| Autor: |
Podlovchenko, B., Kolyadko, E. |
| Zdroj: |
Russian Journal of Electrochemistry; August 2003, Vol. 39 Issue: 8 p823-827, 5p |
| Abstrakt: |
Adsorption of carbon monoxide in the presence of adlayers formed upon exposure of Pt/Pt to I–anions and I2(0.5 M Н2SO4as the supporting electrolyte) is studied using the method of electrode washing. Transients of current and potentiodynamic curves show that the displacement of iodine adatoms from the Pt/Pt surface by CO is virtually complete when CO is adsorbed in the range of hydrogen adsorption potentials (E≤ 0.35 V (RHE)) and incomplete at higher potentials. It is concluded that the bond formed by iodine adatoms with the surface strengthens with an increase in the potential. Possible reasons for the striking difference in the behavior of adatomic monolayers formed from KI and I2solutions is discussed. The surface charge of Pt/Pt is observed to drastically change as a result of the displacement of iodine adatoms by carbon monoxide. |
| Databáze: |
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| Externí odkaz: |
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