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Assessment of ionic site distributions in magnetic high entropy oxide of (Mn0·2Fe0·2Co0·2Ni0·2Zr0.2)3O4 and its catalytic behaviour by S.K. Shaw; Puja Kumari; A. Sharma; Neha Jatav; A. Gangwar; N.S. Anuraag; P. Rajput; S. Kavita; Sher Singh Meena; M. Vasundhara; Indrajit Sinha; N.K. Prasad is a Physics and Astronomy article available to read on EtoBox.
What is Assessment of ionic site distributions in magnetic high entropy oxide of (Mn0·2Fe0·2Co0·2Ni0·2Zr0.2)3O4 and its catalytic behaviour about?
Herein, we report a single phase equi-atiomic high-entropy oxide (HEO) of a new composition (Mn 0⋅2 Fe 0⋅2 Co 0⋅2 Ni 0⋅2 Zr 0.2 ) 3 O 4 with spinel structure. The material was synthesized via microwave energy irradiated co-precipitation technique and a subsequent calcination at 500 • C. The X-ray diffraction and selected area electron diffraction assisted in the crystal phase determination. While the STEM-EDS elemental mapping was used to realize the chemical homogeneity and elemental distribution. The synchrotron X-ray absorption spectroscopy aided to determine the ionic states of constituents and their distribution over the octahedral (O h ) and tetrahedral (T d ) co-ordination environment. It displayed ferrimagnetic nature with a magnetization of ~12 emu/ g at an applied field of 90 kOe. Intriguingly, the synthesized material performed well as a catalyst in the Fenton degradation of Tetracycline micropollutant. The degradation behaviour followed a zero-order kinetic and the rate constant is calculated as 0.43 mol L -1 s -1 .
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- Author
- S.K. Shaw; Puja Kumari; A. Sharma; Neha Jatav; A. Gangwar; N.S. Anuraag; P. Rajput; S. Kavita; Sher Singh Meena; M. Vasundhara; Indrajit Sinha; N.K. Prasad
- Publisher
- Elsevier BV
- Published
- 2023
- Language
- EN
- Field
- Physics and Astronomy (Physical Sciences)