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In this study,the Ti/SnO2-RuO2 electrodes with different Yb contents were prepared by sol-gel method and thermal decomposition method,and the surface morphology and crystal structure of the electrodes were characterized by scanning electron microscopy(SEM),atomic force microscopy(AFM)and X-ray diffraction(XRD),the electrochemical properties of the electrodes were tested by linear sweep vol-tammetry(LSV)and cyclic voltammetry(CV).The electrochemical oxidation device was constructed with Yb-doped Ti/SnO2-RuO2 electrode as the anode and titanium plate as the cathode,and the electro-chemical oxidation effect and product changes of the anode on coking wastewater were investigated.The results show that the surface of the electrode is flat with high crystallinity of SnO2 and RuO2 crystals at 1.5%Yb doping,and the LSV and CV curves indicate that the Yb doping of 1.5%increases the oxygen precipitation potential and electrocatalytic oxidation activity of the electrode.When the electrode with Yb doping of 1.5%is the anode with current density of 10 mA/cm2 electrochemical oxidation time of 30 min,the electrode can remove chemical oxygen demand(COD)up to 85.06%,total organic carbon(TOC)up to 60.59%and UV254 from 1.594 to 0.507 for coking wastewater.Gas chromatography(GC-MS),UV-vis and three-dimensional fluorescence results of coking wastewater before and after treatment show that large toxic substances in coking wastewater are degraded to low toxic organic substances,and most soluble organic substances are degraded and transformed.This study provides the possibility of basic research for the engineering practice of electrochemical oxidation for the treatment of coking wastewater.
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篇名 Preparation of Ti-based Yb-doped SnO2-RuO2 electrode and electrochemical oxidation treatment of coking wastewater
来源期刊 稀土学报(英文版) 学科
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年,卷(期) 2022,(5) 所属期刊栏目 RARE EARTH CATALYSIS
研究方向 页码范围 763-771
页数 9页 分类号
字数 语种 英文
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期刊影响力
稀土学报(英文版)
月刊
1002-0721
11-2788/TF
大16开
北京新街口外大街2号中国稀土学报编辑部
2-613
1990
eng
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4423
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总被引数(次)
17485
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