A5038537433- Ferroelectric and Piezoelectric Materials
- Dielectric properties of ceramics
- Microwave Dielectric Ceramics Synthesis
- Advancements in Battery Materials
- Conducting polymers and applications
- Multiferroics and related materials
- Dielectric materials and actuators
- Phytochemicals and Antioxidant Activities
- Graphene research and applications
- Electronic and Structural Properties of Oxides
- Water Quality Monitoring and Analysis
- Edible Oils Quality and Analysis
- Graphite, nuclear technology, radiation studies
- Herbal Medicine Research Studies
- Essential Oils and Antimicrobial Activity
- Advanced Battery Materials and Technologies
- Perovskite Materials and Applications
- Cassava research and cyanide
- Arsenic contamination and mitigation
- Wildlife Ecology and Conservation
- Solid-state spectroscopy and crystallography
- Plant biochemistry and biosynthesis
- Electrostatics and Colloid Interactions
- Phytochemistry and Biological Activities
- Polydiacetylene-based materials and applications
Sidi Mohamed Ben Abdellah University
2015-2024
Agence pour le Développement et la Réhabilitation de la Ville de Fès
2018-2019
Laboratoire d'Electrochimie Moléculaire
1989-1993
Université de Reims Champagne-Ardenne
1989-1990
Laboratoire de Réactivité et Chimie des Solides
1989
Laboratoire de Chimie
1989
Corrosion inhibition performance of three new synthesized novel compounds namely, 1- ((3,6di(pyridin-2-yl)pyrdazin-4-yl)methyl)-indoline-2,3-dione (FM1), 4-(morpholinomethyl)-3,6di(pyridin-2-yl)pyridazine (FM2) and 3,6-di(pyridin-2-yl)-4-(p-tolyl)-pyridazine (FM3) on mild steel (MS) was investigated by HCl with 1 M concentration.The corrosion the studied weight lοss, impedance spectroscopy(EIS) potentiodynamic polarization (PDP) methods.The results showed that tһe efficiency increases...
This work aimed to evaluate the polyphenol and flavonoid composition, antioxidant antibacterial activity of leaf, fruit pulp extracts Chamaerops humilis L. Dry leaves, fruits were prepared by ultrasonic extraction examined as potential sources phenolic compounds flavonoids.Different methods used extracts, including DPPH free radical scavenging assay total capacity (TAC).The content (TPC) (TFC) tested Folin-Ciocalteu aluminium chloride (AlCl 3 ) methods, respectively.The against a collection...
The effect of the addition Ca on physicochemical properties PbTiO<sub>3</sub> (Pb<sub>1−x</sub>Ca<sub>x</sub>TiO<sub>3</sub>; 0 ≤ <italic>x</italic> 1) synthesized by a hydrothermal method at low temperatures.
This paper presents a comprehensive investigation on the synthesis, characterization, and dielectric properties of BaFeO3-x material. The solid-state process was utilized, employing high-purity BaCO3 Fe2O3 precursors. calcination step at different temperatures (800 °C, 900 1000 °C) revealed that sample calcined °C exhibited desired perovskite phase with no impurities. Morphological analysis through scanning electron microscopy (SEM) homogenous cubic grains well-defined shapes sizes. sintered...
In the present work, treatment of a leachate from Fez city urban sanitary landfill (Morocco) was evaluated using different advanced oxidation processes (AOPs), such as, Fenton (Fe2+/H2O2), photo-Fenton (Fe2+/H2O2/UV-A), UV-A and UV-A/H2O2. The characterized by high chemical oxygen demand (COD), low biodegradability intense dark color. efficiency as function operation variables ([H2O2], [Fe2+], irradiance), resulting in COD removals between 30% 77%. Removal efficiencies decreased following...
Perovskite ceramic materials of the composition Pb1-xSrxTiO3 (PSxT) were prepared by hydrothermal process at a relatively low temperature. The solution KOH favours solubility precursors in solid state. Pressure and temperature are critical factors for formation pure perovskite PSxT phase. reaction mixture stoichiometric amount is put an autoclave treated 180 ºC 24 h. powder obtained after grinding 400 4 X-ray diffraction shows that compounds crystallize phase type. SEM morphology indicates...
