Modified carbon felt made using CexA1?xO2 composites as a cathode in electro-Fenton system to degrade ciprofloxacin

Yi Li; Jingjing Han; Xueyue Mi; Xinqiang Mi; Yanan Li; Suge Zhang; Sihui Zhan

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Modified carbon felt made using Ce_xA_1?xO₂ composites as a cathode in electro-Fenton system to degrade ciprofloxacin

机译：使用Ce _{x A _{1？ x O _{2 复合材料制成的改性碳毡Fenton系统中的阴极以降解环丙沙星}}}

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Carbon felt (CF) was modified by Ce_xA_1?xO₂ (A = Zr, Cu and Ni) and the role of these Ce_xA_1?xO₂/CF (A = Zr, Cu and Ni) cathode materials in the oxidative degradation of antibiotic ciprofloxacin (CIP) was investigated in the electro-Fenton system. SEM, BET, TEM, XPS, TOC, HPLC-MS, CV and EIS were used to understand the characteristics of these cathode materials. The CIP degradation efficiency of the Ce_xA_1?xO₂/CF (A = Zr, Cu and Ni) cathode was better than that of pure CF, and 2.0 wt% Ce_0.75Zr_0.25O₂/CF was the most effective cathode material for degradation of CIP. It reached 100% degradation efficiency of CIP after 1 h and almost total mineralization (97.45%) after 6 h, owing to synergistic effects from the predominant role of homogeneous ˙OH produced electrocatalytically through the Fenton reaction of Fe2+ and H₂O₂ and heterogeneous ˙OH produced via the Fenton-like reaction of Ce3+ and H₂O₂ and the electrocatalytic activity of Ce_0.75Zr_0.25O₂ composite and the strong electrosorption of carbon felt. A possible path of CIP degradation was proposed in the paper. 展开▼

机译：碳毡（CF）被Ce _{x A _{1？ x 改性sub> O _{2 （A = Zr，Cu和Ni）以及这些Ce _{x A _{1？ x O _{2 / F（A = Zr，Cu和Ni）阴极材料在电芬顿系统中研究了抗生素环丙沙星（CIP）的氧化降解。 SEM，BET，TEM，XPS，TOC，HPLC-MS，CV和EIS用于了解这些正极材料的特性。 Ce _{x A _{1？ x 的CIP降解效率 O _{2 / CF（A = Zr，Cu和Ni）阴极比纯CF阴极好，Ce 0.75 Zr _{0.25 O _{2 / CF是最有效的阴极材料用于降级CIP。由于Fe 2的Fenton反应以电催化方式产生的均相˙OH的主要协同作用，在1小时后CIP的降解效率达到100％，在6小时后几乎达到了全部矿化（97.45％）。 + 和H _{2 O _{2 以及异构的˙OH生成的通过 Ce 3 + 和H _{2 O 2 和Ce _{0.75 Zr _{0.25 O <的电催化活性small> _{2 复合材料和碳毡的强电吸附。本文提出了CIP降解的可能途径。}}}}}}}}}}}}}}}}} 展开▼

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《RSC Advances》 |2017年第43期|共14页

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Yi Li; Jingjing Han; Xueyue Mi; Xinqiang Mi; Yanan Li; Suge Zhang; Sihui Zhan;
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中图分类化学;

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Modified carbon felt made using CexA1?xO2 composites as a cathode in electro-Fenton system to degrade ciprofloxacin

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Modified carbon felt made using Ce_xA_1?xO₂ composites as a cathode in electro-Fenton system to degrade ciprofloxacin