Abstract
The adsorption of labelled H2SO4 was studied at a ruthenium electrode in 10-2 mol dm-3 HClO4 supporting electrolyte. Electrodes were obtained by the electrodeposition of Ru3+ ions on a thin gold layer. The potential dependence of the adsorption was studied over a wide potential range (-200 to + 1400 mV on the RHE scale). The appearance of two maxima (at E ∼ 100 and E ∼ 1000 mV) was observed on the Γ vs. E curve. The first maximum can be explained by the role of Hads and Oads species while the second one occurs in the potential range where the different transformation of surface oxide species takes place. These experimental results seem to be in agreement with expectations based on the voltammetric data reported in the literature [Conway and co-workers, J. Phys. Chem., 81 (1977) 2271; J. Electrochem. Soc., 125 (1976) 1471; Arvia and co-workers. J. Electroanal. Chem., 151 (1983) 193] concerning H and O electrosorption and formulation of surface oxide species. The potential dependence of the adsorption is discussed in the light of these data using the results obtained from the study of the mobility of adsorbed labelled species and hysteresis phenomena.
| Original language | English |
|---|---|
| Pages (from-to) | 259-265 |
| Number of pages | 7 |
| Journal | Journal of Electroanalytical Chemistry |
| Volume | 205 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - jún. 25 1986 |
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ASJC Scopus subject areas
- Chemical Engineering(all)
- Analytical Chemistry
- Electrochemistry
Cite this
A radiotracer study of the adsorption of H2SO4 at ruthenium electrodes. / Horányi, G.; Veres, A.
In: Journal of Electroanalytical Chemistry, Vol. 205, No. 1-2, 25.06.1986, p. 259-265.Research output: Article
}
TY - JOUR
T1 - A radiotracer study of the adsorption of H2SO4 at ruthenium electrodes
AU - Horányi, G.
AU - Veres, A.
PY - 1986/6/25
Y1 - 1986/6/25
N2 - The adsorption of labelled H2SO4 was studied at a ruthenium electrode in 10-2 mol dm-3 HClO4 supporting electrolyte. Electrodes were obtained by the electrodeposition of Ru3+ ions on a thin gold layer. The potential dependence of the adsorption was studied over a wide potential range (-200 to + 1400 mV on the RHE scale). The appearance of two maxima (at E ∼ 100 and E ∼ 1000 mV) was observed on the Γ vs. E curve. The first maximum can be explained by the role of Hads and Oads species while the second one occurs in the potential range where the different transformation of surface oxide species takes place. These experimental results seem to be in agreement with expectations based on the voltammetric data reported in the literature [Conway and co-workers, J. Phys. Chem., 81 (1977) 2271; J. Electrochem. Soc., 125 (1976) 1471; Arvia and co-workers. J. Electroanal. Chem., 151 (1983) 193] concerning H and O electrosorption and formulation of surface oxide species. The potential dependence of the adsorption is discussed in the light of these data using the results obtained from the study of the mobility of adsorbed labelled species and hysteresis phenomena.
AB - The adsorption of labelled H2SO4 was studied at a ruthenium electrode in 10-2 mol dm-3 HClO4 supporting electrolyte. Electrodes were obtained by the electrodeposition of Ru3+ ions on a thin gold layer. The potential dependence of the adsorption was studied over a wide potential range (-200 to + 1400 mV on the RHE scale). The appearance of two maxima (at E ∼ 100 and E ∼ 1000 mV) was observed on the Γ vs. E curve. The first maximum can be explained by the role of Hads and Oads species while the second one occurs in the potential range where the different transformation of surface oxide species takes place. These experimental results seem to be in agreement with expectations based on the voltammetric data reported in the literature [Conway and co-workers, J. Phys. Chem., 81 (1977) 2271; J. Electrochem. Soc., 125 (1976) 1471; Arvia and co-workers. J. Electroanal. Chem., 151 (1983) 193] concerning H and O electrosorption and formulation of surface oxide species. The potential dependence of the adsorption is discussed in the light of these data using the results obtained from the study of the mobility of adsorbed labelled species and hysteresis phenomena.
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U2 - 10.1016/0022-0728(86)90236-6
DO - 10.1016/0022-0728(86)90236-6
M3 - Article
AN - SCOPUS:40249113923
VL - 205
SP - 259
EP - 265
JO - Journal of Electroanalytical Chemistry
JF - Journal of Electroanalytical Chemistry
SN - 0022-0728
IS - 1-2
ER -