M. KAHOUL Fares

Prof

Directory of teachers

Department

BASE COMMON ST Departement ST

Research Interests

Céramiques, Électrochimie, Adsorption, Photocatalyse, Hydrogène vert

Contact Info

University of M'Sila, Algeria

Email : fares.kahoul@univ-msila.dz

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Recent Publications

2024-12-06

Removal of three red dyes: acid, neutral and base from aqueous by adsorption using activated carbon and natural clay

The comparative study of the adsorption of three red dyes (phenolphthalein, Eosin B and carmine) on activated carbon and natural clay was carried out in a static régime. We used different physico-chemical techniques to know the crystalline structure of the DRX device, to do this a clear idea of the chemical bond by the FTIR analysis and finally to know the maximum absorbance λmax of the dyes it is by the method of analysis UV-Visible. The tree dyes removal percentage increases accordingly, reaching 99% for activated carbon and 98% for natural clay .The Langmuir and Freundlich adsorption models were used for descriptions of the adsorption equilibrium. The data was very well corrected with these models. Monolayer adsorption capacities were equal to 30 mgg-1 at which is in the range 5 - pH -8 in temperatures 25°C and time in rang 2 - hour - 30. Adsorption Measurements show that the adsorption process is very rapid and physical in nature. The results explain that the adsorption process is an exothermic and spontaneous physisorption and that the red color of three red dyes in three media (acid, neutral, base) does not influence the adsorption phenomenon
Citation

M. KAHOUL Fares, (2024-12-06), "Removal of three red dyes: acid, neutral and base from aqueous by adsorption using activated carbon and natural clay", [national] Studies in Education Sciences , Studies in Education Sciences

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2024-10-31

Synthesis and Characterization of Triple‑Metal MnFeMg‑CO3 Layered Double Hydroxide for Enhanced Adsorption and Photocatalytic Degradation of Congo Red

In this study, a triple-metal MnFeMg-CO3 layered double hydroxide (LDH) was synthesized using the co-precipitation method, maintaining a consistent 1:1:1 molar ratio of Mn/Fe/Mg at a constant pH. Both LDH and calcined samples (CLDH) underwent comprehensive characterization using X-ray fluorescence (XRF), scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), and determination of the zero-point charge. The investigation delved into various parameters affecting the adsorption capacity for Congo Red (CR), encompassing pH levels, initial concentrations, and more. Regarding kinetics modeling, the study employed pseudo first-order (PFO), pseudo second-order (PSO), and pseudo nth-order (PNO) models. Notably, the PNO model demonstrated exceptional agreement with the experimental data (R2 > 0.99), achieving a remarkable 97% removal rate within minutes across a broad pH range (5–11). Isotherm modeling involved the application of classical models (Langmuir, Freundlich, Sips, and Fritz), with the Fritz model aptly describing the adsorption process. To delve deeper into the adsorption mechanism, advanced statistical physics models were proposed, including Monolayer with one energy (M1), Monolayer with two energies (M2), and Double layer with one energy (M3). Statistical physics parameters indicated that model 3 closely mirrored experimental outcomes. Additionally, energy calculations from the models suggested a physical interaction between CR molecules and LDHs, with negative Gibbs free energy values confirming the thermodynamic spontaneity of CR adsorption. Furthermore, the photocatalytic performance of MnFeMg-CO3 was evaluated under UV light irradiation at varying pH levels and H2O2 concentrations. Notably, maximum CR removal occurred after 120 min at elevated concentrations, showcasing significant enhancement through the photo-Fenton reaction (C/C0 = 0.59). This comprehensive study aims to provide novel insights into advanced materials capable of dual functionality (adsorption and photocatalysis) for effective water pollutant remediation.
Citation

M. KAHOUL Fares, (2024-10-31), "Synthesis and Characterization of Triple‑Metal MnFeMg‑CO3 Layered Double Hydroxide for Enhanced Adsorption and Photocatalytic Degradation of Congo Red", [national] Chemistry Africa , Springer

