Synthesis and Structural Investigation of Nano-Sized Cadmium Ferrite

Shedam, Rakesh M.; Gadkari, Ashok B.; Mathad, S. N.; Shedam, Mahadev R.

doi:10.21467/jmm.2.1.7-12

Cited by 18 publications

(6 citation statements)

References 19 publications

(20 reference statements)

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“…Table 1 shows the calculated a and d values. The observed and calculated d values are in good agreement for all samples (Shedam et al, 2016). The X-ray density (D x ) of Cu 0.5 F and Cu 0 F was calculated using Eq.…”

Section: Characterization Methods Xrd Studiessupporting

confidence: 53%

Synthesis, Characterization, and Antimicrobial Activities of CuxFe3-xO4/PANI Nanocomposites

Eid

El‐Helaly

El-Sheikh

et al. 2022

Egypt. J. Microbiol.

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M AGNETIC nanocomposites loaded with antimicrobial drugs have grown in popularity for treating infectious diseases due to their magnetic properties and the ability to penetrate bacteria cells. In this research, Cu x Fe 3-x O 4 nanoparticles and Cu x Fe 3-x O 4 /PANI nanocomposites were synthesized, characterized, and examined for their antimicrobial activity. The in-situ oxidative polymerization of aniline in the presence of Cu x Fe 3-x O 4 nanoparticles produced Cu x Fe 3-x O 4 /PANI nanocomposites with distinct spinel ferrites. XRD, FT-IR, VSM, SEM, EDX, TEM, and XPS techniques confirmed the successful synthesis of the Cu x Fe 3-x O 4 /PANI nanocomposites. The analysis of magnetization patterns of Cu x Fe 3-x O 4 /PANI nanocomposites revealed their superparamagnetic characteristics. With increasing Cu 2+ ratios, both the pure copper ferrites nanoparticles and the Cu x Fe 3-x O 4 /PANI nanocomposites exhibited enhanced antimicrobial effects against gram-positive (Staph), gram-negative (E. coli, P. aeruginosa, and K. pneumoniae), and fungi such as (C. albicans), which is consistent with decreasing the order of crystal size (nm) and the lattice strain, where crystal size and lattice strain decreased with increasing Cu 2+ ratio. SEM micrographs revealed changes in bacterial shape, deformation of fungal cell walls, and bacterial and yeast colonies collapsing. Furthermore, the nanocomposites are more effective against gram-negative bacteria and Candida albicans than gram-positive bacteria, displaying the alteration of bacterial shape, fungal cell wall deformation, and collapsing bacterial and yeast colonies. The results presented an approach for using Cu x Fe 3-x O 4 and Cu x Fe 3-x O 4 /PANI as an alternative promising antimicrobial agent against several multidrugresistant microbes.

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Section: Characterization Methods Xrd Studiessupporting

confidence: 53%

Synthesis, Characterization, and Antimicrobial Activities of CuxFe3-xO4/PANI Nanocomposites

Eid

El‐Helaly

El-Sheikh

et al. 2022

Egypt. J. Microbiol.

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“…A dislocation inside a crystal structure is a crystallographic defect (slight misalignment), which greatly affects the properties of materials. The standard atomic array of the perfect crystals is skewed by this defect [22][23][24][25][32][33][34]. Within the crystal lattices, the strain confirms the existence of defects.…”

Section: Discussionmentioning

confidence: 77%

“…The mean crystallite size of the Cu 1.5 Mn 1.5 O 4 particles was calculated depending upon Scherer's formula. The values of the crystallite size (D), X-ray density (Dx), unit cell volume (V), lattice constant (a), dislocation density (δ), micro-strain (ε), the distance between the reacting ions (LA and LB) and bond lengths (A-O and B-O) on tetrahedral (A) sites and octahedral (B) sites in the spinel Cu 1.5 Mn 1.5 O 4 NPs are shown in Table 2 [22][23][24][25].…”

Section: Xrd Investigationmentioning

confidence: 99%

Fabrication of Cu1.5Mn1.5O4 Nanoparticles Using One Step Self-Assembling Route to Enhance Energy Consumption

