zugänglich)
Es sind keine frei zugänglichen Ergänzenden Materialien verfügbar
Zitation

Previdello, B. A. F., Machado, E. G., & Varela, H. (2014). The effect of the alkali metal cation on the electrocatalytic oxidation of formate on platinum. RSC Advances, 4(29), 15271-15275. doi:10.1039/C4RA00769G.


Zitierlink: https://hdl.handle.net/11858/00-001M-0000-0018-F712-7
Zusammenfassung
Non-covalent interactions between hydrated alkali metal cations and adsorbed oxygenated species on platinum might considerably inhibit some electrocatalytic reactions. We report in this communication the effect exerted by electrolyte alkali metal cations on the electro-oxidation of formate ions on platinum. The system was investigated by means of cyclic voltammetry and chronoamperometry in the presence of an electrolyte containing Li+, Na+, or K+. As already observed for other systems, the general activity towards the electro-oxidation of formate ions was found to increase in the sequence Li+ < Na+ < K+. In addition, we observed that the inhibition caused by smaller cations has a peculiar potential dependence because of the multi-peaked current profile of the electro-oxidation of formate on platinum. In this respect, we have also identified a new effect caused by cation inhibition at intermediate potentials, namely a peak splitting towards the use of smaller cations. Results are discussed in connection with mechanistic aspects of this model system.