Abstract
The electrochemical oxidation of H2O2 at platinum rotating disc electrodes and microelectrodes was studied in the presence of chloride in the range 0-120 mM at pH 7.3. Oxidation was inhibited by chloride with greater inhibition at higher electrode rotation rates. The mode of inhibition was deduced to be non-competitive with the chloride interacting with precursor binding sites at the electrode surface, since increased [H2O2] did not decrease the degree of inhibition. The rotation rate dependence indicates that it is likely a soluble platinum complex involving chloride forms to remove binding sites from the electrode surface.
Original language | English |
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Pages (from-to) | 3573-3579 |
Number of pages | 7 |
Journal | Electrochimica Acta |
Volume | 45 |
Issue number | 21 |
DOIs | |
Publication status | Published - Jul 14 2000 |
Externally published | Yes |
Keywords
- Electrochemical electrode
- Enzyme
- Rotating disk electrode
ASJC Scopus subject areas
- General Chemical Engineering
- Electrochemistry