In this study, hydrothermal synthesis conditions for the formation of (1-x (Na0.5Bi0.5)TiO3-xBaTiO3Â (x=0; 0.03; 0.05; 0.06; 0.07; 0.08 and 0.1)Â compounds were investigated. The process parameters such as alkaline heating treatment (temperature, time) well influence (Na, Bi)/Ba ratio investigated in detail. as-prepared NBT powders characterized by X-ray powder diffraction, scanning electron microscope (SEM) dielectric measurements. Taking into account behavior draws consideration to...
Analysis of biological diversity in woody habitats is crucial for the implementation suitable conservation policies. We carried out monthly field visits using point count method avian species and walked-transect surveys mammals reptiles from January 2018 to December 2021 Fez, El Hajeb Sefrou, central Morocco. The studied sites were steppes dominated by Chamaerops humilis. A total 90 bird, 12 mammal 8 reptile documented. Furthermore, two concern, i.e., vulnerable European turtle dove...
In this paper, the synthesis of ferroelectric (1-x)(Na0.5Bi0.5)TiO3-xBaTiO3 ceramics different compositions (x=0.00, 0.03, 0.05, 0.06, 0.07, 0.08, 0.1wt%) around morphotropic phase boundary (MPB) by hydrothermal reaction technique has been reported. The XRD patterns recorded at room temperature proved perovskitetype structure formation. Furthermore, analysis revealed transition from rhombohedral (x = 0) to tetragonal ⩾ 0.08). Using Rietveld refinement method which allow us verify...
Abstract New lacunary Keggin type polyoxometalate salts (Ni 2.5 PMo 11 M (H 2 O)O 39 / = Co, Fe, Cu, Zn), were synthesized using the inorganic condensation method. X-ray diffraction and infrared spectroscopy results showed that structure of was preserved. The thermal stability checked by differential scanning calorimetry coupled with thermogravimetric analysis showing resistance significantly improved incorporation metals into polyoxometalates. Proton molybdenum substitution respectively...
In this work, the effect of nickel (Ni) insertion on structural and dielectric properties BaTiO3 material was investigated. A series powders composition Ba1-xNixTiO3 (x = 0, 0.05, 0.1, 0.15 0.20) were synthesized by solid method. The analysis X-Ray Diffraction (XRD) shows that obtained compounds crystallize in a phase perovskite type. All peaks are indexed quadratic symmetry. Characterization Scanning Electron Microscope (SEM) indicates heterogeneous microstructure grains. study spectroscopy...
<p>In this study, hydrothermal synthesis conditions for the formation of (1-x (Na<sub>0.5</sub>Bi<sub>0.5</sub>)TiO<sub>3</sub>-xBaTiO<sub>3</sub> (x=0; 0.03; 0.05; 0.06; 0.07; 0.08 and 0.1) compounds were investigated. The process parameters such as alkaline heating treatment (temperature, time) well influence (Na, Bi)/Ba ratio investigated in detail. as-prepared NBT powders characterized by X-ray powder diffraction, scanning electron...
The composite materials of (1-x)CaCu3Ti4O12, xPbTiO3((1-x)CCTO−xPT) were prepared by a modified solid-state method in several steps. Rietveld refinement indicates the formation pure cubic and tetragonal phases for calcium copper titanate (CCTO) lead-titanate (PT) ceramics, respectively. While CCTO-PT composites, coexistence two was detected with space group Im-3 P4mm, Raman spectra confirmed these phase formations. SEM images indicated change grains shape from quadratic to semi-spherical...
In this paper, structural, dielectric and electrical properties of calcium copper titanate PbZr0.65Ti0.35O3 ceramic composite with composition (1-x) CaCu3Ti4O12 – (x) (where x = 0.00, 0.30, 0.50, 0.70 1.00) has been distinguished. The sample was prepared by employing a high temperature solid state reaction technique synthesized sol-gel route. X-ray diffraction (XRD), scanning electron micrograph (SEM), FT-IR spectrum (IR) used to reach the structural studied compounds. XRD IR studies confirm...
The influences of calcination temperature and doping with cobalt in A–site on structural dielectric properties CaCu3-xCoxTi4O12 (CCCxTO, x = 0.00, 0.02 0.10) ceramics sintered at 1050 0C for 8h were investigated. ceramic samples are prepared by the conventional solid-state method using high purity oxide powders, they calcined 850 °C, 950 °C 4h. X-ray diffraction (XRD) analysis pure doped CCTO showed no traces any other secondary phases, while impurity phases alongside phase x=0.00 sample...