New Magnetically Assembled Electrode Consisting of Magnetic Activated Carbon Particles and Ti/Sb-SnO2 for a More Flexible and Cost-Effective Electrochemical Oxidation Wastewater Treatment

Magnetic activated carbon particles (Fe3O4/active carbon composites) as auxiliary electrodes (AEs) were fixed on the surface of Ti/Sb-SnO2 foil by a NdFeB magnet to form a new magnetically assembled electrode (MAE). Characterizations including cyclic voltammetry, Tafel analysis, and electrochemical...

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Bibliographic Details
Published in:Catalysts 2023-01, Vol.13 (1), p.7
Main Authors: Zhang, Fanxi, Shao, Dan, Yang, Changan, Xu, Hao, Yang, Jin, Feng, Lei, Wang, Sizhe, Li, Yong, Jia, Xiaohua, Song, Haojie
Format: Article
Language:English
Subjects:
Activated carbon
Catalysts
Charge transfer
Chemical reactions
Efficiency
Electrochemical analysis
Electrochemical impedance spectroscopy
Electrochemical oxidation
Electrodes
Evolution
Foils
Iron oxides
Lignosulfonates
Oxidation
Particulate composites
Permanent magnets
Pollutants
Tin dioxide
Voltammetry
Wastewater treatment
Water treatment
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Summary:Magnetic activated carbon particles (Fe3O4/active carbon composites) as auxiliary electrodes (AEs) were fixed on the surface of Ti/Sb-SnO2 foil by a NdFeB magnet to form a new magnetically assembled electrode (MAE). Characterizations including cyclic voltammetry, Tafel analysis, and electrochemical impedance spectroscopy were carried out. The electrochemical oxidation performances of the new MAE towards different simulated wastewaters (azo dye acid red G, phenol, and lignosulfonate) were also studied. Series of the electrochemical properties of MAE were found to be varied with the loading amounts of AEs. The electrochemical area as well as the number of active sites increased significantly with the AEs loading, and the charge transfer was also facilitated by these AEs. Target pollutants’ removal of all simulated wastewaters were found to be enhanced when loading appropriate amounts of AEs. The accumulation of intermediate products was also determined by the AEs loading amount. This new MAE may provide a landscape of a more cost-effective and flexible electrochemical oxidation wastewater treatment (EOWT).
ISSN:2073-4344
2073-4344
DOI:10.3390/catal13010007