Study of structural, optical, photocatalytic, electromagnetic, and biological properties Co0.75Mg0.25CexFe2−xO4 of Mg-Co nano ferrites

Goud, S N; Venkatesh, Nakiraboina; Kumar, Deepak; Barapati, Shankar; Veerasomaiah, P.

doi:10.1016/j.inoche.2022.109969

Cited by 21 publications

(4 citation statements)

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“…Figure 14 (a-d) displays the visible absorption spectra of the acid red dye degradation by Cu and Ce doped Co nanoparticles, which were recorded throughout a 90-minute exposure to visible light. It was clear that the acid red dye's absorbance intensity decreased signi cantly with increasing exposure time, which is consistent with the dye's photocatalysis (Goud et al, 2022b;Kumar Ambala et al, 2023a). Table 4.…”

Section: Photocatalytic Activity Of Acid Red Dyesupporting

confidence: 68%

“…Among the various nano ferrite's cobalt based magnetic nano ferrite materials are key interest because used in versatile applications. The formula of spinel ferrites is AB 2 O 4 , where A is tetrahedral (A-site) and B is octahedral (B-site) (Almessiere et al, 2019;Goud et al, 2022a;Hussain et al, 2021;Kebede et al, 2022). The spinel unit cell is made up with16 trivalent and 8 divalent metal ions closely packed with FCC (face centered cubic) structure.…”

Section: Introductionmentioning

confidence: 99%

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Impact of Ce–Cu metal ions on structural, magneto-electrical properties of Co2+ based nano ferrites and their application in photo catalytic activity

Yelagandula,

Eragari,

Ramakrishna Reddy

et al. 2024

Chem. Pap.

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Cobalt based nanoferrites Co 1 − x Cu x Ce y Fe 2−y O 4 Where nano ferrites produced through citrate gel auto combustion technique and their structural and topographical studies were inspected through x-ray diffraction technique and eld emission scanning electron microscope. The structural analysis con rms the prepared nano ferrites having single-phase cubic spinel, along Fd3m space group. Crystalline size of the synthesized samples found 20-26 nm calculated by Debey Scherrer formula. Catalytic activity of the samples con rmed by dye degradation studies of methylene blue and acid red dye degradation. Magnetic behavior of the materials measured by a vibrating sample magnetometer, saturation magnetization gradually decreases as increasing Cu and Ce content and found to be 26 to 18 emu/gm. Electrical properties were measured by LCR meter.

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Section: Photocatalytic Activity Of Acid Red Dyesupporting

confidence: 68%

Section: Introductionmentioning

confidence: 99%

Impact of Ce–Cu metal ions on structural, magneto-electrical properties of Co2+ based nano ferrites and their application in photo catalytic activity

Yelagandula,

Eragari,

Ramakrishna Reddy

et al. 2024

Chem. Pap.

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“…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. [12][13][14][15].…”

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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“…[14][15][16] Among nano ferrites, cobalt-based particles stand out due to their versatile applications, with magnetic properties being influenced by synthesis processes, preparation methods, sintering temperatures, and particle sizes. [17][18][19] The electrical and magnetic properties of transition metal ions also hold substantial importance across industries, contingent upon factors such as ionic radii and oxidation states. Additionally, dopant metal ions and Fe ion concentration or Fe ion influenced by transition metal dopants play pivotal roles in shaping the magnetic, electrical, and structural properties of nanoferrites.…”

mentioning

confidence: 99%

Co³⁺ Doped CdFe₂O₄ Nanoparticles: Structural, Optical, Magnetic, and Electrical Properties

Satayanarayana Goud,

Venkatesh,

Ravi Kumar

et al. 2024

ECS J. Solid State Sci. Technol.

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Through the citrate-gel auto-combustion technique, we synthesized Co-doped cadmium nano ferrites (NFs) with the formula CoxCd1−xFe2O4 (where 0 ≤ x ≤ 1.0 with increments of 0.2). The synthesized materials underwent comprehensive analysis utilizing X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, and X-ray photoelectron spectroscopy. Magnetic and electrical properties were evaluated using a vibrating sample magnetometer and LCR meter, respectively. XRD analysis confirmed the spinel phase structure and FD3M space group. SEM analysis revealed agglomerations of nanoparticles and grain boundaries. Elemental analysis of the synthesized nanomaterials was provided by energy dispersive spectroscopy. FTIR spectroscopy identified two main broad bands corresponding to the tetrahedral (A) and octahedral (B) sites, confirming the spinel structure. Magnetic properties such as magnetic saturation, coercivity, and remanent magnetization were characterized using VSM. Additionally, the LCR meter assessed frequency and temperature-dependent dielectric parameters, including AC conductivity (σAC), dielectric permittivity, dielectric loss (tan δ), and impedance spectra. An increase in AC conductivity (σAC) was observed with increasing temperature and frequency.

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Study of structural, optical, photocatalytic, electromagnetic, and biological properties Co0.75Mg0.25CexFe2−xO4 of Mg-Co nano ferrites

Cited by 21 publications

References 91 publications

Impact of Ce–Cu metal ions on structural, magneto-electrical properties of Co2+ based nano ferrites and their application in photo catalytic activity

Impact of Ce–Cu metal ions on structural, magneto-electrical properties of Co2+ based nano ferrites and their application in photo catalytic activity

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

Co³⁺ Doped CdFe₂O₄ Nanoparticles: Structural, Optical, Magnetic, and Electrical Properties

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Study of structural, optical, photocatalytic, electromagnetic, and biological properties Co0.75Mg0.25CexFe2−xO4 of Mg-Co nano ferrites

Cited by 21 publications

References 91 publications

Impact of Ce–Cu metal ions on structural, magneto-electrical properties of Co2+ based nano ferrites and their application in photo catalytic activity

Impact of Ce–Cu metal ions on structural, magneto-electrical properties of Co2+ based nano ferrites and their application in photo catalytic activity

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

Co3+ Doped CdFe2O4 Nanoparticles: Structural, Optical, Magnetic, and Electrical Properties

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Co³⁺ Doped CdFe₂O₄ Nanoparticles: Structural, Optical, Magnetic, and Electrical Properties