Menasra Hayet- Professor
- Professor at Université de Biskra
Menasra Hayet
- Professor
- Professor at Université de Biskra
About
42
Publications
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273
Citations
Introduction
Current institution
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January 2005 - present
Publications
Publications (42)
The study investigated the adsorption capacity of Pinus halepensis Mill biomass (PHM) that has been modified to remove nickel (II) from aqueous solutions. The underwent chemical modification using zinc chloride (0.1N) to produce activated carbon. The resultant products were analyzed using Fourier transform infrared spectroscopy, scanning electron m...
This study presents a novel approach for synthesizing high-performance Bi4Ti3O12 trilayer-doped bio-calcium derived from snail shells using the molten salt technique at 850 °C. Three catalysts were prepared with varying amounts of bio-calcium (Bi(4−x)CaxTi3O12), where (x1 = 0.05, x 2 = 0.1, x3 = 0.15), it was observed that this activation led to an...
The study focuses on optimizing molybdenum extraction using N-(2-hydroxybenzylidene) aniline (HAS) through ultrasonic-assisted and conventional methods. Ultrasonic-assisted extraction reached equilibrium in just 15 seconds, compared to the 15 minutes required by conventional extraction. The research explored the influence of various factors, includ...
The perovskite powder La0.75Gd0.25FeO3, abbreviated as LGFO, has been successfully synthesized via a solid–solid process and thoroughly investigated using various laboratory techniques. X-ray diffraction (XRD) analysis revealed that the studied powder exhibits an orthorhombic crystal system with the space group Pbnm, accompanied by the formation of...
As eco-friendly corrosion inhibitors, antioxidants, and antibacterial agents, this study assesses 1,3-bis(2-hydroxybenzylidene) thiourea (B1) and 1,3-bis(2-hydroxybenzylidene) urea (B2), two new Schiff bases, on their performance in these areas. We successfully synthesized these Schiff bases in just 15 minutes using an environmentally friendly appr...
This research delves into the properties of x% ZW-BT compounds (x=3% and 7%), synthesized using a solid-state reaction approach. Utilizing X-ray diffraction, the crystal structure of the x% ZW-BT compositions is confirmed, showcasing a distinct tetragonal symmetry devoid of any parasitic phases. With increasing dopant concentrations, slight reducti...
We synthesized pure and doped gadolinium, samarium, and chromium LaFeO3 denoted as LFO, LFCO, LGFCO, and LSFCO, respectively, employing a straightforward, cost-effective, and environmentally friendly solid-state method. The resulting samples were characterized through powder X-ray diffraction (PXRD), Fourier transform infrared spectroscopy (FTIR),...
This work aims to synthesis activated carbon material from potato plant waste (abbreviated as PPW) and examine the material’s ability to adsorb a cationic dye, namely Rhodamine B (RhB). ZnCl2 was used in the chemical preparation process to produce the activated carbon composite, also known as PPW-ZnO, which was achieved by pyrolyzing the precursor...
In this research, we report the synthesis and characterization of two nickel (II) complexes aimed at exploring their antibacterial properties. Salicylic and decanoic acids were chosen as ligands due to their acidic functionalities and potential for chelation, which influences complex formation and stability. Two synthetic methods, liquid-liquid ext...
In this research, we report the synthesis and characterization of two nickel (II) complexes aimed at exploring their antibacterial properties. Salicylic and decanoic acids were chosen as ligands due to their acidic functionalities and potential for chelation, which influences complex formation and stability. Two synthetic methods, liquid-liquid ext...
This study investigated the properties of Syzygium aromaticum essential oil, including its physical and chemical properties, antibacterial activity, and corrosion inhibition effect on mild steel X70 in 1M hydrochloric acid. Weight loss method was used to study the corrosion inhibitory effect. Two extraction methods were used to compare their effect...