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2024-05-29

The effect of methylene blue on water hardness and antibacterial activity and the environment

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Citation

M. KAHOUL Fares, (2024-05-29), "The effect of methylene blue on water hardness and antibacterial activity and the environment", [national] Brazilian Journal of Animal and Environmental Research , Brazilian Journal of Animal and Environmental Research

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2024-01-17

Removal of a food dye on two solid supports by adsorption

Activated carbon and natural clay are extremely promising for the removal of dyes in a water solution. Natural clay and activated carbon were characterized using X-ray diffraction (XRD) and Fouriertransform infrared spectroscopy (FTIR) techniques, and the food dye was characterized by UV-Visible. The effects of various experimental parameters, such as initial carmine concentration, contact time, temperature and pH were studied. The removal of the dye increases with the decrease in the initial concentration of carmine and the contact time of the solution. The percentage of carmine removal increases accordingly, reaching 97% for activated carbon and 67% for natural clay. Langmuir and Freundlich adsorption models were used for the adsorption equilibrium descriptions. The data was very well corrected with these models. Monolayer adsorption capacities were equal to 31 mgg-1 at pH 8.0 and 27°C. Adsorption measurements show that the adsorption process is very fast and physical in nature. Thermodynamic parameters such as enthalpy ∆H°, ∆S° entropy and ∆G° free enthalpy were also evaluated to reveal the nature of adsorption. The results explain that the adsorption process is an exothermic, spontaneous physisorption.
Citation

M. KAHOUL Fares, (2024-01-17), "Removal of a food dye on two solid supports by adsorption", [national] Brazilian Journal of Environmental Sciences , Brazilian Journal of Environmental Sciences

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2023-06-20

Elimination of the Declared Insecticide by Natural and Modified Clay and Montmorillonite Sodium

In this research, we study the comparison of the removal of a domestic insecticide declared as an organic pollutant from the water on the surface of the natural clay (N-C) and Montmorillonite sodium (Mnt-Na), where we reveal general information about adsorbents on organic pollutants, as well as physical and chemical methods for their spectral analyses. In addition, we have a simplified explanation of the adsorption phenomenon and then we study the various factors that affect it, represented by the effect of the initial concentration
of the pollutant solution, the effect of the pH, temperature and the contact time, conductivity effect, turbidity analysis, and dissolved oxygen analysis. And we have achieved the results that benefit us by comparing the effectiveness of Natural clay (N-C) and Montmorillonite sodium ( Mnt-Na) in the elimination of insecticide, in addition to judging the possibility of describing adsorption by the best adsorbent.
Citation

M. KAHOUL Fares, (2023-06-20), "Elimination of the Declared Insecticide by Natural and Modified Clay and Montmorillonite Sodium", [international] Journal of Environmental Treatment Techniques , IIETA

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2023-03-15

Electrical properties of BFN-modified PZT (MPB) ceramics

The solid solution of xBi(Fe1/3Nb2/3)O3–(1-x)Pb(Zr0.50Ti0.50)O3 ceramics near morphotropic phase boundary (MPB) (BFN–PZT, x = 0, 0.0025, 0.005, 0.0075, 0.01) were prepared by conventional solid-state reaction method. The samples added with different Bi2O3, Fe2O3, Nb2O5 contents were compared in terms of the phase structure, microstructure, dielectric properties, and piezoelectric properties. In particular, rhombohedral-tetragonal morphotropic phase boundary was observed in BFN–PZT crystal structure near the composition of x = 0.005. The BFN–PZT ceramics exhibited the following optimal properties at x = 0.005: dielectric constant ϵr of 847, dielectric loss tanδ of 0.034, Curie temperature TC of 390°C, electrical conductivity σ of 0.441 (Mohm.m)−1, piezoelectric charge constant d33 of 416 pC/N, electromechanical coupling factor KP of 0.654, and mechanical quality factor Qm of 426, making it a promising material for use in high-intensity ultrasound applications.
Citation

