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史京转, 魏红, 周孝德, 程小莉, 李克斌. CoFe2O4增强超声/H2O2降解环丙沙星[J]. 环境化学, 2018, 37(10): 2237-2246. doi: 10.7524/j.issn.0254-6108.2018030401
引用本文: 史京转, 魏红, 周孝德, 程小莉, 李克斌. CoFe2O4增强超声/H2O2降解环丙沙星[J]. 环境化学, 2018, 37(10): 2237-2246. doi: 10.7524/j.issn.0254-6108.2018030401
shu
SHI Jingzhuan, WEI Hong, ZHOU Xiaode, CHENG Xiaoli, LI Kebin. Enhanced ultrasonic/H2O2 degradation of ciprofloxacin using CoFe2O4[J]. Environmental Chemistry, 2018, 37(10): 2237-2246. doi: 10.7524/j.issn.0254-6108.2018030401
Citation: SHI Jingzhuan, WEI Hong, ZHOU Xiaode, CHENG Xiaoli, LI Kebin. Enhanced ultrasonic/H2O2 degradation of ciprofloxacin using CoFe2O4[J]. Environmental Chemistry, 2018, 37(10): 2237-2246. doi: 10.7524/j.issn.0254-6108.2018030401
shu

CoFe2O4增强超声/H2O2降解环丙沙星

  • 1.

    西安理工大学, 省部共建西北旱区生态水利国家重点实验室, 西安, 710048;

  • 2.

    西北大学化学与材料科学学院, 合成与天然功能分子化学教育部重点实验室, 西安, 710069;

  • 3.

    渭南市环境科学研究所, 渭南, 714000

  • 基金项目:

    陕西省自然科学基金（2017JM5082），陕西省水利科技项目（2013slkj-07）和环境工程国家重点学科培育学科项目（106-5X1204）资助.

Enhanced ultrasonic/H2O2 degradation of ciprofloxacin using CoFe2O4

  • 1.

    State key laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi'an University of Technology, Xi'an, 710048, China;

  • 2.

    Key Laboratory of Synthetic And Natural Functional Molecule Chemistry of Ministry of Education, School of Chemistry and Material Science, Northwest University, Xi'an, 710069, China;

  • 3.

    Weinan Institute of Environmental Science, Weinan, 714000, China

  • Fund Project: Supported by the Province Natural Science Foundation of Shaanxi(2017JM5082), the Province Water Conservancy Science and Technology of Shaanxi(2013slkj-07) and the National Key Subject Cultivation Subject Project of Environmental Engineering (106-5X1204).

