Microstructural evolution and catalytic properties of novel high-entropy spinel ferrites MFe2O4 (M= Mg, Co, Ni, Cu, Zn)

Ai, Jianping; Shuai, Yaping; Hu, Min; Cheng, Lihong; Luo, Siling; Li, Wenkui; Feng, Ying; Hu, Liling; Zhou, Zehua

doi:10.1016/j.ceramint.2023.04.119

Cited by 14 publications

(5 citation statements)

References 49 publications

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“…The XRD pattern of the as-prepared (MgCoNiCuZn)Fe 2 O 4 shows a typical inverse spinel structure, and fits well with previous reports. 33,34 As presented in the high-resolution transmission electron microscopy (HRTEM, Fig. 2b) image, the clear interplane spaces of 0.254 and 0.296 nm are attributed to the (311) and (220) planes of spinel-type (Mg 0.2 Co 0.2 Ni 0.2 Cu 0.2 Zn 0.2 )Fe 2 O 4 , respectively.…”

mentioning

confidence: 94%

Synthesis of spinel (Mg_0.2Co_0.2Ni_0.2Cu_0.2Zn_0.2)Fe₂O₄ in seconds for lithium-ion battery anodes

Ren,

Wu,

Zhang

et al. 2024

J. Mater. Chem. A

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mentioning

confidence: 94%

Synthesis of spinel (Mg_0.2Co_0.2Ni_0.2Cu_0.2Zn_0.2)Fe₂O₄ in seconds for lithium-ion battery anodes

Ren,

Wu,

Zhang

et al. 2024

J. Mater. Chem. A

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“…That's why, spinel ferrites have become a focal point of extensive research investigations worldwide. This is due to the fact that the traits of ferrites may be adapted to better suit a particular technological application [12][13][14][15]. Spinel ferrites have chemical formula, AB 2 O 4 , here A belongs to divalent metal ions like Ni 2+ , Cu 2+ , Co 2+ etc, and B denotes trivalent metal ions such as Fe 3+ , Dy 3+ etc.The allocation of ions in nanoscale spinel ferrites across two interstitial locations, octahedral site (B-site), and tetrahedral site (A-site) is shown as…”

Section: Introductionmentioning

confidence: 99%

Silver and nickel modified cobalt-zinc nanostructured ferrites for potential applications

Kumari,

Himanshi,

Jasrotia

et al. 2023

Phys. Scr.

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In this analysis, silver and nickel modified cobalt-zinc nanostructured ferrites, with chemical compositions of Co0.5Zn0.5AgxNiyFe2-x-yO4 (x = 0.0, 0.01, 0.02, 0.03; y = 0.0, 0.02, 0.03, 0.04) were prepared employing sol–gel auto-combustion (SGAC). All samples were inspected for elementary, structural, microstructural, and magnetic traits. The Fd3m space group geometry with pure spinel phase for the produced nanoferrites was shown by Rietveld’s refined X-ray diffraction patterns. Using the Scherrer formula, X-ray diffraction indicated that samples attain a crystallite size (t) of 38-63 (± 0.01) nm. The field emission scanning electron microscopy revealed that grain growth was not uniform but rather agglomerated, of varying shapes and sizes. The vibrational stretching within the metal-oxygen at interstitial sites was confirmed by Fourier-transform infrared spectroscopy, which clearly indicates the creation of Co-Zn spinel nanoferrites. Furthermore, in all the produced samples, five active Raman vibrational modes (Eg, 3T2g, A1g) are present, and all of these are related to the cubic spinel structure. A vibrating sample magnetometer is utilized to examine the magnetic traits of produced magnetic samples, displaying soft magnetic behavior. The Co0.5Zn0.5AgxNiyFe2-x-yO4 (x = 0.00; y = 0.00) sample attains the maximum saturation magnetization (Ms = 64.94 (± 0.001) emu g−1), whereas the maximum coercivity (Hc = 217.33 ± 0.001 Oe) was attained by the Co0.5Zn0.5AgxNiyFe2-x-yO4 (x = 0.03; y = 0.04) sample, respectively. Therefore, due to the magnetic softness and excellent values of magnetic parameters of the integrated samples, it is possible to use them for potential applications such as recording media, switching, multi-layer chip indicators (MLCIs), and power applications.

