| Abstract Scope |
In this study, we present the synthesis of nanosized HEO comprising Al, Mn, Fe, Co, and Ni, with the composition (Al0.6Mn0.6Fe0.6Co0.6Ni0.6) O4 using a sol-gel method followed by high-temperature calcination (~700 °C). X-ray diffraction (XRD) and transmission electron microscopy confirmed the formation of a single-phase nanosized HEO, while X-ray photoelectron spectroscopy identified the oxidation states of the constituent elements. The cubic spinel-structured HEO displayed soft ferrimagnetic properties. It demonstrated remarkable efficiency in the photo-Fenton catalytic degradation of the organic dye methylene blue (MB), achieving complete degradation within 90 minutes. Mass spectroscopic analysis confirmed the successful degradation and mineralization of MB via the photo-Fenton process. It has been understood that all the multivalent elements except Al undergone to redox reactions and able to generate electron-hole pairs under UV light. Thus, the material could easily degrade MB. Additionally, the magnetic nature of the HEO allows for easy catalyst recovery after reuse. |