Electrocatalytic Efficiency of PbO2 in Water Decontamination

F. Smaili F. Smaili , A. Benchettara A. Benchettara
Российский электрохимический журнал
Abstract / Full Text

In this work, the electrodeposition of lead dioxide on a Pb electrode was realized by a potentiostatic method in 0.5 mol/L sulfuric acid solution at 1.3 V (ECS) during 30 min. The result of XRD showed that the crystal structure of PbO2 in acid solution is pure β-PbO2. The electrodegradation of tris (4-(dimethylamino) phenyl) methylium chloride (methyl violet 10B) dye in an aqueous solution of 0.1 mol/L sodium sulfate has been studied by potentiostatic method using β-PbO2 as anode. The methyl violet 10B was successfully oxidized by hydroxyl radicals electrogenerated from oxidation of water on the Pb/β-PbO2 electrode surface. The anodic oxidation of methyl violet 10B followed the pseudo-first order kinetics. The time and applied potential had significant effect on the electrochemical degradation of methyl violet 10B at the Pb/β-PbO2 electrode with a degradation rate of 10.5 g/(m2 day).

Author information
  • Laboratory of Electrochemistry-Corrosion, Metallurgy and Inorganic Chemistry, Faculty of Chemistry, (USTHB) BP 32, El Alia Bab Ezzouar, 16111, Algiers, Algeria

    F. Smaili & A. Benchettara

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