Preparation techniques for zinc ferrites and their applications: A review

Pund, Sangita Nanasaheb; Nagwade, Pratik A.; Nagawade, Arvind V.; Thopate, Shankar R.; Bagade, Arun Vijay

doi:10.1016/j.matpr.2022.02.444

Cited by 21 publications

(7 citation statements)

References 135 publications

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“…Mechanical forces are used to break down precursor carbon materials, creating amorphous carbonaceous precursors [100][101][102]. Subsequent thermal treatment at high temperatures transforms these precursors into well-aligned CNTs [103,104]. Challenges include the need for precise control of mechanical activation and high-temperature processing [105,106].…”

Section: A B a Bmentioning

confidence: 99%

Carbon nanotubes: revolutionizing construction materials for a sustainable future: A review

Vafaeva,

Zegait

2023

Res. Eng. Struct. Mat.

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This review article explores the use of carbon nanotubes (CNTs) as material enhancers in construction and their advantages. It emphasizes ongoing research to gather accurate data on CNT-enhanced material properties and their role in creating more efficient and stronger building materials. The various methods of obtaining and incorporating CNTs into building materials, including chemical vapor deposition and electric arc synthesis, are discussed. A comparative analysis of building materials with and without CNTs is presented to examine their characteristics. The article also discusses future prospects for CNTs in various industries. The study aims to investigate experimental methods for obtaining CNTs, their properties, and their introduction into building materials. The research methodology involves studying literature sources, analyzing experimental results, and examining the structural, mechanical, and electronic properties of CNTs. Analytical methods based on scientific articles and publications related to CNTs in construction were used to ensure the article's reliability, validity, completeness, and objectivity. The research highlights CNTs' potential as material enhancers in construction, owing to their unique mechanical properties, such as high strength, stiffness, and corrosion resistance. Specific studies demonstrating the use of CNTs to increase the strength of concrete and other construction materials are provided, indicating the promising application of CNTs in future construction projects. However, technical challenges must be addressed, and appropriate standards and regulations should be developed before practical implementation.

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Section: A B a Bmentioning

confidence: 99%

Carbon nanotubes: revolutionizing construction materials for a sustainable future: A review

Vafaeva,

Zegait

2023

Res. Eng. Struct. Mat.

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“…Spinel ferrite materials have drawn the attention of the large research community because of their potential application in electronics [1][2][3], medicine [4][5][6], and catalysis [7][8][9][10][11]. Numerous studies of spinel ferrites have been motivated by the interest to investigate the relationship between their composition, structure, and functional properties as magnetic, optical, catalytic, etc.…”

Section: Introductionmentioning

confidence: 99%

Nanocrystalline (Cu0.5Ni0.5)yFe3−yO4 Ferrites: Synthesis and Characterization

Velinov,

Petrova,

Karashanova

et al. 2024

Crystals

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Nanocrystalline materials with the composition of (Cu0.5Ni0.5)yFe3−yO4 and a spinel structure were synthesized by the auto-combustion sol–gel method. The materials were characterized by powder X-ray diffraction, Mössbauer spectroscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, and N2 physisorption. A decrease in the unit cell parameter and increase in the crystallite size with a decrease in the copper and nickel content in ferrites were evidenced. Mössbauer analysis determined that iron ions are in the 3+ states in all compositions. Transmission electron microscopy showed that synthesized ferrite materials consisted of nanoparticles with narrow size distributions. The catalytic properties of synthesized ferrites were studied in the reaction of ethyl acetate oxidation and methanol decomposition. The conversion of ethyl acetate and CO2 selectivity increased with temperature, and this effect was most pronounced for (Cu0.5Ni0.5)0.5Fe2.5O4, for which the main part of the particles possessed sizes below 10 nm, and the mean diameter was calculated to be 4.3 nm. The catalytic activity in the reaction of methanol decomposition was the highest for (Cu0.5Ni0.5)0.25Fe2.75O4, and it decreased with the increase in Cu and Ni content in the samples. The analysis of the samples after the catalytic test indicated significant reduction transformations within the catalysts. Under the reaction medium, the spinel phase decomposed through the formation of Hägg carbide.

