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[期刊论文]

Manganese oxides activated peroxymonosulfate for ciprofloxacin removal: Effect of oxygen vacancies and chemical states

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author:

Chi, Yuan (Chi, Yuan.) [1] | Wang, Peng (Wang, Peng.) [2] | Lin, Mei (Lin, Mei.) [3] | Unfold

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EI

Abstract:

Ciprofloxacin (CIP) as an anti-inflammatory drug is frequently detected in various water resources. Recently, Sulfate Radical-based advanced oxidation processes with manganese oxides have been recognized as a highly effective method for CIP degradation. Herein, Ε-MnO2 was obtained through a convenient drying process. After different atmospheric treatments, MnO and Mn2O3 were fabricated for subsequent degradation experiments. The results show that MnO exhibits better catalytic activity than Mn2O3, with high removal efficiency of almost 84.3% for CIP. Quenching test and electron paramagnetic resonance spectra confirm that 1O2 is the dominant species during reaction, while ·OH and SO4·- play a supporting role. A related discussion about the role of valence states of Mn and oxygen vacancies is presented, which can provide a theoretical basis for further development of Mn/peroxymonosulfate system. © 2022 Elsevier Ltd

Keyword:

Antibiotics Catalyst activity Catalytic oxidation Electron spin resonance spectroscopy Manganese oxide Oxides Oxygen vacancies Paramagnetic resonance Sulfur compounds Water resources

Community:

  • [ 1 ] [Chi, Yuan]College of Materials Science and Engineering, Fuzhou University, Fuzhou; 350108, China
  • [ 2 ] [Wang, Peng]College of Materials Science and Engineering, Fuzhou University, Fuzhou; 350108, China
  • [ 3 ] [Lin, Mei]College of Environment Science and Engineering, Fujian Normal University, Fujian Province, Fuzhou; 350007, China
  • [ 4 ] [Lin, Cong]College of Materials Science and Engineering, Fuzhou University, Fuzhou; 350108, China
  • [ 5 ] [Gao, Min]College of Materials Science and Engineering, Fuzhou University, Fuzhou; 350108, China
  • [ 6 ] [Zhao, Chunlin]College of Materials Science and Engineering, Fuzhou University, Fuzhou; 350108, China
  • [ 7 ] [Wu, Xiao]College of Materials Science and Engineering, Fuzhou University, Fuzhou; 350108, China

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Source :

Chemosphere

ISSN: 0045-6535

Year: 2022

Volume: 299

8 . 8

JCR@2022

8 . 1 0 0

JCR@2023

ESI HC Threshold:64

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 15

30 Days PV: 3

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