Abstract
Herein, the magnetic field facilitated electrocatalytic degradation of tetracycline is reported for the first time. A magnetic porous carbonized phthalonitrile resin electrocatalyst has been prepared through directly annealing phthalonitrile monomer, polyaniline coated barium ferrite and potassium hydroxide. The tetracycline degradation percentage (DP%) by such electrocatalyst is significantly increased up to 37.42% under magnetic field with the optimal pH value of 5.0 and bias voltage of 1.0 V (vs. SCE). The mechanism of this phenomenon is explained by the spin-selective electron removal process in the reaction between metal-oxygen species and tetracycline on the electrocatalyst. The comparison of degradation pathways for tetracycline with and without magnetic field confirms the improvement of tetracycline DP%. This work opens a new direction for the application of an external magnetic field in the electrocatalytic degradation of antibiotics in wastewater.
Original language | English |
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Article number | 123225 |
Number of pages | 10 |
Journal | Applied Catalysis B: Environmental |
Volume | 340 |
Early online date | 25 Aug 2023 |
DOIs | |
Publication status | Published - 1 Jan 2024 |
Keywords
- Tetracycline
- Electrocatalytic degradation
- Carbonized phthalonitrile resin
- Magnetic field effect
- Spin polarization