A5006236619- X-ray Diffraction in Crystallography
- Crystal Structures and Properties
- Chemical Synthesis and Characterization
- Crystallization and Solubility Studies
- Magnetic Properties and Synthesis of Ferrites
- Iron oxide chemistry and applications
- Solid-state spectroscopy and crystallography
- Magnetic properties of thin films
- Copper-based nanomaterials and applications
- Multiferroics and related materials
- Inorganic Fluorides and Related Compounds
- ZnO doping and properties
- Gold and Silver Nanoparticles Synthesis and Applications
- Advanced Photocatalysis Techniques
- Catalytic Processes in Materials Science
- Nanoparticles: synthesis and applications
- Metal-Organic Frameworks: Synthesis and Applications
- Polyoxometalates: Synthesis and Applications
- Inorganic Chemistry and Materials
- Crystal structures of chemical compounds
- Magneto-Optical Properties and Applications
- Nanomaterials for catalytic reactions
- Nanoparticle-Based Drug Delivery
- Luminescence Properties of Advanced Materials
- Quantum Dots Synthesis And Properties
University of Carthage
2010-2024
École Supérieure des Sciences de l'Ingénierie Commerciale
2015-2017
Ospedale degli Infermi
2017
Université Tunis Carthage
2016
Université Sorbonne Paris Nord
2008
Centre National de la Recherche Scientifique
2008
Laboratoire de Chimie Physique
1998-2005
Fluor (United States)
2000-2002
Stoichiometric Mn0.2Zn0.8Fe2O4 monodisperse nanoparticles were prepared by the so-called polyol method. The variation of magnetization as a function magnetic field H (up to ±50 kOe) and temperature (5−320 K) investigated, for zero-field-cooled (ZFC) field-cooled (FC) conditions on freshly produced powder. T low-field (H = 200 Oe) susceptibility is characteristic superparamagnets with blocking below room temperature. low (T 5 exhibits hysteresis loop. coercivity weak, about 0.2−0.3 kOe, which...
Highly crystalline CoFe2O4 nanoparticles with different diameters ranging from 2.4 to 6.1 nm have been synthesized by forced hydrolysis in polyol. The size can be controlled through adjusting the nominal water/metal molar ratio. X-ray diffraction, transmission electron microscopy, x-ray absorption spectroscopy and 57Fe Mössbauer spectrometry were employed investigate structure microstructure of particles produced. Magnetic measurements performed on these show that they are superparamagnetic...
Highly crystalline, nanometre sized ZnFe2O4 particles with different diameters, 6.6 and 14.8 nm, were prepared by forced hydrolysis in a polyol medium. The DC magnetic properties exhibit strong dependence on the particle size as result of unusual cation distribution. They clearly establish their superparamagnetic character at room temperature occurrence ferrimagnetic or ferromagnetic ordering low temperature. magnetization is found to increase grain reduction. 57Fe Mössbauer spectra recorded...
In this work, we report on the synthesis of hybrid Au–Fe3O4 nanoparticles (NPs) using a novel one-pot method that makes use triethylene glycol as solvent, reducing agent, and stabilizing layer. The produced consist Au cores decorated with magnetite Fe3O4 nanoparticles. Optical absorption measurements combined numerical simulations showed exhibit localized surface plasmon resonance clearly red-shifted respect to bare This strong plasmonic is exploited produce surface-enhanced Raman scattering...
The structure and microstructure of polyol-made non-stoichiometric Mn–Zn ferrite nanoparticles were successfully investigated correlated to their catalytic properties toward dimethyl ether oxidation reaction.
Synthesis of titanium dioxide (TiO<sub>2</sub>) nanoparticles by a new one-pot solvothermal process.
The effects of annealing on the magnetic properties nanocrystalline Ni1−xZnxFe2O4 (x = 0.2, 0.4) have been studied. as-prepared x 0.2 and 0.4 samples with particle size about 6 nm present a relatively low blocking temperature 47 53 K, respectively, as derived from peak zero-field-cooled direct current (dc) susceptibility measurements. significantly increases after annealing. Up to 800 °C, is found increase increasing size, whereas effective anisotropy constant exhibits maximum for an 400 °C....
We examined the effects of iron oxide nanoparticles (IONPs) on mitochondrial respiratory chain complexes activities and coupling in young (3 months) middle-aged (18 rat liver, organ largely involved body detoxification. Isolated liver mitochondria were extracted using differential centrifugations. Maximal oxidative capacities (V(max), I, III, IV activities), V(succ) (complexes II, V tmpd, (complex activity), together with (V(max)/V0) determined controls conditions after exposure to 250, 300,...
In this work, we investigate the optical properties of triangular gold nanoprisms synthesized following a one-pot chemical process and using triethylene glycol (TREG) polyvinylpyrrolidone (PVP) as solvent capping agents. The sustain strong localized surface plasmon resonance (LSPR) which is exploited in surface-enhanced Raman scattering (SERS) by PVP TREG molecules present at nanoparticle surface. work focused on temporal fluctuations SERS signal. assignment observed features based density...
Abstract Nickel–zinc ferrite monodisperse nanoparticles are synthesized by forced hydrolysis in diethylenglycol. FC and ZFC susceptibility curves suggest that they present superparmagnetic behaviour with a blocking temperature between 63 15 K depending on the zinc content. The saturation magnetization of nanocrystals at 5 is very close to bulk materials, high compared similar particles prepared other chemical routes. High Resolution Transmission Electron Microscopy In‐field Mössbauer studies...
Transfer of Fe nanoparticles into water using phosphonates.