Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/11124
Title: Lorentz force promoted charge separation in a hierarchical, bandgap tuned, and charge reversible NixMn(0.5−x)O photocatalyst for sulfamethoxazole degradation
Authors: Anwer, Hassan
Park, Jae-Woo
01. Izmir Institute of Technology
Hanyang University
Keywords: Bandgap tuning
Hierarchical catalyst
Lorentz force
Magnetic separation
Sulfamethoxazole
Issue Date: Jan-2022
Publisher: Elsevier
Abstract: Here, a hierarchical NixMn(0.5−x)O catalyst that propels charge carriers to opposite interfaces of core@shell nanoparticle is reported. The opposite drift of charge carriers was achieved by tuning band edges in a multilevel catalyst by varying the molar concentration (x, 0→0.5) of precursors in a series of input injections. Preferential oxidation by holes on the surface of the catalyst was confirmed with the oxidation state transformation of metal ions (platinum and lead) deposited on the catalyst from their respective solutions. To obtain an electron rich surface, the synthesis scheme was reversed (x, 0.5→0), which yielded a catalyst with an inverse geometry and directed electron flow towards the surface. The collective impact of the Lorentz force and internal charge carrier drift contributed to excellent recombination suppression and 98% sulfamethoxazole degradation in 30 min. Finally, structural integrity and catalytic potential of the composite after repeated magnetic separation and degradation cycles was assessed to establish its practical applicability.
URI: https://hdl.handle.net/11147/11124
https://doi.org/10.1016/j.apcatb.2021.120724
Appears in Collections:Environmental Engineering / Çevre Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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