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Revista de Chimie (Rev. Chim.), Year 2008, Volume 59, Issue 8,

https://doi.org/10.37358/RC.08.8.1908

Maria Marcu, Cristian Pirvu, Alexandra Banu, Elena Vulpasu

Effect of Chlorine Substitute on Phenols Electrooxidation Studied by Cyclic Voltammetry

Abstract:

The electro-oxidation of chlorophenols (CPs) with one to three chlorine atoms on platinum, gold and glassy carbon electrodes was studied by cyclic voltammetry. The results obtained indicate that the electro-oxidation of CPs on all electrodes depends on the pH, number of chlorine atoms in the aromatic ring and position of the Cl atoms with respect to the phenolic OH group. From a comparative study of the electro-oxidation of several CPs in aqueous solution at different pH, it is concluded that for the same number of chlorine atoms the ortho isomer is oxidized at a more negative potential than the para isomer. The anodic potential of the electro-oxidation of the chlorophenols (CPs) increases with increasing pKa.

Keywords:
chlorophenols; electro-oxidation; gold electrode; platinum electrode; cyclic voltammetry

Issue: 2008, Volume 59, Issue 8
Pages:
Publication date: 2008/9/9
https://doi.org/10.37358/RC.08.8.1908
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