Application of response surface methodology in electrochemical degradation of amoxicillin with Cu-PbO2 electrode: Optimization and mechanism
Application of response surface methodology in electrochemical degradation of amoxicillin with Cu-PbO2 electrode: Optimization and mechanism
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DOI：
10.1016/j.seppur.2020.117109
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发表时间：
2020-11-01
影响因子：
8.6
通讯作者：
Dai, Qizhou
中科院分区：
文献类型：
--
作者：
Hu, Jun;Bian, Xinze;Dai, Qizhou
采用电沉积法制备了Cu掺杂PbO2电极，并将其用于阿莫西林（AMX）的电化学氧化降解，结果表明Cu掺杂PbO2电极对阿莫西林的降解效果优于未掺杂PbO2电极。采用响应面法建立了优化模型。考察了电流密度、pH值和AMX初始浓度等因素对AMX降解的影响。计算了阿莫西林在水溶液中的电化学氧化过程中的燃烧效率，发现Cu掺杂的PbO2电极对阿莫西林的电化学氧化有促进作用。通过对羟基自由基和燃烧效率的分析，探讨了Cu掺杂PbO2电极的增强机理。并对阿莫西林的降解机理进行了探讨。本文可为阿莫西林污染控制提供基础数据和技术参考。
In this study, Cu doped PbO2 electrode was prepared by electrodeposition and used for electrochemical oxidation degradation of amoxicillin (AMX), which showed that the effect of Cu doped PbO2 electrode was better than that of undoped PbO2 electrode in degrading amoxicillin. An optimized model was setup with the help of response surface method (RSM). The optimal values of experimental parameters and the interactions between the parameters were explored, including current density, pH and initial AMX concentration. The combustion efficiency was calculated in the electrochemical oxidation of amoxicillin in aqueous solution and the enhancement was found with Cu doped PbO2 electrode. The enhanced mechanism with Cu doped PbO2 electrode was discussed based on the analysis of hydroxyl radicals and the combustion efficiency. The mechanism of amoxicillin degradation was discussed. This paper can provide basic data and technique reference for amoxicillin pollution control.