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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/231781
Magnetically-altered e<sub>g</sub>-orbital occupancy to boost the two-electron oxygen reduction electrocatalysis for faster water decontamination
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Herein, we demonstrate how the magnetic modulation of the eg-orbital occupancy of Co ions can become a novel approach to enhance the two-electron oxygen reduction reaction (2e- ORR) for advanced wastewater treatment by electro-Fenton (EF) process. Nickel foam (NF) substrate coated with ZIF67 was prepared and thermally treated to obtain ferromagnetic NF-supported Co/Co3O4 cathodes, whose response to a small magnetic field was further evaluated in EF. The results show an increase of 62.3 % increase in H2O2 yield and 46.5 % in faradaic efficiency, improving the degradation rate of the antibiotic sulfamerazine from 77.2 % to 92.4 % in 120 min. This enhancement is attributed to improved electron transfer facilitated by the alteration of eg-orbital occupancy of Co ions caused by spin regulation under the magnetic field, rather than to mass transport effects. Therefore, magnetic modulation of the eg-orbital occupancy emerges as a promising strategy to boost EF process for more efficient water decontamination.
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JING, Baojian, et al. Magnetically-altered eg-orbital occupancy to boost the two-electron oxygen reduction electrocatalysis for faster water decontamination. Applied Catalysis B-Environmental. 2025. Vol. 369. ISSN 0926-3373. [consulted: 30 of September of 2026]. Available at: https://hdl.handle.net/2445/231781