We have enhanced the photocatalytic activity of pure BTO surfaces through the introduction of tantalum and indium oxides. These dopants facilitate the decomposition of Rhodamine B, an organic pollutant. The compound Bi 4 Ti 2.92 (Ta 0.5 , In 0.5) 0.08 O 12 , also known as 8% (Ta/In)-BTO, was successfully produced through the molten salt synthesis t...
Our work is based on using a new natural biodegradable adsorbent derived from natural residues (walnut shells) for the retention of humic substances (HS).The synthesis of obtaining the organic material is: cleaning, drying, grinding, sieving and finally heat treatment and chemical activation by lemon acid and phosphoric acid (H3PO4). Various reacti...
In this study, perovskite ceramics (Na 0.5 Bi 0.5) 1-x Ba x [(Ti 0.8 Zr 0.2) 0.9 (Nb 2/3 Zn 1/3) 0.1 ]O 3 (NB 1-x B x TZNZ) were prepared using the molten salt method. The sintering process was conducted at 1100°C for 4 hours in an air atmosphere. The crystal structure was examined using X-ray powder diffraction, which indicated that the material c...
The synthesis in a single step from charcoal nut shells (Ns) to obtained a novel Ns. Biochar/ ZnO bio-composite. The chemical activation of the Bio-carbon with a solution of ZnCl2 at 0.136 mole and neutral pH to give a pure composite at T=600 °C which is characterized by scanning electron microscope (SEM), x ray diffraction (DRX) and spectroscopy F...
The abbreviated composite Bi 4Ti3O12 /ZnWO4 (BIT/ZW) was produced using the molten salt technique at 800°C. The impact of isothermal annealing time, in the second step, on the structural, morphological, and photocatalytic properties was investigated. X-ray diffraction (XRD) confirmed the formation of composites with varying proportions (76.8% BIT,...
In this study, we synthesized and characterized pyrochlore solid solutions, specifically Bi1.5Nb1.5ZnxCu1-xO7 (with x values of 0, 0.2, 0.6, 0.8, and 1), for their potential use as catalysts in the degradation of organic pollutants. These pyrochlore compositions were prepared using the solid-solid reaction technique and thoroughly characterized thr...
This research paper aims to synthesize nano-sheets of Bi4Fe0.08Ti2.92O12, Bi3.75Ba0.25Ti3O12, and Bi3.75Ba0.25Fe0.08Ti2.92O12 using the molten salt technique. The investigation focuses on examining the structural, morphological, optical properties, and photocatalytic activities of these materials. Specifically, we study the individual and collectiv...
This study explores the synthesis of lead oxide (PbO) using sol-gel methods and its consequential effects on the structure and morphology of lead zirconate titanate (PZT) (52/48). X-ray diffraction (XRD) analysis confirms the orthorhombic massicot phase of PbO and reveals smaller crystallite sizes compared to commercially available PbO. Scanning el...
(Mg/Ta) was incorporated into Bi4Ti3O12 (BTO) crystals in this research to improve their photocatalytic activity in the degradation of organic contaminants. The (Mg/Ta)-modified BTO photocatalyst was synthesized using the molten salt (MS) process. X-ray diffraction (XRD), Fourier transform infrared (FTIR), scanning electron microscopy (SEM), X-ray...
In this study, a novel seven-layer Aurivillius phase, Bi8.75Zn0.25Ti7O27 denoted as BZT, was synthesized using the molten salt method. The investigation included an analysis of its crystal structure, morphology, optical properties, and photocatalytic performance in the degradation of rhodamine-B. X-ray diffraction (XRD) data revealed the adoption o...
Chemical precipitation using lime (Ca(OH)2), caustic soda (NaOH) and soda ash (Na2CO3) for the removal of simultaneous heavy metals (Cu(II) and Zn(II)) from industrial wastewater of the cable industry was carried out in laboratory by jar tests. For each reagent used, an improvement in copper and zinc removal efficiency was obtained by increasing th...
