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Improving generation of H2O2 and •OH at copper hexacyanocobaltate/graphene/ITO composite electrode for degradation of levofloxacin in photo-electro-Fenton process.
- Source :
- Environmental Science & Pollution Research; Apr2021, Vol. 28 Issue 14, p17636-17647, 12p
- Publication Year :
- 2021
-
Abstract
- In this work, copper hexacyanocobaltate was electro-deposited at amino-graphene-coated indium-tin-oxide glass to form multifunctional heterogeneous catalyst (CuCoG/ITO), which was confirmed by field emission scanning microscope, infrared spectra, X-ray diffraction, and electro-chemistry techniques. A novel heterogeneous photo-electro-Fenton-like system was established using CuCoG/ITO as an air-diffusion electrode, in which hydrogen peroxide (H<subscript>2</subscript>O<subscript>2</subscript>) and hydroxyl radical (•OH) could be simultaneously generated by air O<subscript>2</subscript> reduction. The productive rate of •OH could reached to 70.5 μmol h<superscript>−1</superscript> at − 0.8 V with 300 W visible light irradiation at pH 7.0, 0.1 M PBS. Levofloxacin could be quickly degraded at CuCoG/ITO during heterogeneous photo-electro-Fenton process in neutral media with a first-order kinetic constant of 0.49 h<superscript>−1</superscript>. [ABSTRACT FROM AUTHOR]
- Subjects :
- COPPER electrodes
FIELD emission
HYDROXYL group
ELECTRODES
COPPER
GRAPHENE
Subjects
Details
- Language :
- English
- ISSN :
- 09441344
- Volume :
- 28
- Issue :
- 14
- Database :
- Complementary Index
- Journal :
- Environmental Science & Pollution Research
- Publication Type :
- Academic Journal
- Accession number :
- 149511245
- Full Text :
- https://doi.org/10.1007/s11356-020-11883-w