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“…Ferrites exhibit astounding properties, which render them attractive for numerous technological applications in many fields; such as electronics, optoelectronics, magnetics, magneto‐electronics, and electrochemical science, biotechnology 1–4 . Besides, they show high saturation magnetization, large permeability at high frequency, and high electrical resistivity, and so on 5 .…”

Section: Introductionmentioning

confidence: 99%

Greener synthesis of lightweight, self‐standing PMMA/CoFe₂O₄ polymeric film for magnetic, electronic, and terahertz shielding applications

Mohamed

Ahmad

Hameed

2023

Polymers for Advanced Techs

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This work aims to develop a multifunctional PMMA/CoFe 2 O 4 polymeric film of low loss dielectric constant, high magnetic properties, and perceptible terahertz shielding effectiveness. Pure cobalt ferrite magnetic nanoparticles (CoFe 2 O 4 MNPs) were prepared by a facile-modified solution deposition method. Then, the nanoparticles were loaded to poly (methyl methacrylate) of different ratios (x = 0, 5, 10, 15, and 20 wt%) to synthesize films by evaporative casting technique. X-ray diffraction (XRD) evidenced the formation of CoFe 2 O 4 MNPs in the cubic spinal structure. The FTIR confirmed the interaction of CoFe 2 O 4 MNPs with PMMA chains. Compared to the pure PMMA, the PMMA/CoFe 2 O 4 nanocomposites were more thermally stable, as evidenced by thermogravimetric analysis, (TGA) and differential scanning calorimetry (DSC). The micrograph images by FESEM unraveled that CoFe 2 O 4 MNPs have formed in different geometrical shapes (nanocubes, nanotubes, and nano oval). The values of the band gap energy were computed by the absorption spectra fitting (ASF) method. It varied from 4.94 to 4.68 eV, as the CoFe 2 O 4 MNPs contents were changed from 0 to 20 wt%. Compared to host PMMA, the dielectric permittivity was enhanced, while the dielectric loss was slightly decreased. Therefore, the prepared film can be employed as a passive component in electronic circuits, namely capacitors and supercapacitors. The shielding effectiveness (SE) was found to be improved with frequency and CoFe 2 O 4 content, reflecting the applicability of PMMA/CoFe 2 O 4MNPs films in terahertz shielding. The magnetic parameters were investigated by a vibrating sample magnetometer (VSM) and were found to increase with CoFe 2 O 4 content, which could be used as a flexible film in magnetic applications.

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Preparation techniques for zinc ferrites and their applications: A review

Cited by 21 publications

References 135 publications

Carbon nanotubes: revolutionizing construction materials for a sustainable future: A review

Carbon nanotubes: revolutionizing construction materials for a sustainable future: A review

Nanocrystalline (Cu0.5Ni0.5)yFe3−yO4 Ferrites: Synthesis and Characterization

Greener synthesis of lightweight, self‐standing PMMA/CoFe₂O₄ polymeric film for magnetic, electronic, and terahertz shielding applications

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Preparation techniques for zinc ferrites and their applications: A review

Cited by 21 publications

References 135 publications

Carbon nanotubes: revolutionizing construction materials for a sustainable future: A review

Carbon nanotubes: revolutionizing construction materials for a sustainable future: A review

Nanocrystalline (Cu0.5Ni0.5)yFe3−yO4 Ferrites: Synthesis and Characterization

Greener synthesis of lightweight, self‐standing PMMA/CoFe2O4 polymeric film for magnetic, electronic, and terahertz shielding applications

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Product

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Greener synthesis of lightweight, self‐standing PMMA/CoFe₂O₄ polymeric film for magnetic, electronic, and terahertz shielding applications