2021

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The preparation of copper manganite (hopcalite, Cu1.5Mn1.5O4), as a single phase, was achieved by using a sustainable method of green synthesis. This method is based on the replacement of the conventional “brute force” ceramic preparation by the recent “soft force” green synthesis via the egg white assisted one-step method. In other words, we present a facile and rapid methodology to prepare the nanocrystalline Cu1.5Mn1.5O4 spinel as a single phase, compared to our previous work using ceramic and glycine-assisted combustion methods. The as-synthesized copper manganite was characterized using X-ray diffraction (XRD), Fourier-transform infrared (FTIR), energy-dispersive spectroscopy (EDS), and scanning electron microscope (SEM). We used a vibrating sample magnetometer to determine the magnetic properties of the prepared sample (VSM). XRD, FTIR, SEM, EDS and transmittance electron micrograph (TEM) resulted in synthesis of a successful cubic spinel Cu1.5Mn1.5O4 system with a sponge crystal structure. The particles of the prepared materials are polycrystalline in their nature and the sizes ranged between 50 and 100 nm. The magnetic measurement demonstrated that the generated nanostructure has been found to exhibit ferromagnetism at room temperature with an optimum saturation magnetization value (0.2944 emu/g).

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“…The observed and calculated d values are in good agreement for all samples. [ 57 ] The X‐ray density d x of the samples I and IV were calculated using the following equation:

dx = \frac{8 M}{N a^{3}},

where M is the molecular weight, N is Avogadro's number, and a is the lattice constant of the spinel ferrite. The calculated values of d x for samples I and IV were 5.35 and 5.20 g/cm 3 , respectively.…”

Section: Resultsmentioning

confidence: 99%

Bifunctional manganese ferrite nanoparticles: Tuning their efficiency for aniline polymerization and polyaniline nanocomposites for boosting adsorption of organic dyes

Gemeay

El‐Helaly

Elsheikh

et al. 2022

J Chinese Chemical Soc

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The uniqueness of this work is the comparison of manganese ferrites/ polyaniline (Mn x Fe 3 À x O 4 /PANI) produced using K 2 S 2 O 8 as an oxidant for aniline with the efficacy of spinel manganese ferrite with various Mn 2+ ratios for the polymerization of aniline. The structural and morphological properties of the nanocomposites were characterized by thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FT-IR), X-ray powder diffraction (XRD), vibrating sample magnetometer (VSM), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), and Brunauer-Emmett-Teller (BET) techniques. XRD results confirmed the formation of a single-phase cubic spinel structure with a lattice constant of approximately 8.3 Å. The surface enriched by Mn 2+ exhibited an enhanced valence of +3 and +4, increased lattice oxygen content, facilitated ferrite reduction, and improved the oxidative performance of Fe 3+ . The saturation magnetization decreased with an increase in Mn +2 ratios and PANI contents. The nanocomposites exhibited excellent adsorption of Lanaset Brown B dye, which was investigated as a model textile dye. Various adsorption capacities (q max ) for the nanocomposites were calculated in a range of 122.39-215 mg/ g, depending on the synthesis conditions. Optimization parameters, such as pH, adsorbent dose, and initial concentration, as well as reusability, were described. The Langmuir isotherm is a better model for describing the adsorption process of the nanocomposites. An evaluation of thermodynamic parameters suggests the sorption process is feasible, spontaneous, and endothermic. K E Y W O R D S adsorption, green synthesis, Lanaset Brown B dye, Mn x Fe 3Àx O 4 /PANI, polyaniline nanocomposites

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Synthesis and Structural Investigation of Nano-Sized Cadmium Ferrite

Cited by 18 publications

References 19 publications

Synthesis, Characterization, and Antimicrobial Activities of CuxFe3-xO4/PANI Nanocomposites

Synthesis, Characterization, and Antimicrobial Activities of CuxFe3-xO4/PANI Nanocomposites

Fabrication of Cu1.5Mn1.5O4 Nanoparticles Using One Step Self-Assembling Route to Enhance Energy Consumption

Bifunctional manganese ferrite nanoparticles: Tuning their efficiency for aniline polymerization and polyaniline nanocomposites for boosting adsorption of organic dyes

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