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Fabrication of a Novel Cerium Doped Ti/nano TiO2/PbO2 Electrode with Improved Electrocatalytic Activity and its Application in Organic Degradation

Mai Xu1Fengwu Wang2Ping Hong2Yijun Wei2Xian Liang2

1. School of Chemistry and Material Science,University of Science and Technology of China2. School of Chemistry and Material Engineering,Huainan Normal University

摘要:In this work,a novel cerium doped Ti/nano TiO2/PbO2 electrode(Ti/Ce-nano TiO2/Ce-PbO2) was successfully prepared using sol-gel and electrodeposition.It was found that the cerium doped nano TiO2 as underlayer could not only increase electrocatalytic property but could also withstand corrosion of the electrode.The surface morphology and the structure of the prepared thin film were characterized by scanning electron microscopy(SEM),X-ray photoelectron spectroscopy(XPS) and X-ray diffraction(XRD),respectively.SEM images indicatedthat the surface of Ti/Ce-nano TiO2/Ce-PbO2 electrode was more uniform and had smaller particles.Cyclic voltammetry(CV) and electrochemical impedance spectroscopy(EIS) were also used to study electrocatalytic activity of electrodes.The large electrochemical active surface area and small charge transfer resistance resulted in the high electrocatalytic activity of Ti/Ce-nano TiO2/Ce-PbO2.Electrocatalytic oxidation of methyl orange(MO) as a model dye wastewater in aqueous solution was studied to evaluate the potential applications of this electrode in environmental science.The chemical oxygen demand(COD) removal and average current efficiencies were about 96.6% and 58.2% for degrading 50 mg L-1MO at a current density of 50 m A cm-2 and treatment time of 120 min.The good electrocatalytic performance of Ti/Ce-nano TiO2/Ce-PbO2 makes it a promising anode as low-cost dimensionally stable anodes(DSAs) for treatment of organic pollutants in aqueous solution.
会议名称:

The 6th International Conference on Environmental Technology and Knowledge Transfer

会议时间:

2016-05-19

会议地点:

中国安徽合肥

  • 专辑:

    工程科技Ⅰ辑

  • 专题:

    化学; 环境科学与资源利用

  • 分类号:

    O643.36;X703

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