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Journal of Nanoparticle Research

Erschienen in:

01.11.2020 | Research paper

Immobilization of Fe₂O₃/TiO₂ photocatalyst on the metallic substrate via plasma electrolytic oxidation process: degradation efficiency

verfasst von: Amin Hoseini, Benyamin Yarmand

Erschienen in: Journal of Nanoparticle Research | Ausgabe 11/2020

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Abstract

This study aimed to extend the application of plasma electrolytic oxidation (PEO) process to the production of immobilized composite photocatalysts with sensitizing nanoparticles (NPs) on the metallic substrate. For this purpose, the immobilized Fe₂O₃/TiO₂ layers with different amounts of sonochemically synthesized Fe₂O₃ NPs were prepared on the titanium substrate using the PEO method and their structural, morphological, optical, and photocatalytic properties were investigated. The results showed that the immobilized Fe₂O₃/TiO₂ layers with pancake-like morphology were homogeneously formed and the Fe₂O₃ NPs were uniformly embedded. The participation of the Fe₂O₃ NPs in layer formation events resulted in the phase transformation of anatase to rutile and an increase in the number of small surface pores. With the increment in the amount of incorporated Fe₂O₃ NPs, the absorption band-edge of immobilized layers shifted to the longer wavelengths and their light utilization from the visible region of the solar radiation spectrum considerably increased. As a result of these changes, the degradation efficiency of methylene blue aqueous solution under ultraviolet irradiation significantly enhanced with adding 3 g.L⁻¹ Fe₂O₃ NPs to the phosphate-based electrolyte.

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Titel: Immobilization of Fe2O3/TiO2 photocatalyst on the metallic substrate via plasma electrolytic oxidation process: degradation efficiency
verfasst von: Amin Hoseini
Benyamin Yarmand
Publikationsdatum: 01.11.2020
Verlag: Springer Netherlands
Erschienen in: Journal of Nanoparticle Research / Ausgabe 11/2020
Print ISSN: 1388-0764
Elektronische ISSN: 1572-896X
DOI: https://doi.org/10.1007/s11051-020-05043-x

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