A Review on the Development of XRD in Ferrite Nanoparticles

Jain, Richa

doi:10.1007/s10948-022-06213-9

Cited by 19 publications

(5 citation statements)

References 48 publications

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“…The XRD patterns for the X1, X2, and X3 nanoparticles synthesized with the coprecipitation method are shown in Figure 1 a,b,c. The diffraction peaks were indexed for the ferrite phase without any additional peaks corresponding to the impurity phases of ZnO, MnO 2 , Fe 2 O 3 , and CoO, which were expected from the precursors used for the synthesis [ 20 , 21 ]. The average crystallite sizes of the nanoparticles were obtained from FWHM of the highest intensity peak (311) using the Scherrer formula [ 22 ].…”

Section: Resultsmentioning

confidence: 99%

Evaluation of Antiproliferative Properties of CoMnZn-Fe2O4 Ferrite Nanoparticles in Colorectal Cancer Cells

Narayanaswamy,

Rah,

Al-Omari

et al. 2024

Pharmaceuticals

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The PEG-coated ferrite nanoparticles Co0.2Mn0.6Zn0.2Fe2O4 (X1), Co0.4Mn0.4Zn0.2Fe2O4 (X2), and Co0.6Mn0.2Zn0.2Fe2O4 (X3) were synthesized by the coprecipitation method. The nanoparticles were characterized by XRD, Raman, VSM, XPS, and TEM. The magnetic hyperthermia efficiency (MH) was determined for PEG-coated nanoparticles using an alternating magnetic field (AMF). X2 nanoparticles displayed the highest saturation magnetization and specific absorption rate (SAR) value of 245.2 W/g for 2 mg/mL in a water medium. Based on these properties, X2 nanoparticles were further evaluated for antiproliferative activity against HCT116 cells at an AMF of 495.25 kHz frequency and 350 G strength, using MTT, colony formation, wound healing assays, and flow cytometry analysis for determining the cell viability, clonogenic property, cell migration ability, and cell death of HCT116 cells upon AMF treatment in HCT116 cells, respectively. We observed a significant inhibition of cell viability (2% for untreated control vs. 50% for AMF), colony-forming ability (530 cells/colony for untreated control vs. 220 cells/colony for AMF), abrogation of cell migration (100% wound closure for untreated control vs. 5% wound closure for AMF), and induction of apoptosis-mediated cell death (7.5% for untreated control vs. 24.7% for AMF) of HCT116 cells with respect to untreated control cells after AMF treatment. Collectively, these results demonstrated that the PEG-coated (CoMnZn-Fe2O4) mixed ferrite nanoparticles upon treatment with AMF induced a significant antiproliferative effect on HCT116 cells compared with the untreated cells, indicating the promising antiproliferative potential of the Co0.4Mn0.4Zn0.2Fe2O4 nanoparticles for targeting colorectal cancer cells. Additionally, these results provide appealing evidence that ferrite-based nanoparticles using MH could act as potential anticancer agents and need further evaluation in preclinical models in future studies against colorectal and other cancers.

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Section: Resultsmentioning

confidence: 99%

Evaluation of Antiproliferative Properties of CoMnZn-Fe2O4 Ferrite Nanoparticles in Colorectal Cancer Cells

Narayanaswamy,

Rah,

Al-Omari

et al. 2024

Pharmaceuticals

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“…The characteristic peak (28.5) with the highest peak intensity was selected as a typical peak to evaluate the change of full width at half-maximum of the calcium fluoride crystals. The full width at half-maximum of the calcium fluoride crystals increased from 0.258 to 0.697 with an increase in the doping amount of sulfate, which could indicate a worsened crystallinity of calcium fluoride due to the doped sulfate 51,52 (Figure 4b). The size of calcium fluoride crystallites decreased accordingly, from 38.0 to 14.6 nm (Figure 4c).…”

Section: Effect Of Sulfate Doping In the Calcium Fluoride Crystalsmentioning

confidence: 99%

Sulfate Doping Promotes Agglomeration of Calcium Fluoride Crystals

Wang,

Zhang,

et al. 2024

Environ. Sci. Technol.

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Calcium salt precipitation is an effective solution to wastewater fluoride pollution. The purity and precipitation efficiency of calcium fluoride is critical for its removal and recovery. This study aimed to reveal the role of coexisting sulfates in the precipitation of calcium fluoride. A low sulfate concentration promoted calcium fluoride precipitation. The size of calcium fluoride-aggregated particle clusters increased from 750 to 2000 nm when the molar ratio of sulfate to fluoride was increased from 0 to 3:100. Sulfate doped in the calcium fluoride crystals neutralized the positive charge of the calcium fluoride. Online atomic force microscopy measurements showed that sulfate reduced the repulsive force between calcium fluoride crystals and increased the adhesion force from 1.62 to 2.46 nN, promoting the agglomeration of calcium fluoride crystals. Sulfate improved the precipitation efficiency of calcium fluoride by promoting agglomeration; however, the purity of calcium fluoride was reduced by doping. Sulfate reduced the induction time of calcium fluoride crystallization and improved the nucleation rate of calcium fluoride. Sulfate should be retained to improve the precipitation of calcium fluoride and to avoid its loss from the effluents. However, it is necessary to separate sulfate from fluoride to obtain highpurity calcium fluoride. Therefore, sulfate concentration regulation in high-fluoride wastewater is key to achieving the efficient removal and recovery of fluoride ions.

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“…Therefore, the lattice parameters were calculated to further differentiate the XRD patterns of the materials before and after the DES polymerization. 91 Wu et al obtained single and irregular prominent packet peaks in the polycrystalline X-ray diffraction (PXRD) characterization pattern of DESP adhesives from CDs/ natural acids (Fig. 9B) and natural sugars/acids (Fig.…”

Section: X-ray Diffractionmentioning

confidence: 99%