Redox transformations of adsorbed NO molecules on a Pt(100) electrode

E. B. Molodkina, I. G. Botryakova, A. I. Danilov (Corresponding author), J. Souza-Garcia, M. C. Figueiredo, J. M. Feliu

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

7 Citaten (Scopus)


The electrochemical behavior of adsorbed NO molecules on a Pt(100) electrode has been studied in perchloric acid solutions by means of cyclic voltammetry. According to the literature data, a saturated NO adlayer with a coverage of ∼0.5 monolayers (MLs) is formed under open circuit conditions in an acidic nitrite solution as a result of a disproportionation reaction. The saturated adlayer is stable in the potential range of 0.4-0.9 V vs. a reversible hydrogen electrode in 0.1 M HClO4. NO molecules are oxidized at 0.9-1.1 V with the formation of adsorbed nitrite anions, and they can be reduced to ammonia at potentials less than 0.4 V. In this paper it has been shown that the adlayer stability depends on the surface coverage and extent of ordering. An unsaturated NO adlayer demonstrates NO ↔NH3 redox transformations at 0.5-0.8 V.

Originele taal-2Engels
Pagina's (van-tot)370-378
Aantal pagina's9
TijdschriftRussian Journal of Electrochemistry
Nummer van het tijdschrift4
StatusGepubliceerd - 1 jan. 2014
Extern gepubliceerdJa


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