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“…Therefore, using CoFe 2 O 4 nanoparticles (NPs) in composite production could have a positive effect. In addition, the spinel structure of CoFe 2 O 4 allows for the introduction of different metallic ions into its lattice, thus altering its structural, magnetic, electrical, and catalytic properties [31]. It has many applications, such as in magnetic data storage, hybrid electric vehicles, transformer cores, high-frequency integrated inductors, biocompatible magnetic fluids, magnetic resonance imaging, and controlled drug delivery.…”

Section: Introductionmentioning

confidence: 99%

“…A porous, lightweight nanocomposite of CoFe 2 O 4 and graphene oxide was prepared by Liu et al [48] that displayed high microwave absorption [31].…”

Section: Introductionmentioning

confidence: 99%

High-Temperature, Lightweight Ceramics with Nano-Sized Ferrites for EMI Shielding: Synthesis, Characterisation, and Potential Applications

Abramovskis,

Zalite,

Maiorov

et al. 2023

Materials

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The present study focuses on the synthesis and characterisation of a lightweight ceramic material with electromagnetic interference (EMI) shielding properties, achieved using mullite containing micrometre-sized hollow spheres (cenospheres) and CoFe2O4 nanoparticles. This research explores compositions with varying CoFe2O4 contents ranging from 0 up to 20 wt.%. Conventional sintering in an air atmosphere is carried out at a temperature between 1100 and 1300 °C. The addition of ferrite nanoparticles was found to enhance the process of sintering cenospheres, resulting in improved material density and mechanical properties. Furthermore, this study reveals a direct correlation between the concentration of ferrite nanoparticles and the electromagnetic properties of the material. By increasing the concentration of ferrite nanoparticles, the electromagnetic shielding effect of the material (saturation magnetisation (Ms) and remanent magnetisation (Mr)) was observed to strengthen. These findings provide valuable insights into designing and developing lightweight ceramic materials with enhanced electromagnetic shielding capabilities. The synthesized ceramic material holds promise for various applications that require effective electromagnetic shielding, such as in the electronics, telecommunications, and aerospace industries.

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Microstructural evolution and catalytic properties of novel high-entropy spinel ferrites MFe2O4 (M= Mg, Co, Ni, Cu, Zn)

Cited by 14 publications

References 49 publications

Synthesis of spinel (Mg_0.2Co_0.2Ni_0.2Cu_0.2Zn_0.2)Fe₂O₄ in seconds for lithium-ion battery anodes

Synthesis of spinel (Mg_0.2Co_0.2Ni_0.2Cu_0.2Zn_0.2)Fe₂O₄ in seconds for lithium-ion battery anodes

Silver and nickel modified cobalt-zinc nanostructured ferrites for potential applications

High-Temperature, Lightweight Ceramics with Nano-Sized Ferrites for EMI Shielding: Synthesis, Characterisation, and Potential Applications

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Microstructural evolution and catalytic properties of novel high-entropy spinel ferrites MFe2O4 (M= Mg, Co, Ni, Cu, Zn)

Cited by 14 publications

References 49 publications

Synthesis of spinel (Mg0.2Co0.2Ni0.2Cu0.2Zn0.2)Fe2O4 in seconds for lithium-ion battery anodes

Synthesis of spinel (Mg0.2Co0.2Ni0.2Cu0.2Zn0.2)Fe2O4 in seconds for lithium-ion battery anodes

Silver and nickel modified cobalt-zinc nanostructured ferrites for potential applications

High-Temperature, Lightweight Ceramics with Nano-Sized Ferrites for EMI Shielding: Synthesis, Characterisation, and Potential Applications

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Product

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Synthesis of spinel (Mg_0.2Co_0.2Ni_0.2Cu_0.2Zn_0.2)Fe₂O₄ in seconds for lithium-ion battery anodes

Synthesis of spinel (Mg_0.2Co_0.2Ni_0.2Cu_0.2Zn_0.2)Fe₂O₄ in seconds for lithium-ion battery anodes