Showing papers by "Mohamed Bououdina published in 2017"
TL;DR: The effect of Zn-doping in CoFe2O4 nanoparticles (NPs) through chemical co-precipitation route was investigated in term of structural, optical, and magnetic properties; the magnetic properties are remarkably influenced with Zn doping.
Abstract: The effect of Zn-doping in CoFe2O4 nanoparticles (NPs) through chemical co-precipitation route was investigated in term of structural, optical, and magnetic properties. Both XRD and FTIR analyses confirm the formation of cubic spinel phase, where the crystallite size changes with Zn content from 46 to 77 nm. The Scherrer method, Williamson-Hall (W-H) analysis, and size-strain plot method (SSPM) were used to study of crystallite sizes. The TEM results were in good agreement with the results of the SSP method. SEM observations reveal agglomeration of fine spherical-like particles. The optical band gap energy determined from diffuse reflectance spectroscopy (DRS) varies increases from 1.17 to 1.3 eV. Magnetization field loops reveal a ferromagnetic behavior with lower hysteresis loop for higher Zn content. The magnetic properties are remarkably influenced with Zn doping; saturation magnetization (Ms) increases then decreases while both coercivity (HC) and remanent magnetization (Mr) decrease continuously, which was associated with preferential site occupancy and the change in particle size.
158 citations
TL;DR: In this article, the cation distribution of the spinel system Zn1-xCoxFe2O4 has been investigated by means of X-ray diffraction (XRD), Mossbauer spectroscopy and Fourier transform infrared spectrograph (FTIR).
144 citations
TL;DR: In this article, pure and Cu+2 doped TiO2 thin films have been successfully deposited onto glass substrate by sol-gel dip-coating and characterized by X-ray diffraction, scanning electron microscopy (SEM-EDX), atomic force microscopy, and UV-vis spectrophotometer and photocatalytic degradation of methylene blue.
140 citations
TL;DR: Zn1−xNixO with 0.2 nanoparticles (NPs) were prepared by co-precipitation with subsequent annealing at 500°C for 2.h as mentioned in this paper.
121 citations