M. KAHOUL Fares, (2023-03-15), "Electrical properties of BFN-modified PZT (MPB) ceramics", [international] The 1st INTERNATIONAL SEMINAR ON CHEMICAL PROCESS & ENVIRONMENT , Biskra

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2023-03-14

Heterogeneous phase adsorption of carmine, phenolphthalein and eosin dyes on activated carbon and natural clay, experiments, characterization and physical interpretations

No microscopic analysis is possible without dyes, stains or indicators. Indeed, dyes and stains are extraordinarily critical in biology, biochemistry, molecular biology and microbiological research, because they are frequently used to dye or dye certain cellular components, proteins or DNA/RNA to visualize them. In biochemistry and molecular biology, dyes and stains are used to highlight biological tissues and to quantify or qualify the presence of certain chemicals when attached to substrates. In microbiology, dyes and stains are used to make microorganisms visible or differentiate them due to distinct colorings properties
Citation

M. KAHOUL Fares, (2023-03-14), "Heterogeneous phase adsorption of carmine, phenolphthalein and eosin dyes on activated carbon and natural clay, experiments, characterization and physical interpretations", [international] 1st International Seminar on Process Engineering & Environment (ISCPE2023) , Biskra

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2023-01-30

Structural, dielectric and piezoelectric characterization of BFN-modified PZT-based (MPB) ceramics

The solid solution of xBi(Fe1/3Nb2/3)O3–(1-x)Pb(Zr0.50Ti0.50)O3 ceramics near morphotropic phase boundary (MPB) (BFN–PZT, x = 0, 0.0025, 0.005, 0.0075, 0.01) were prepared by conventional solid-state reaction method. The samples added with different Bi2O3, Fe2O3, Nb2O5 contents were compared in terms of the phase structure, microstructure, dielectric properties, and piezoelectric properties. In particular, rhombohedral-tetragonal morphotropic phase boundary was observed in BFN–PZT crystal structure near the composition of x = 0.005. The BFN–PZT ceramics exhibited the following optimal properties at x = 0.005: dielectric constant ϵr of 847, dielectric loss tanδ of 0.034, Curie temperature TC of 390°C, electrical conductivity σ of 0.441 (Mohm.m)−1, piezoelectric charge constant d33 of 416 pC/N, electromechanical coupling factor KP of 0.654, and mechanical quality factor Qm of 426, making it a promising material for use in high-intensity ultrasound applications.
Citation

M. KAHOUL Fares, Benseghir Sabrina, , (2023-01-30), "Structural, dielectric and piezoelectric characterization of BFN-modified PZT-based (MPB) ceramics", [national] Phase Transitions , TAYLOR & FRANCIS LTD

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2023

Heterogeneous phase adsorption of carmine, phenolphthalein and eosin dyes on activated carbon and natural clay, experiment, characterization and physical interpretation

Heterogeneous phase adsorption of carmine, phenolphthalein and eosin dyes on activated carbon and natural clay, experiment, characterization and physical interpretation
Citation

M. KAHOUL Fares, (2023), "Heterogeneous phase adsorption of carmine, phenolphthalein and eosin dyes on activated carbon and natural clay, experiment, characterization and physical interpretation", [national] 1st international seminar on chemical process and environment , Biskra

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2022

PREPARATION, DEVELOPMENT OF PHASES, MICROSTRUCTURES AND ELECTRICAL PROPERTIES OF XCEMENT-( 1-X)PZT CERAMICS

PREPARATION, DEVELOPMENT OF PHASES, MICROSTRUCTURES AND ELECTRICAL PROPERTIES OF XCEMENT-(
1-X)PZT CERAMICS
Citation

M. KAHOUL Fares, (2022), "PREPARATION, DEVELOPMENT OF PHASES, MICROSTRUCTURES AND ELECTRICAL PROPERTIES OF XCEMENT-( 1-X)PZT CERAMICS", [international] THE 1ST INTERNATIONAL CONFERENCE ON RENEWABLE MATERIALS AND ENERGIES ICRME2022 October 26-27, 2022, OUARGLA-ALGERIA , OUARGLA

