Electrocatalytic Efficiency of PbO2 in Water Decontamination
- Authors: Smaili F.1, Benchettara A.1
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Affiliations:
- Laboratory of Electrochemistry-Corrosion, Metallurgy and Inorganic Chemistry, Faculty of Chemistry, (USTHB) BP 32
- Issue: Vol 55, No 10 (2019)
- Pages: 925-932
- Section: Article
- URL: https://journals.rcsi.science/1023-1935/article/view/191002
- DOI: https://doi.org/10.1134/S1023193519100082
- ID: 191002
Cite item
Abstract
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).
About the authors
F. Smaili
Laboratory of Electrochemistry-Corrosion, Metallurgy and Inorganic Chemistry, Faculty of Chemistry, (USTHB) BP 32
Author for correspondence.
Email: rahmasmaili@yahoo.fr
Algeria, El Alia Bab Ezzouar, Algiers, 16111
A. Benchettara
Laboratory of Electrochemistry-Corrosion, Metallurgy and Inorganic Chemistry, Faculty of Chemistry, (USTHB) BP 32
Email: rahmasmaili@yahoo.fr
Algeria, El Alia Bab Ezzouar, Algiers, 16111