  • 摘要: 实验合成磁性CoFe2O4，采用X射线衍射仪（XRD）、扫描电镜（SEM）和X射线能谱仪（EDS）对其进行表征，研究其催化超声/H2O2（US/H2O2）降解环丙沙星的效果和机理.实验考察了CoFe2O4和H2O2添加浓度、初始pH值、不同形态氮、氯离子等因素对环丙沙星降解效果的影响.并以大肠杆菌为指示菌种，分析了CoFe2O4催化US/H2O2降解环丙沙星过程中抑菌性的变化.结果表明，CoFe2O4能够有效增强US/H2O2降解环丙沙星，CoFe2O4和H2O2浓度分别为0.04 g·L-1和1.0 mmol·L-1、pH=3.0、反应60 min环丙沙星的降解率达到85.26%；与NH4+相比，NO3-促进环丙沙星的降解，NO2-和Cl-不同程度抑制环丙沙星的降解.自由基抑制结果表明，CoFe2O4增强US/H2O2降解环丙沙星主要在于·OH的生成.CoFe2O4稳定性结果表明，5次反复实验后，环丙沙星60 min的降解率仅降低了4%左右，催化剂的重复利用性较高.琼脂扩散实验表明，CoFe2O4在催化US/H2O2降解环丙沙星的同时，CoFe2O4/US/H2O2体系能够完全去除其对大肠杆菌的抑菌性.
    Abstract: Magnetic iron cobalt CoFe2O4 was synthesized, characterized by XRD、SEM and EDS methods. Its enhancement and mechanism on ciprofloxacin degradation under ultrasound/H2O2 system were studied. The parameters such as CoFe2O4 and H2O2 concentration, initial pH value, different forms of nitrogen and chloride ions on ciprofloxacin degradation were investigated. In addition, ciprofloxacin antibacterial activity on E.coli was analyzed. The results indicated that CoFe2O4 enhanced ciprofloxacin degradation under US/H2O2 system effectively. Ciprofloxacin degradation rate reached 85.26% in 60 min when CoFe2O4 and H2O2 concentration were 0.04 g·L-1 and 1.0 mmol·L-1, respectively, initial pH was 3.0. Compared with the effect of NH4+, NO3- promoted ciprofloxacin degradation while NO2- and Cl- showed inhibition. Radical scavenging experiments indicated that the catalytic enhancement was mainly attributed to the generation of hydroxyl radical (·OH). The repeated tests showed that CoFe2O4 presented good stability. Ciprofloxacin degradation rate only decreased by 4% even after five cycles. Agar diffusion test revealed that CoFe2O4 effectively enhanced ciprofloxacin degradation under US/H2O2 system, and ciprofloxacin antibacterial activity on E.coli was completely removed.
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  • 收稿日期:  2018-03-04
  • 刊出日期:  2018-10-15
史京转, 魏红, 周孝德, 程小莉, 李克斌. CoFe2O4增强超声/H2O2降解环丙沙星[J]. 环境化学, 2018, 37(10): 2237-2246. doi: 10.7524/j.issn.0254-6108.2018030401
引用本文: 史京转, 魏红, 周孝德, 程小莉, 李克斌. CoFe2O4增强超声/H2O2降解环丙沙星[J]. 环境化学, 2018, 37(10): 2237-2246. doi: 10.7524/j.issn.0254-6108.2018030401
shu
SHI Jingzhuan, WEI Hong, ZHOU Xiaode, CHENG Xiaoli, LI Kebin. Enhanced ultrasonic/H2O2 degradation of ciprofloxacin using CoFe2O4[J]. Environmental Chemistry, 2018, 37(10): 2237-2246. doi: 10.7524/j.issn.0254-6108.2018030401
Citation: SHI Jingzhuan, WEI Hong, ZHOU Xiaode, CHENG Xiaoli, LI Kebin. Enhanced ultrasonic/H2O2 degradation of ciprofloxacin using CoFe2O4[J]. Environmental Chemistry, 2018, 37(10): 2237-2246. doi: 10.7524/j.issn.0254-6108.2018030401
shu

CoFe2O4增强超声/H2O2降解环丙沙星

  • 1.  西安理工大学, 省部共建西北旱区生态水利国家重点实验室, 西安, 710048;
  • 2.  西北大学化学与材料科学学院, 合成与天然功能分子化学教育部重点实验室, 西安, 710069;
  • 3.  渭南市环境科学研究所, 渭南, 714000
  • 收稿日期:  2018-03-04
基金项目:

陕西省自然科学基金（2017JM5082），陕西省水利科技项目（2013slkj-07）和环境工程国家重点学科培育学科项目（106-5X1204）资助.

摘要: 实验合成磁性CoFe2O4，采用X射线衍射仪（XRD）、扫描电镜（SEM）和X射线能谱仪（EDS）对其进行表征，研究其催化超声/H2O2（US/H2O2）降解环丙沙星的效果和机理.实验考察了CoFe2O4和H2O2添加浓度、初始pH值、不同形态氮、氯离子等因素对环丙沙星降解效果的影响.并以大肠杆菌为指示菌种，分析了CoFe2O4催化US/H2O2降解环丙沙星过程中抑菌性的变化.结果表明，CoFe2O4能够有效增强US/H2O2降解环丙沙星，CoFe2O4和H2O2浓度分别为0.04 g·L-1和1.0 mmol·L-1、pH=3.0、反应60 min环丙沙星的降解率达到85.26%；与NH4+相比，NO3-促进环丙沙星的降解，NO2-和Cl-不同程度抑制环丙沙星的降解.自由基抑制结果表明，CoFe2O4增强US/H2O2降解环丙沙星主要在于·OH的生成.CoFe2O4稳定性结果表明，5次反复实验后，环丙沙星60 min的降解率仅降低了4%左右，催化剂的重复利用性较高.琼脂扩散实验表明，CoFe2O4在催化US/H2O2降解环丙沙星的同时，CoFe2O4/US/H2O2体系能够完全去除其对大肠杆菌的抑菌性.

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