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ELABORATION AND CHARACTERIZATION OF A YTS-PZT CERAMIC

The solid solution of xBi(Fe1/3Nb2/3)O3–(1-x)Pb(Zr0.50Ti0.50)O3 ceramics near morphotropic phase boundary (MPB) (BFN–PZT, x = 0, 0.0025, 0.005, 0.0075, 0.01) were prepared by conventional solid-state reaction method. The samples added with different Bi2O3, Fe2O3, Nb2O5 contents were compared in terms of the phase structure, microstructure, dielectric properties, and piezoelectric properties. In particular, rhombohedral-tetragonal morphotropic phase boundary was observed in BFN–PZT crystal structure near the composition of x = 0.005. The BFN–PZT ceramics exhibited the following optimal properties at x = 0.005: dielectric constant ϵr of 847, dielectric loss tanδ of 0.034, Curie temperature TC of 390°C, electrical conductivity σ of 0.441 (Mohm.m)−1, piezoelectric charge constant d33 of 416 pC/N, electromechanical coupling factor KP of 0.654, and mechanical quality factor Qm of 426, making it a promising material for use in high-intensity ultrasound applications.
Citation

M. KAHOUL Fares, (2022), "ELABORATION AND CHARACTERIZATION OF A YTS-PZT CERAMIC", [international] st International Conference on Chemical matters and Environment Preservation IC-CMEP’22 March 09-10, 2022, Ouargla – Algeria, , Ouargla

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STRUCTURAL AND PHYSICAL CHARACTERIZATION OF A NEW YTS-PZT CERAMIC

The solid solution of xBi(Fe1/3Nb2/3)O3–(1-x)Pb(Zr0.50Ti0.50)O3 ceramics near morphotropic phase boundary (MPB) (BFN–PZT, x = 0, 0.0025, 0.005, 0.0075, 0.01) were prepared by conventional solid-state reaction method. The samples added with different Bi2O3, Fe2O3, Nb2O5 contents were compared in terms of the phase structure, microstructure, dielectric properties, and piezoelectric properties. In particular, rhombohedral-tetragonal morphotropic phase boundary was observed in BFN–PZT crystal structure near the composition of x = 0.005. The BFN–PZT ceramics exhibited the following optimal properties at x = 0.005: dielectric constant ϵr of 847, dielectric loss tanδ of 0.034, Curie temperature TC of 390°C, electrical conductivity σ of 0.441 (Mohm.m)−1, piezoelectric charge constant d33 of 416 pC/N, electromechanical coupling factor KP of 0.654, and mechanical quality factor Qm of 426, making it a promising material for use in high-intensity ultrasound applications.
Citation

M. KAHOUL Fares, (2022), "STRUCTURAL AND PHYSICAL CHARACTERIZATION OF A NEW YTS-PZT CERAMIC", [international] THE 1ST INTERNATIONAL CONFERENCE ON RENEWABLE MATERIALS AND ENERGIES ICRME2022 October 26-27, 2022, OUARGLA-ALGERIA , Ouargla

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Elaboration et Caractérisation des céramiques piézo-électriques de structure prévoskite:(1-x) Pb(Zr0.52 Ti0.48) O3 – x Y (Ta1/2 Sb1/2)O3 ,effet de dopage.

