Synergistic degradation of antimicrobial agent ciprofloxacin in water by using 3D CeO₂/RGO composite as cathode in electro-Fenton system

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• 作者：Yi Li^a ; ^{liyi@tju.edu.cn} ; Jingjing Han^a ; Baorong Xie^a ; Yanan Li^a ; Sihui Zhan^b ; Yang Tian^c
• 关键词：CeO2/RGO ; Electro-Fenton ; Degradation
• 刊名：Journal of Electroanalytical Chemistry
• 出版年：2017
• 出版时间：1 January 2017
• 年：2017
• 卷：784
• 期：Complete
• 页码：6-12
• 全文大小：1067 K
• 卷排序：784

文摘

There is a growing body of antibiotics which are accumulated after usage by humans and animals for health reasons in the environment. Here, a 3D CeO2/RGO composite was obtained by using hydrothermal self-assembly synthesis method and in-situ deposition method. 3D CeO2/RGO composite was used firstly as cathode for efficient degradation of antimicrobial agent ciprofloxacin (CIP) in electro-Fenton system. The obtained composite was characterized by XRD, SEM, BET, TEM, HPLC-MS, CV and EIS. Synergistic effects from the electrosorption property of CIP on 3D CeO2/RGO and the electrocatalytic activity of CeO2 and the strong oxidizing property of hydroxyl radical (·OH) from electro-generated H2O2 in situ promote to reach about 100% efficient degradation of CIP. With the hydrothermal reaction time of 8 h and a current of 400 mA, about 100% antibiotics can be cleaned, and 91% TOC can be removed after 6.5 h at the experiment condition of pH = 3 and 0.1 mmol·L− 1 Fe2 + in 0.05 mol·L− 1 Na2SO4 solution. 3D CeO2/RGO composite can be used effectively as cathode in the electro-Fenton treatment for the deep degradation of CIP.