Electrocatalytic Efficiency of PbO2 in Water Decontamination
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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).
Keywords:Pb/PbO2 electrode electrochemical oxidation methyl violet 10B decontamination
The author would like to thank Dr B. Bellal of laboratory of Storage and Valorization of Renewable Energies, Faculty of the Chemistry, U.S.T.H.B for his assistance in the UV–Visible spectroscopic analysis of the solutions before and after the degradation of the dye.
All authors made substantial contributions to conception and design, analysis, and interpretation of data, and edited the manuscript and approved the final version.
CONFLICT OF INTEREST
The authors declare that they have no conflict of interest.
The work was supported financially by the National Committee for Evaluation and Programmation of University Research (CNEPRU).
COMPLIANCE WITH STANDARDS OF RESEARCH INVOLVING ANIMALS
This article does not contain any studies involving animals performed by any of the authors.
COMPLIANCE WITH STANDARDS OF RESEARCH INVOLVING HUMANS AS SUBJECTS
This article does not contain any studies with human participants performed by any of the authors.
- 5.Cavalcanti, E.B., Garcia-Segura, S., Centellas, F., and Brillas, E., Electrochemical incineration of omeprazole in neutral aqueous medium using a platinum or boron-doped diamond anode: degradation kinetics and oxidation products, Water Res., 2013, vol. 47, p. 1803.PubMedCrossRefPubMedCentralGoogle Scholar
- 6.Jager, D., Kupka, D., Vaclavikova, M., Ivanicova, L., and Gallios, G., Degradation of reactive black 5 by electrochemical oxidation, Chemosphere, 2017, vol. 120, p. 405.Google Scholar
- 8.Bassuoni, D.G., Hamad, H.A., El-Ashtoukhy, E-S.Z., Amin, N.K., and Abd El-Latif, M.M., Comparative performance of anodic oxidation and electrocoagulation as clean processes for electrocatalytic degradation of diazo dye Acid Brown 14 in aqueous medium, J. Hazard. Mater., 2017, vol. 335, p. 178.CrossRefGoogle Scholar
- 9.Dusan Z, M., Milka L, A. I., Antonije E, O., and Branimir N, G., Decolorization of textile dye CI Basic Yellow 28 with electrochemically generated active chlorine, Chem. Eng. J., 2012, vol. 206, p. 151.Google Scholar
- 22.Chianca de Mouraa, D., Antonio Quirozb, M., Ribeiro da Silvaa, D., Salazarc, R., and Martínez-Huitlea, C.A., Electrochemical degradation of Acid Blue dye using TiO2-nanotubes decorated with PbO2 as anode, Nanotechnol. Monit. Manage, 2016, vol. 5, p. 13.Google Scholar
- 25.Sirés, I., Brillas, E., Cerisola, G., and Panizza, M., Comparative depollution of mecopropaqueous solutions by electrochemical incineration using BDD and PbO2 as high oxidation power anodes, Electroanal. Chem., 2008, vol. 38, p. 923.Google Scholar
- 33.Silva Ferreira, B.C., Teodoro, F.S., Mageste, A.B., Gil, L.F., Pereira de Freitas, R., and Gurgel, L.V.A., Application of a new carboxylate-functionalized sugarcane bagasse for adsorptive removal of crystal violet from aqueous solution: kinetic, equilibrium and thermodynamic studies, Ind. Crops. Prod., 2015, vol. 65, p. 521.CrossRefGoogle Scholar
- 38.Bingqian, D., Zhen, C., Qiang, Y., Wei, Z., Wen, Y., and Zhongcheng, G., Effect of temperature on the residual stress of a β-PbO2 coating, Surf. Eng., 2017, vol. 34, p. 689.Google Scholar