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To enhance the degradation efficiency as purpose, the Gd2O3and La2O3 were doped in the lead dioxide electrode by the thermal decomposition and electro-deposition technique for the treatment of simulated wastewater containing cationic red X-GRL (X-GRL). The optimized molar ratio of Pb:Gd:La of 200mol:3mol:1mol, and the optimal degradation conditions of current density 50 mA/cm2, 0.1 mol/L Na2SO4, initial quality concentration of X-GRL 100 mg/L, after 2 h degradation, the X-GRL and TOC removal of reached 97.81% and 51.28%, respectively. The efficiency of combustion (ηc) of rare earth co-doped electrode was increased by 0.257 than that of un-doped electrode.
rare earth co-doped; PbO2 electrode; Gd2O3; La2O3; cationic red X-GRL
The authors are grateful for the financial support provided by the National Natural Science Foundation of China (21207028). the Zhejiang Provincial Natural Science Foundation of China (No. LY15B070013) and the Science Foundation of Education Bureau of Zhejiang Province, China (No.Y201224448).
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