Abstract：Ti/SnO2-Sb/Ce-PbO2 electrode was prepared by sol-gel method and electrochemical deposition method. The surface morphology, crystal structure and electrochemical performance of the prepared electrode were analysed, and the degradation effect of the electrode on methyl orange and 4-nitrophenol was further investigated. The results showed that the Ti/SnO2-Sb/Ce-PbO2 electrode has a more stable structure, has a better electrochemical activity compared with other electrodes, and that its oxygen evolution potential can reach 1.56V. The optimal operating conditions were set at an interelectrode spacing of 2cm, at a current density of 30mA/cm2, at a concentration of the target pollutant of 100mg/L, and at an electrolyte concentration of 0.10mol/L. As electrolysis time reached 120min with the Ti/SnO2-Sb/Ce-PbO2 electrode, the removal efficiency of methyl orange and 4-nitrophenol reached 99.59% and 96.16%, respectively. After 180min of degradation, the TOC removal efficiency reached 56.71% and 54.87%, respectively. The results provide a technical support for the Ti/SnO2-Sb/Ce-PbO2 electrode to degrade organic pollutants.
岳文清, 倪月, 孙则朋, 刘奋武, 毕文龙, 陈姿名, 魏意文. 改性钛基PbO2电极对有机污染物的降解性能——以甲基橙和4-硝基苯酚为例[J]. 中国环境科学, 2022, 42(2): 706-716.
YUE Wen-qing, NI Yue, SUN Ze-peng, LIU Fen-wu, BI Wen-long, CHEN Zi-ming, WEI Yi-wen. Degradation of organic pollutants by modified titanium based PbO2 electrode: Taking methyl orange and 4-nitrophenol as examples. CHINA ENVIRONMENTAL SCIENCECE, 2022, 42(2): 706-716.
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