For half a century, a very important research activity has been dedicated to the study of piezoelectric ceramic compounds PZT, many studies have been conducted to develop these microsystems and understand the phenomena involved.
This research aims to better understand the characteristics of a new ceramic with a prevoskite structure ABO3, substitutions have been made on the A and B sites to improve its physical properties.
The solid solution of structure (1-x) Pb(Zr0.52Ti0.48) O3-xY(Ta1/2Sb1/2)O3 (abbreviated as PZT-YTS, where x=0, 0.01, 0.02, 0.03, 0.04 and 0.05) was obtained after synthesis by conventional solid method, the samples were heat treated at 1100, 1150 and 1180°C, in order to obtain a denser product with better physical quality. The phase structure, microstructure and corresponding electrical properties were studied. X-ray diffraction and Raman analyses show that the tetragonal phase structure was obtained in all ceramics at room temperature. Scanning electron micrographs of the samples show uniform grain distribution and grain growth inhibition with increasing doping content. The results show that the best characteristics were obtained for the ceramic of maximum density where the relative density reaches 97.7% with x = 0.04 as follows : The dielectric permittivity, dissipation factor, electromechanical coupling factor, Young's modulus, mechanical quality factor, piezoelectric charge constant, true density, and piezoelectric voltage constant, respectively are: εr = 714.9, tanδ = 0.03345, KP = 0.635, Y = 10.528×1010 N/m2, Qm = 622.254, d31 = 74.738×10-12 C/N, ρa = 7.67 g/cm3 and g31 = 10.477×10-3 m-V/N.
Citation

M. KAHOUL Fares, (2022), "Elaboration et Caractérisation des céramiques piézo-électriques de structure prévoskite:(1-x) Pb(Zr0.52 Ti0.48) O3 – x Y (Ta1/2 Sb1/2)O3 ,effet de dopage.", [national] Ouargla

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Elaboration, caractérisation et études des propriétés électriques de céramiques dans le système : Pb1 –x Yx/2 Bix/2[(Zr0.53 Ti0.47)0.92 - (Mn1/x Sb2/3)0.08] O3

Ceramics in PYBZT-PMS system with formula Pb1-xYx/2Bix/2[(Zr0.53 Ti0.47)0.92–(Mn1/3 Sb2/3)0.08]O3
(where x=0, 0.00125, 0.0025, 0.00375, 0.005 and 0.00625) were prepared by the conventional solid
state sintering at 1200 °C for 2 h in air. The evolution of microstructure and corresponding
electrical properties of PYBZT-PMS samples were systematically studied.
Phase transition from rhombohedral to tetragonal structure was identified by Raman spectra and
XRD results, and the coexistence of two phases (morphotropic phase boundary MPB) was observed
near the composition range from x=0.0025 to 0.005. X-ray diffraction analysis revealed that a pure
perovskite structure could be maintained for studied compositions. Scanning electron micrographs
of the samples show uniform distribution of grain and grain boundaries. The optimum electrical
properties of PYBZT-PMS such as dielectric constant εr=1119.397, dielectric loss tanδ=0.01535,
Curie temperature Tc=390 °C, bulk density ρ=7.82 g/cm3, electrical conductivity σ=0.709
(Mohm.m)-1, mechanical quality factor Qm=525.232, electromechanical coupling factor KP=0.639,
piezoelectric charge constant d31=68.698x10-12 C/N , piezoelectric voltage constant g31=11.349x10-3
m.V/N and Young modulus Y=11.058 x1010 N/m2 were obtained at x=0.00375.
Citation

M. KAHOUL Fares, (2022), "Elaboration, caractérisation et études des propriétés électriques de céramiques dans le système : Pb1 –x Yx/2 Bix/2[(Zr0.53 Ti0.47)0.92 - (Mn1/x Sb2/3)0.08] O3", [national] Ouargla

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Properties and Characteristic of Perovskite Type Ca1-xSrxMnO3

Ca1-xSrxMnO3 (x = 0, 0.1, 0.2) nanoparticules were synthesized by the coprecipitation
method. The structural analysis reveals the presence of Octahedral
coordination of MnO4. Fourier transform infrared spectroscopy (FTIR) spectra of
MnO4 show the occurrence of O-Mn-O vibrational mode at around 590 cm-1. The
XRD indicates that the samples are Rhombohedral lattice. The differential and
thermo gravimetric analysis, curve obtained from the composition x=0.1,it has
distinct pure phase at 600°C. The study of electrochemical behavior was carried
out by cyclic Voltammetry (CV) and impedance spectroscopy (EIS).Show that the
apparent electrochemical activity improves by increasing the strontium
concentration. This is due to the particle size effect of strontium.
Citation

