Jump to main content
Jump to site search

Issue 2, 2019
Previous Article Next Article

Evaluation of ciprofloxacin destruction between ordered mesoporous and bulk NiMn2O4/CF cathode: efficient mineralization in a heterogeneous electro-Fenton-like process

Author affiliations

Abstract

An electro-Fenton-like process was extensively applied to eliminate ciprofloxacin antibiotics pollution in water systems. Here, we developed ordered meso-NiMn2O4 nanoparticles as an efficient electro-Fenton-like catalyst to modify a CF cathode for the degradation and mineralization of ciprofloxacin (CIP). It was found that the carbon felt (CF) cathode modified by the meso-NiMn2O4 catalyst could improve the generation of H2O2, which thereby demonstrated the excellent catalytic property and electrochemical performance. Significantly, the mesoporous architecture of this Fenton-like catalyst provided more activated sites and interconnected channels that could accelerate electron transfer and facilitate the generation of activated radicals (˙OH and ˙O2). It is worth mentioning that the bifunctional meso-NiMn2O4 catalyst could provide two redox couples (Mn4+/Mn3+ and Ni3+/Ni2+) to enhance the electro-Fenton-like reaction for increasing the generation rate of active radicals. The degradation efficiency of CIP finally reached 100% within 1.5 h by using the meso-NiMn2O4 catalyst, which was better than that of other as-prepared Fenton-like catalysts, such as bulk-NiMn2O4, meso-MnO2, and meso-NiO. Simultaneously, TOC removal of CIP for the meso-NiMn2O4 catalyst was twice than that of bulk-NiMn2O4 catalyst. Finally, a possible heterogeneous electro-Fenton-like reaction mechanism for the efficient destruction of CIP was proposed by using the ordered meso-NiMn2O4 catalyst.

Graphical abstract: Evaluation of ciprofloxacin destruction between ordered mesoporous and bulk NiMn2O4/CF cathode: efficient mineralization in a heterogeneous electro-Fenton-like process

Back to tab navigation

Supplementary files

Publication details

The article was received on 13 Nov 2018, accepted on 08 Jan 2019 and first published on 09 Jan 2019


Article type: Paper
DOI: 10.1039/C8EN01279B
Citation: Environ. Sci.: Nano, 2019,6, 661-671

  •   Request permissions

    Evaluation of ciprofloxacin destruction between ordered mesoporous and bulk NiMn2O4/CF cathode: efficient mineralization in a heterogeneous electro-Fenton-like process

    Y. Sun, Y. Li, X. Mi, S. Zhan and W. Hu, Environ. Sci.: Nano, 2019, 6, 661
    DOI: 10.1039/C8EN01279B

Search articles by author

Spotlight

Advertisements