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Journal of Sol-Gel Science and Technology
Erschienen in: Journal of Sol-Gel Science and Technology 1/2018

20.08.2018 | Original Paper: Sol-gel and hybrid materials for catalytic, photoelectrochemical and sensor applications

Polyethylene glycol-assisted sol-gel synthesis of magnetic CoFe2O4 powder as photo-Fenton catalysts in the presence of oxalic acid

verfasst von: Tuong Phuc Hoang Ngo, Tien Khoa Le

Erschienen in: Journal of Sol-Gel Science and Technology | Ausgabe 1/2018

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Abstract

The aim of the study was to prepare magnetic photo-Fenton catalysts based on CoFe2O4 by polyethylene glycol-assisted sol-gel method for the degradation of methylene blue under UVA and visible light irradiation with H2C2O4 as a radical producing source. The catalysts were synthesized at different annealing temperatures in order to investigate the influence of annealing temperature on their crystal structure, morphology, surface functional groups, magnetic properties, and their photo-Fenton catalytic activity. According to the results, when the annealing temperature increased from 600 to 800 °C, the content of CoFe2O4 cubic spinel phase was significantly enhanced, the amount of Fe3+ ions in the tetrahedral sites also increased on the surface of samples, which improved the magnetic properties as well as the photo-Fenton catalytic performance under both UVA and visible light. However, at the annealing temperature of 900 °C, the photo-Fenton activity was declined, which can be attributed to the growth of catalytic particles and the decrease of Fe3+ ions on their surface.
Vorheriger Artikel Role of cetyltrimethyl ammonium bromide on sol–gel preparation of porous cerium titanate photocatalyst
Nächster Artikel Molecularly imprinted photocatalyst for glyceraldehyde production

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Metadaten
Titel
Polyethylene glycol-assisted sol-gel synthesis of magnetic CoFe2O4 powder as photo-Fenton catalysts in the presence of oxalic acid
verfasst von
Tuong Phuc Hoang Ngo
Tien Khoa Le
Publikationsdatum
20.08.2018
Verlag
Springer US
Erschienen in
Journal of Sol-Gel Science and Technology / Ausgabe 1/2018
Print ISSN: 0928-0707
Elektronische ISSN: 1573-4846
DOI
https://doi.org/10.1007/s10971-018-4783-y

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