Magnetic manganese ferrite spinel decorated with CeO2 （MnFe2O4@CeO2） for activation of peracetic acid to degrade tetracycline in water

SUN Na; YANG Yuqing; LIU Zhanmeng; YAO Qianhui; CUI Peitao; WANG Liqing

doi:10.13205/j.hjgc.202601010

Volume 44 Issue 1

Jan. 2026

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SUN Na, YANG Yuqing, LIU Zhanmeng, YAO Qianhui, CUI Peitao, WANG Liqing. Magnetic manganese ferrite spinel decorated with CeO2 （MnFe2O4@CeO2） for activation of peracetic acid to degrade tetracycline in water[J]. ENVIRONMENTAL ENGINEERING , 2026, 44(1): 89-100. doi: 10.13205/j.hjgc.202601010

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SUN Na, YANG Yuqing, LIU Zhanmeng, YAO Qianhui, CUI Peitao, WANG Liqing. Magnetic manganese ferrite spinel decorated with CeO₂ （MnFe₂O₄@CeO₂） for activation of peracetic acid to degrade tetracycline in water[J]. ENVIRONMENTAL ENGINEERING , 2026, 44(1): 89-100. doi: 10.13205/j.hjgc.202601010

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Magnetic manganese ferrite spinel decorated with CeO₂ （MnFe₂O₄@CeO₂） for activation of peracetic acid to degrade tetracycline in water

doi: 10.13205/j.hjgc.202601010

1. School of Planning and Design, East China Jiaotong University, Nanchang 330013, China;
2. School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang 330013, China;
3. School of Civil Engineering and Architecture, Nanchang Institute of Technology, Nanchang 330099, China

Received Date: 2024-11-07
Available Online: 2026-02-26
Publish Date: 2026-01-22

Abstract

Abstract

Heterogeneous catalysts have shown great potential in the activation of peracetic acid （PAA） for the degradation of antibiotics in water. Taking tetracycline in water as the object， this study prepared magnetic MnFe₂O₄@CeO₂ composite materials via a one-step low-temperature co-precipitation method， and characterized them using SEM， BET， VSM， FT-IR， and XPS. The effects of Mn/Ce molar ratio， PAA concentration， catalyst dosage， initial pH， co-existing anions， and humic acid concentration on catalytic degradation efficiency of tetracycline （TC） by the MnFe₂O₄@CeO₂/PAA system were investigated. The results indicated that at an initial TC concentration of 10 mg/L， a Ce/Mn molar ratio of 1∶3， pH of 7， and PAA concentration of 200 μmol/L， with a MnFe₂O₄@CeO₂ dosage of 0.1 g/L， the system could degrade 97.3% of TC within 30 minutes. MnFe₂O₄@CeO₂ exhibited a good degradation effect on TC within a pH range of 3 to 9. Anions and humic acid had varying degrees of inhibitory effects on the degradation efficiency of the MnFe₂O₄@CeO₂/PAA system. Electron paramagnetic resonance （EPR）， quenching experiments， and XPS analysis collectively revealed the degradation mechanism of TC by the MnFe₂O₄@CeO₂/PAA system， where Mn and Ce are the key elements to activating PAA. CH₃C（O）OO•， •OH， and ¹O₂ were the main reactive species involved in TC degradation， with CH₃C（O）OO• playing a primary role. Additionally， the MnFe₂O₄@CeO₂/PAA system was tested for its broad applicability in different real water bodies and against other refractory organic pollutants. Finally， the stability and reusability of the MnFe₂O₄@CeO₂ composite materials were assessed. The magnetic MnFe₂O₄ loaded with CeO₂ reduced the leaching of metal ions and exhibited good stability. After five cycles of reuse， the TC removal rate of the MnFe₂O₄@CeO₂/PAA system remained at 86.9%.
- magnetic manganese ferrite （MnFe₂O₄）,
- cerium dioxide （CeO₂）,
- peracetic acid,
- antibiotic,
- tetracycline,
- advanced oxidation

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References(37)

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