文献详情
MnCeOx with high efficiency and stability for activating persulfate to degrade AO7 and ofloxacin
文献类型：期刊
通讯作者：Zhang, GM (reprint author), Hebei Univ Technol, Sch Energy & Environm Engn, Tianjin 300130, Peoples R China.; Zhu, J (reprint author), Shenzhen Polytech, Sch Construct & Environm Engn, Shenzhen 518055, Peoples R China.
期刊名称：ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY影响因子和分区
年：2020
卷：191
ISSN：0147-6513
关键词：MnCeOx composite; Persulfate; Activation mechanism; Actual water; Degradation pathway
摘要：An efficient MnCeOx composite was successfully synthesized for activation of persulfate to degrade acid orange 7 (AO7) and ofloxacin. Pollutants degradation efficiencies with different catalytic systems were investigated. Results showed the performance of MnCeOx was better than MnOx, CeO2 and MnOx + CeO2. Thus, there was a clear synergistic effect (Se) between Mn and Ce in the composite, and the Se was 73.8% for AO7 and 39.6% for ofloxacin. In addition, AO7 removal fitted 1st order reaction whil ...More
An efficient MnCeOx composite was successfully synthesized for activation of persulfate to degrade acid orange 7 (AO7) and ofloxacin. Pollutants degradation efficiencies with different catalytic systems were investigated. Results showed the performance of MnCeOx was better than MnOx, CeO2 and MnOx + CeO2. Thus, there was a clear synergistic effect (Se) between Mn and Ce in the composite, and the Se was 73.8% for AO7 and 39.6% for ofloxacin. In addition, AO7 removal fitted 1st order reaction while ofloxacin removal fitted 2nd order reaction in MnCeOx/persulfate system. Moreover, MnCeOx/persulfate system showed high efficiency in pH range of 5-9. Mechanism analysis showed that SO4 center dot(-) and center dot OH on the surface of the catalyst were the main active species, and O-2 center dot(-) also played an important role in pollutants degradation. Furthermore, MnCeOx showed high activity in actual water. Finally, the possible degradation pathway of ofloxacin was proposed according to the high performance liquid chromatography-mass spectrometry result. Overall, this study provides an efficient and stable catalyst to activate persulfate to degrade refractory pollutants. ...Hide

DOI：10.1016/j.ecoenv.2020.110228
百度学术：MnCeOx with high efficiency and stability for activating persulfate to degrade AO7 and ofloxacin
语言：外文
基金：National Natural Science Foundation of ChinaNational Natural Science Foundation of China [51778374]; National Water Pollution Control and Treatment Science and Technology Major Project of China [2018ZX07110003]; Shenzhen Technology Innovation Committee [KJYY2018020618 0737010]
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