Synthesis and magneto-optical studies of novel Ni0.5Zn0.5Fe2O4/ Zn0.95Co0.05O nanocomposite as a candidate for photocatalytic applications

Chehade, Warde; Basma, H.; Abdallah, A.M.; Hassan, R. Sayed; Awad, R.

doi:10.1016/j.ceramint.2021.09.209

Cited by 20 publications

(7 citation statements)

References 76 publications

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“…The spectra of Fe-2p contain the spin-orbit doublets of Fe (Fe-2p 3/2 and Fe-2p 1/2 ). These doublets are composed of two peaks, each arising from Fe 3+ located at the O h and T d sites and accompanied by their satellites [100,107]. They are in agreement with the study achieved by Murugesan et al [108], which reported the structural, spectroscopic, and electrical properties of Zn substituted manganese ferrite (MnFe 2 O 4 ).…”

Section: Xps Studysupporting

confidence: 91%

“…Similar variation behaviors have been identified in literatures [21,126]. The μ m values of samples F and A confirm with those reported in previous literatures [21,100]. On the other hand, the K value of sample F is higher than that of the pure ZnFe 2 O 4 NPs prepared by Aridi et al [51].…”

Section: Vsm Measurementssupporting

confidence: 90%

“…This can be explained according to the study of Iaiche and Djelloul [99], which studied zinc oxide/zinc aluminate (ZnO/ZnAl 2 O 4 ) nanocomposite by using aluminum sulfate hydrate (Al 2 O(SO 4 ) 3 .18H 2 O) salt as a precursor in synthesis and two peaks of sulfur (S-2 s and S-2p) appeared close to C-1 s in the survey spectrum. Carbon peaks appear in all spectra as a result of atmospheric exposure before measuring the samples [100].…”

Section: Xps Studymentioning

confidence: 99%

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Fabrication, characterization, and antibacterial activity of ferrite, chromite, and aluminate nanoparticles

El Hajjar,

Bitar,

Zahr

et al. 2024

Mater. Res. Express

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Zn0.33Co0.33Mg0.33X2O4 nanoparticles (NPs), where X = Fe, Cr, Al and denoted by F, C, and A, were prepared by the co-precipitation method. X-ray diffraction patterns validated the formation of NPs with cubic spinel structure with the detection of small amounts of impurities in samples C (Cr2O3) and A (MgO). Transmission electron micrographs showed a nearly spherical shape for samples F and A. However, sample C revealed cubic and nearly spherical shapes. Energy-dispersive x-ray analysis ensured the presence of chemical constituents in all samples. The vibrational modes of NPs were confirmed with Fourier transform infrared spectroscopy. The direct bandgap energy values, calculated using ultraviolet-visible spectroscopy, were in the range of 2.355 and 2.967 eV for F, C, and A samples. X-ray photoelectron spectroscopy analysis confirmed the compositions as well as the valence states of all elements. Magnetic hysteresis (M–H) loops revealed a soft ferromagnetic behavior. Sample F exhibited a higher saturation magnetization, remanent magnetization, magnetic moment, and magnetic anisotropy compared to those of samples C and A. The antibacterial activity of the tested samples against four bacteria (Staphylococcus aureus, Stenotrophomonas maltophilia, Escherichia coli, and Enterococcus faecium) was determined using the broth microdilution assay, minimum bactericidal concentration (MBC), and time-kill test. The prepared NPs exhibited varying antibacterial activity due to multiple factors. These results highlighted the potential utility of the ternary ferrite, chromite, and aluminate NPs in the treatment of microbial infections, particularly multidrug-resistant bacteria.

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Section: Xps Studysupporting

confidence: 91%

Section: Vsm Measurementssupporting

confidence: 90%

Section: Xps Studymentioning

confidence: 99%

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Fabrication, characterization, and antibacterial activity of ferrite, chromite, and aluminate nanoparticles

El Hajjar,

Bitar,

Zahr

et al. 2024

Mater. Res. Express

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“…To identify the elements found in both pure samples and nanocomposites and their oxidation states, XPS measurements are employed. Figure 6 Every survey spectrum from the previous pure samples matches the prior studies [88][89][90]. The existence of peaks in the C2 survey spectrum that correspond to nickel, oxygen, barium, and iron, along with the absence of peaks for zinc, indicates the formation of the C2 nanocomposite and validates the results of the XRD technique.…”

Section: X-ray Photoelectron Spectroscopy (Xps)supporting

confidence: 79%

Comparative study between oxide/soft ferrite, oxide/hard ferrite, and soft/hard ferrite nanocomposites: structural, electrical, and magnetic properties

Farhat,

Awad,

Bitar

2024

Phys. Scr.