Abstract: The effect of 8% of (Ni2+, Ta5+) content and the route of synthesis (i.e., conventional solid state reaction « CSS
» and molten salt method « MS ») on micro-structural, morphological and dielectric properties of BIT ceramics have been
investigated. X-ray diffraction (XRD) analysis revealed that the (Ni,Ta)- modified BIT ceramics have a pu...
In the present study, (0.54 − x)Pb(Cr1/5,Ni1/5,Sb3/5)O3-0.46PbZrO3-xPbTiO3 ceramic powders were synthesized by the conventional solid-state reaction process (where x = 0.42, 0.44, 0.46, 0.48 and 0.50). The obtained samples have been characterized using different techniques such as X-ray Diffraction (XRD) which reveals that the samples consist of a...
Piezoelectric ceramics are widely used in various applications such as lead zirconate titanate (PZT), especially after the development of acceptor or donor dopant. This is why all studies are interested in the effect of dopants on the properties of PZT ceramics are in great demand. In this work, the polycrystalline samples of Pb(0.95-x) La 0.03 Sm0...
Pb(1−x)Lax [(Zr0.6Ti0.4)(1−x)
(Mn1/3Sb2/3
)x]O3 ceramics with x = 0.02, 0.03, 0.04, and 0.05 were synthesized by using a
conventional solid state reaction route. The influence of La, Mn, and Sb contents on phase structure, microstructure, and electric
properties were investigated. The results of X-ray diffraction (XRD) show that the phase structure...
Piezoelectric ceramics are widely used in various applications such as lead zirconate titanate (PZT), especially after the development of acceptor or donor dopant. This is why all studies are interested in the effect of dopants on the properties of PZT ceramics are in great demand. In this work, the polycrystalline samples of Pb(0.95-x) La 0.03 Sm0...
The main objective of this work is based on the synthesis and dielectric characterization of a new material in ceramic PZT with a perovskite structure ABO3. We are interested to study the Quaternary system (doping in site A and site B) of general formula: Pb0.96Ba0.02Ca0.02[(Zr0.52Ti0.48)0.94(Zn1/3Ta2/3)0.03(In1/3Sb2/3)0.03]O3 short PZT-PBC-ZTIS. T...
ABSTRACT
Bismuth (Bi) and lanthanum (La) doped lead manganese antimoine zirconate titanate (PZMST) ceramic powders have been synthesized by high temperature solid-state reaction method. Preliminary X-ray structural analysis of the com- pounds shows the formation of tetragonal structure. Scanning electron micrographs (SEM) shows a uniform grain dis-...
The purpose of this research is to study the effect of thermal conditions such as temperature ramp rate and isothermal times in the phase formation of Pb(Zr1-xTix)O3 solid solutions with composition near the morphotropic phase boundary (MPB) by using the conventional ceramic method. The perovskite phase formation and morphology of undoped Pb(Zr0.52...
Some new functionalized aziridine derivatives containing quinolyl moieties were prepared as mixtures cis/trans in the ratio 60/40 in good yields by action of dry bromine on quinolyl α,β-unsaturated ketones or esters at 0°C, followed by an amination reaction. Résumé : Quelques dérivés d'aziridines fonctionnalisés nouveaux contenant le motif quinoléi...
ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
The synthesis of some new functionalized quinolyl derivatives relies on the 1,3-dipolar cycloaddition of an azomethine ylide, generated from sarcosine and paraformaldehyde, to quinolyl alpha,beta-unsaturated esters, followed by oxidation of the pyrrolidinyl moiety to pyrrole with activated MnO2 .
RESUME.
Une série de nouveaux composés quinoléiniques de cétones α,βinsaturées a été préparée par condensation de 3-
formyl-2-chloroquinoléines substituées avec différents dérivés de l'acétophénone. Les rendements sont satisfaisants
et l'identification des produits obtenus a été effectuée par les méthodes spectroscopiques usuelles. Une évaluation b...
