 ISSN 0235-7216 ISSN 2424-4538 (online) |
2010 m. Nr. 1 Electrochemical oxidation of 1-phenyl-4-methyl-pyrazolidone
on boron-doped diamond and platinum electrodes
The electrochemical oxidation of 1-phenyl-4-methyl-pyrazolidone (PMP) on a borondoped diamond electrode has been studied and compared with the oxidation on a platinum electrode. The presence of PMP in 0.1 M NaOH solution determines the increase of oxygen evolution potential on both BDD diamond and platinum anodes, possibly because of the adsorption of PMP or its oxidation intermediates. Accomplishment of an electric charge adequate to the PMP amount during the electrolysis of PMP alkaline solution in the potential region of electrolyte decomposition results in the oxidation of about 94% PMP on the BDD anode, presumably via electrogenerated hydroxyl radicals, and only ~33% on the Pt anode. The results showed that the platinum anode was completely deactivated during electrolysis in alkaline PMP solution. Keywords: boron-doped diamond electrode, electrochemical oxidation, 1-phenyl-4-methyl-pyrazolidone |
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