Three-dimensional ordered macroporous lanthanum manganate-supported magnetic iron oxide as an efficient catalyst for photo-Fenton degradation of penicillin G potassium

Highly efficient visible-light magnetic Fe 3 O 4 /3DOM LaMnO 3 perovskite catalyst was prepared by sol–gel method and solvothermal method. The Fe 3 O 4 /3DOM LaMnO 3 was adopted as catalyst to promote the photo-Fenton process, in which Penicillin G potassium (PEN G) was used as representative pollut...

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Bibliographic Details
Published in:Journal of materials science 2023-05, Vol.58 (20), p.8331-8345
Main Authors: Zaixing, Li, Qinqin, Zhang, Chao, Li, Xiaofei, Chen, Chenyang, Zhang, Jiafeng, Xing, Haojie, Qi, Qian, Xing, Qing, Sun
Format: Article
Language:English
Subjects:
Catalysts
Catalytic activity
Characterization and Evaluation of Materials
Chemical Routes to Materials
Chemical synthesis
Chemistry and Materials Science
Classical Mechanics
Crystallography and Scattering Methods
Ferric oxide
Heterogeneous structure
Iron compounds
Iron oxides
Lanthanum compounds
Manganates
Materials Science
Oxidation
Penicillin
Penicillin G
Perovskite
Perovskites
Photodegradation
Polymer Sciences
Potassium
Sol-gel processes
Solid Mechanics
Wastewater
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Summary:Highly efficient visible-light magnetic Fe 3 O 4 /3DOM LaMnO 3 perovskite catalyst was prepared by sol–gel method and solvothermal method. The Fe 3 O 4 /3DOM LaMnO 3 was adopted as catalyst to promote the photo-Fenton process, in which Penicillin G potassium (PEN G) was used as representative pollutant. The results showed that the catalyst exhibited excellent photo-Fenton oxidation degradation performances toward PEN G under visible light. Its application on degrading PEN G exhibited highly catalytic efficiency over a wide applicable pH range from 3 to 11. When the PEN G concentration was as low as 5 mg L −1 , the PEN G degradation rate still reached 95.31% within 60 min. The catalyst is quiet stable. The significant improvement of the photo-Fenton catalytic activity of Fe 3 O 4 /3DOM LaMnO 3 is mainly due to the presence of heterogeneous structure, large specific surface area and effective photo-generated carrier separation rate. In addition, the possible catalytic mechanism of Fe 3 O 4 /3DOM LaMnO 3 was preliminarily proposed by active species capture experiments. In summary, this study provides new insights into the synthesis of an effective heterogeneous photo-Fenton catalyst for the degradation of PEN G in wastewater. Graphical abstract
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-023-08548-7