X-ray line profile analysis and magnetic and optical properties of FexZn0.95-xCr0.05O nanoparticles fabricated by sol-gel route

Balsure, S. D.; Gurav, M.M.; Kadam, R.H.; Haval, Kishan P.; Tigote, Radhakrishnan M.; Kadam, A. B.

doi:10.1590/0366-69132022683853187

Cited by 8 publications

(3 citation statements)

References 61 publications

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“…Moreover, from the XRD patterns, the dislocation density (δ, line m ‐2 ) and the micro‐strain (ε) in the crystal structure of our samples were determined via Eq. 2 [ 17 ] and Eq. 3 (based on Williamson‐Hall method [ 18 ] ), respectively.…”

Section: Methodsmentioning

confidence: 99%

Synthesis of Al‐doped and Fe–doped ZnO nanoparticles as UV filters in sunscreens

Le,

Ngoc,

Nguyen

et al. 2023

Vietnam Journal of Chemistry

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In this work, Al‐doped ZnO and Fe‐doped ZnO nanoparticles have been synthesized through the coprecipitation‐annealing method to create new and safer UV filters for sunscreen. The effects of metal doping on phase composition, crystal structure, surface morphology, specific surface area, and elemental composition were characterized by X‐ray diffraction, Raman spectroscopy, field emission electron scanning microscopy, nitrogen adsorption‐desorption experiments and energy‐dispersive X‐ray spectroscopy, respectively. The optical properties and photocatalytic activity of prepared powders were studied through UV‐visible diffuse reflectance spectroscopy and photocatalytic degradation of methylene blue under UV radiation. According to the experimental results, Al or Fe‐doped ZnO nanoparticles showed better UV absorption but significantly lower photocatalytic activity than the undoped ZnO sample, which enables the metal doped ZnO samples to become more effective and safer UV filter in sunscreen. The decline of photocatalytic activity can be attributed to the bulk defects caused by the insertion of Al3+ or Fe3+ ions in ZnO lattice. In particular, the sunscreen formulations using the metal doped ZnO nanoparticles display high SPF values and diverse colors changing from ivory to yellow‐brown, preventing leaving white cast on the skin, which is very suitable as sunscreen for people of color.

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Section: Methodsmentioning

confidence: 99%

Synthesis of Al‐doped and Fe–doped ZnO nanoparticles as UV filters in sunscreens

Le,

Ngoc,

Nguyen

et al. 2023

Vietnam Journal of Chemistry

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“…Longitudinal and transverse wave velocities (V l and V t ) were evaluated by using following relations [28]: 3…”

Section: Infrared Spectroscopy and Mechanical Propertiesmentioning

confidence: 99%

Effect of cation distribution on structural and mechanical properties of Y³⁺ substituted Co-Zn spinel ferrites nanoparticles.

Nikam

Birajdar²,

Kadam³

et al. 2023

J. Phys.: Conf. Ser.

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Yttrium (Y3+) substituted Co-Zn spinel ferrite nanoparticles with compositional formula Co0.9Zn0.2YxFe1.9-xO4 (x = 0.0, 0.015, 0.030, 0.045, 0.06) were synthesized by using sol-gel auto-ignition route. The structural and mechanical properties of Co-Zn ferrites were tailored by the replacement of Fe3+ ions by Y3+ ions. Rietveld refined X-ray diffraction patterns of all the samples confirm the cubic spinel structure. Lattice parameter increases with the substitution of Y3+ ions which may be due to the difference in ionic radii. The crystallite size obtained from XRD analysis is found in the nanometer range of 16.8 – 24.7 nm. Distribution of cations over tetrahedral – A and octahedral – B sites have been studied by using X-ray diffraction data and it is found that Y3+ ions prefers the octahedral – B site. Infrared spectra of all the samples were recorded in the wave number range of 300 cm−1 to 800 cm−1 which shows splitting of the two fundamental absorption bands. Two absorption bands (ν1 and ν2) observed in the range 380 – 610 cm−1 are belongs to tetrahedral – A and octahedral – B interstitial sites. The force constants (KO and Kt) and corresponding elastic parameters were determined by using IR data. The stiffness constant (C11), Young’s modulus (E), rigidity modulus (G), bulk modulus (B) and Debye temperature (θD) were found increases with the addition of Y3+ ions.