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Three binary nanocomposites (NCs): (0.5NiO/0.5Ni0.5Zn0.5Fe2O4), (0.5NiO/0.5BaFe12O19), and (0.5Ni0.5Zn0.5Fe2O4/0.5BaFe12O19) were prepared using the co-precipitation method followed by the wet ball-milling technique. X-ray diffraction analysis showed the production of NiO and Ni0.5Zn0.5Fe2O single phases, while the α-Fe4 2O3secondary phase appeared in the BaFe12O19 and the 0.5Ni0.5Zn0.5Fe2O4/0.5BaFe12O19 nanocomposite. The transmission electron microscopy investigation and the selected area electron diffraction demonstrated the presence of the nanocomposites' constituent phases. X-ray photoelectron spectroscopy identified the oxidation states found in the prepared samples (Ba2+, Ni2+, Ni3+, Zn2+, Fe3+, and O2-). The bandgap values ( ) of the nanocomposites are in the range between 2.79 and 3.66 eV, which indicates their semiconductor nature. The DC conductivity experiment confirmed the semiconducting nature of all samples, and the activation energies ( ) and ( ) at high and low-temperature regions, respectively, were calculated from the Arrhenius equation. According to the vibrating sample magnetometer, the NCs exhibited ferromagnetic (FM) as showed by the M-H loops. In the oxide/soft ferrite NC, dM/dH curve indicated strong exchange coupling interactions, while the hard and the soft magnetic phases in the oxide/hard ferrite and the soft/hard ferrite NCs were weakly exchanged coupled. Significant uses had been found for each of the three nanocomposites according to their constituent phases and properties.

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“…These components are separated by shake-up satellites, traced at 717.5  0.5 eV and 720.5  0.6 eV, and followed by another satellite at 732.8  0.3 eV. Fe-2p 3/2 peak, in all the samples, displayed a non-symmetrical shape, demonstrating the occupancy of Fe 3+ ions in two lattice sites, the octahedral coordination, presented at 711.2  0.5 eV and tetrahedral coordination located at 714.1  0.1 [72]. The difference between the main spectral line and the satellite peak is around 6 eV, indicating the +3 oxidation state of iron ions [70].…”

Section: X-ray Photoelectron Spectroscopy (Xps)mentioning

confidence: 90%

Structural, Magnetic, and Mössbauer Investigation of Mg-Ni-Co ferrites doped by Sm³⁺ sions

Matar,

Rabaa,

Moussa

et al. 2023

Phys. Scr.

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Samarium-doped magnesium-nickel-cobalt nanoferrites (Mg1/3 Ni1/3Co1/3)Fe2-xSmxO4, with x = 0.00, 0.01, 0.02, 0.04, and 0.08, were synthesized by the coprecipitation method. X-ray diffractometer (XRD), transmission electron microscopy (TEM), energy dispersive X-ray (EDX), X-ray photoelectric spectroscopy (XPS), Fourier Transform Infra-Red (FTIR), Raman spectroscopy, Mössbauer spectroscopy, and magnetic measurement techniques were used, to study the structure, microstructure, and magnetic properties of the samples. The formation of the cubic spinel structure was confirmed by Rietveld analysis of the XRD data and by the appearance of the two absorption bands close to 400 cm-1 and 600 cm-1 from the FTIR spectrum. Raman spectroscopy verified the formation of the spinel phase in the samples. The elemental composition, valency, and cationic distribution were examined using X-ray photoelectric spectroscopy (XPS) measurements. Experimental findings revealed that doping with Sm3+ ions had a significant effect on the magnetic properties of nanoparticles. The saturation magnetization (Ms) and coercivity field (Hc) values fluctuate depending on the crystallite size (DXRD) of the samples from XRD analysis as the Sm3+ content increases. The magnetization dependence on the applied field was investigated at different ranges of applied fields based on the output of the statistical parameters for the curve fitted using four different forms of the law of approach to saturation. The statistical parameters and physically significant fitted parameters give information on the dependence of magnetization over various applied field regions. A thorough investigation of the output parameters from fitting into various equations reveals that the composition of Mg-Ni-Co ferrites exhibits a dependence of magnetization on the applied field. Room-temperature Mössbauer spectra displayed a mix of the magnetic sextet and central quadrupole doublet, with improvement in the magnetic sextet in the Sm-doped samples. Moreover, Mössbauer spectra at 77 K showed the demise of the quadrupole doublet in all samples and showed two sextets (tetrahedral and octahedral sites). Sm-doping reduced the values of the hyperfine magnetic field of both sextets. All Fe ions can be found in the Fe3+ state, according to the isomer shift values and there is a migration of Fe3+ ions from octahedral to tetrahedral sites upon Sm doping, which was confirmed by XPS measurements.

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Synthesis and magneto-optical studies of novel Ni0.5Zn0.5Fe2O4/ Zn0.95Co0.05O nanocomposite as a candidate for photocatalytic applications

Cited by 20 publications

References 76 publications

Fabrication, characterization, and antibacterial activity of ferrite, chromite, and aluminate nanoparticles

Fabrication, characterization, and antibacterial activity of ferrite, chromite, and aluminate nanoparticles

Comparative study between oxide/soft ferrite, oxide/hard ferrite, and soft/hard ferrite nanocomposites: structural, electrical, and magnetic properties

Structural, Magnetic, and Mössbauer Investigation of Mg-Ni-Co ferrites doped by Sm³⁺ sions

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Synthesis and magneto-optical studies of novel Ni0.5Zn0.5Fe2O4/ Zn0.95Co0.05O nanocomposite as a candidate for photocatalytic applications

Cited by 20 publications

References 76 publications

Fabrication, characterization, and antibacterial activity of ferrite, chromite, and aluminate nanoparticles

Fabrication, characterization, and antibacterial activity of ferrite, chromite, and aluminate nanoparticles

Comparative study between oxide/soft ferrite, oxide/hard ferrite, and soft/hard ferrite nanocomposites: structural, electrical, and magnetic properties

Structural, Magnetic, and Mössbauer Investigation of Mg-Ni-Co ferrites doped by Sm3+ sions

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Structural, Magnetic, and Mössbauer Investigation of Mg-Ni-Co ferrites doped by Sm³⁺ sions