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466774 
Journal Article 
A cyclic voltarnmetric study of phenol on Ti/PbO2 electrode in H2SO4 solution 
Dong, YJ; Lin, HB; Liu, XB; Ren, XB; Jiang, M 
2007 
65 
20 
2257-2260 
Chinese 
The electrocatalytic performance of Ti/PbO2 electrode was investigated during the electrochemical oxidation of phenol in H2SO4 solution by cyclic voltammetry. The results have shown that Ti/PbO2 electrode have strong oxidation properties for phenol in H2SO4 solution. In a low initial concentration of phenol, phenol can be oxidized by adsorbed hydroxy radicals generated on electrode and finally mineralized. In a higher concentration phenol or little adsorbed hydroxy radicals generated, phenol and its intermediates may be adhesive to the electrode surface, consequently diminishes the electrochemical active surface area of electrode leading to the decrease of active sites, prevents the reactants from approaching the electrode surface and inhibits the further oxidation of phenol. With the increase of electrolysis time, the electrode activity can be restored due to the gradual oxidation of the substances adsorbed on electrode surface. 
phenol; cyclic voltammetry; Ti/PbO2 electrode; electrochemical oxidation; doped lead dioxide; electrochemical degradation; oxidation