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“…The benefit of this method is that the little significance is given to the results obtained from higher reflection angles. This approximation considers that the size profile described from Lorentzain function while as the strain profile by Gaussian function [27] and the relation is given by;…”

Section: Williamson -Hall and Size -Strain Plot Analysismentioning

confidence: 99%

Williamson-Hall and Size-strain plot based micro-structural analysis and evaluation of elastic properties of Dy³⁺ substituted Co-Zn nano-spinels

Nikam¹,

Kadam

Shitole

et al. 2023

J. Phys.: Conf. Ser.

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Polycrystalline Co-Zn nanoferrites doped with rare earth Dy3+ ions having general chemical formula Co0.9Zn0.2DyxFe1.9-xO4 (x = 0.0, 0.015, 0.03, 0.045 and 0.06) were synthesized via sol-gel auto-combustion route. Powder X-ray diffraction (XRD), scanning electron microscopy (SEM) and Fourier transform Infrared Spectra (FTIR) were performed to investigate the structural, microstructral, surface morphology and elastic properties. Well indexed XRD patterns confirm the phase purity and cubic spinel structure of the samples. Fractional doping of Dy3+ ions shifts the Bragg’s lines slightly towards the lower angles which in turn increases the lattice lengths from 8.3795 Å to 8.3834 Å. The strain induced in the crystal lattice was estimated by using Williamson-Hall and Size – Strain Plot methods. Both methods confirm that the tensile type strain was induced in the crystal lattice and increases with the substitution of Dy3+ ions. Surface morphology of the samples was studied by using SEM images which reveals that the grains are almost spherical in nature and the size obtained is analogues with XRD results. FTIR spectra shows the existence of two main absorption bands within the wave number range 388 – 586 cm−1 which confirm the characteristics of spinel ferrites. Elastic properties were estimated by using FTIR data. Elastic moduli and Debye temperature increases with the substitution of Dy3+ ions which are interpreted on the basis of interatomic bondings.

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X-ray line profile analysis and magnetic and optical properties of FexZn0.95-xCr0.05O nanoparticles fabricated by sol-gel route

Cited by 8 publications

References 61 publications

Synthesis of Al‐doped and Fe–doped ZnO nanoparticles as UV filters in sunscreens

Synthesis of Al‐doped and Fe–doped ZnO nanoparticles as UV filters in sunscreens

Effect of cation distribution on structural and mechanical properties of Y³⁺ substituted Co-Zn spinel ferrites nanoparticles.

Williamson-Hall and Size-strain plot based micro-structural analysis and evaluation of elastic properties of Dy³⁺ substituted Co-Zn nano-spinels

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X-ray line profile analysis and magnetic and optical properties of FexZn0.95-xCr0.05O nanoparticles fabricated by sol-gel route

Cited by 8 publications

References 61 publications

Synthesis of Al‐doped and Fe–doped ZnO nanoparticles as UV filters in sunscreens

Synthesis of Al‐doped and Fe–doped ZnO nanoparticles as UV filters in sunscreens

Effect of cation distribution on structural and mechanical properties of Y3+ substituted Co-Zn spinel ferrites nanoparticles.

Williamson-Hall and Size-strain plot based micro-structural analysis and evaluation of elastic properties of Dy3+ substituted Co-Zn nano-spinels

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Product

Resources

About

Effect of cation distribution on structural and mechanical properties of Y³⁺ substituted Co-Zn spinel ferrites nanoparticles.

Williamson-Hall and Size-strain plot based micro-structural analysis and evaluation of elastic properties of Dy³⁺ substituted Co-Zn nano-spinels