Magnetic CuFe2O4 nanoparticles anchored on N-doped carbon for activated peroxymonosulfate removal of oxytetracycline from water: Radical and non-radical pathways

被引：17

作者：

Liu X. ^{[1
]}

Pei Y. ^{[1
]}

Cao M. ^{[1
]}

Yang H. ^{[1
]}

Li Y. ^{[1
]}

机构：

[1] School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi

来源：

Chemosphere | 2023年 / 334卷

关键词：

Degradation pathway; Metallic oxides-carbon catalyst; Oxytetracycline; Radical and non-radical; Toxicity assessment;

D O I：

10.1016/j.chemosphere.2023.139025

中图分类号：

学科分类号：

摘要：

In this work, magnetic CuFe2O4 was prepared for the removal of oxytetracycline (OTC) by a self-propagating combustion synthesis method. Almost complete degradation (99.65%) of OTC was achieved within 25 min at [OTC]0 = 10 mg/L, [PMS]0 = 0.05 mM, CuFe2O4 = 0.1 g/L under pH = 6.8 at 25 °C for deionized water. Specially, the addition CO32− and HCO3− induced the CO3•- appearance enhancing the selective degradation to electron-rich OTC molecule. The prepared CuFe2O4 catalyst exhibited desirable OTC removal rate (87.91%) even in hospital wastewater. The reactive substances were analyzed by free radical quenching experiments and electron paramagnetic resonance (EPR), and the results demonstrated that 1O2 and •OH were the main active substances. Liquid chromatography-mass spectrometry (LC-MS) was used to analyze the intermediates produced during the degradation of OTC and thus to speculate on the possible degradation pathways. Ecotoxicological studies were conducted to unveil large-scale application prospect. © 2023 Elsevier Ltd

引用

共 2 条

[1] Anchoring CuFe2O4 nanoparticles into N-doped carbon nanosheets for peroxymonosulfate activation: Built-in electric field dominated radical and non-radical process
Dong, Zheng-Tao
Niu, Cheng-Gang
Guo, Hai
Niu, Huai-Yuan
Liang, Song
Liang, Chao
Liu, Hui-Yun
Yang, Ya-Ya
CHEMICAL ENGINEERING JOURNAL, 2021, 426
[2] Mechanisms and degradation pathways of doxycycline hydrochloride by Fe3O4 nanoparticles anchored nitrogen-doped porous carbon microspheres activated peroxymonosulfate
Xu H.
Zhu K.
Alharbi N.S.
Rabah S.O.
Chen C.
Chemosphere, 2023, 333

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