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).

中文翻译：

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PbO 2在水净化中的电催化效率

摘要

在这项工作中，通过恒电位法在0.5 mol / L硫酸溶液中于1.3 V（ECS）持续30分钟，实现了Pb电极上二氧化铅的电沉积。XRD的结果表明的PbO的晶体结构₂在酸性溶液中是纯β-PBO ₂。三的electrodegradation（4-（二甲基氨基）苯基）methylium氯（甲基紫10B）染料在0.1mol / L的硫酸钠水溶液使用β-PBO，研究了恒电位法₂为阳极。的甲基紫10B成功通过从水的氧化电致上的Pb /β-PBO羟基自由基氧化₂电极表面。甲基紫10B的阳极氧化遵循拟一级反应动力学。的时间和施加电势对甲基紫10B的在铅/β-PBO电化学降解显著效果₂ 10.5克降解速率/（米电极²天）。