M. KAHOUL Fares, (2022), "Properties and Characteristic of Perovskite Type Ca1-xSrxMnO3", [national] Journal of New Materials for Electrochemical Systems , Journal of New Materials for Electrochemical Systems

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2021

Effect of Zr/Ti Ratio on Piezoelectric and Dielectric Propertiesof 0.1Pb[Fe1/2Nb1/2]O3-0.9Pb[ZrxTi(1–x)]O30 Ceramics

This study describes the microstructure, crystal structure, dielectric and piezoelectric
behavior of 0.1Pb[Fe1/2Nb1/2]O3-0.9Pb[ZrxTi(1–x)]O3 (x = 0.49-0.55) ceramics synthesized
by solid-state reaction. Compositions were sintered at 1180oC for 120 min. Dense
and uniform microstructure was seen through microstructural analysis. XRD pattern
confirmed the co-existence of tetragonal and rhombohedral perovskite phases in
these compositions where 0.51  x  0.53. Compositions with 0.51  x  0.53 resulted
in the optimum values of properties, viz. dielectric constant (r) of 1150, piezoelectric
coefficient (d31) of 9510–12 C/N, piezoelectric voltage constant (g31) of 7010–3 mV/N
and the coupling factor (kp) value of 0.67. Results indicated that this material
composition could be suitable for power harvesting and sensor applications.
Citation

M. KAHOUL Fares, (2021), "Effect of Zr/Ti Ratio on Piezoelectric and Dielectric Propertiesof 0.1Pb[Fe1/2Nb1/2]O3-0.9Pb[ZrxTi(1–x)]O30 Ceramics", [national] Transactions of the Indian Ceramic Society , Transactions of the Indian Ceramic Society

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Influence of YTS addition on structural and electrical properties of PZT-based ceramics

Perovskite solid solution (1-x)Pb(Zr0.52Ti0.48)O3-xY(Ta1/2Sb1/2)O3 ceramics (abbreviated as PZT-YTS, where x
= 0, 0.01, 0.02, 0.03, 0.04 and 0.05) were synthesized by conventional solid state method. The phase structure,
microstructure and corresponding electrical properties were studied. X-ray diffraction and Raman analyses
show that tetragonal phase structure was obtained in all ceramics at room temperature. Scanning electron
micrographs of the samples show uniform grain distribution and grain growth inhibition with the increase
of doping content. The dielectric permittivity, dissipation factor, electromechanical coupling factor, Young
modulus, mechanical quality factor, piezoelectric charge constant, actual density and piezoelectric voltage
constant, for the ceramics with x = 0.04 were: "r = 714.9, tan  = 0.03345, KP = 0.635, Y = 10.528 × 1010 N/m2,
Qm = 622.254, d31 = 74.738 × 10−12 C/N, a = 7.67 g/cm3 and g31 = 10.477 × 10−3 m·V/N, respectively, which
are optimal in comparison to other studied samples.
Citation

M. KAHOUL Fares, (2021), "Influence of YTS addition on structural and electrical properties of PZT-based ceramics", [national] Processing and Application of Ceramics , Processing and Application of Ceramics

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Phase transition, microstructure and electrical properties of Pb1−xYx/2Bix/2[(Zr0.53 Ti0.47)0.92–(Mn1/3 Sb2/3)0.08]O3 piezoelectric ceramics

Ceramics in PYBZT-PMS system with formula Pb1xYx/2Bix/2[(Zr0.53
Ti0.47)0.92–(Mn1/3 Sb2/3)0.08]O3 (x¼0–0.00625) were prepared by the
conventional solid state sintering. The evolution of microstructure
and corresponding electrical properties of PYBZT-PMS samples were
systematically studied. Phase transition from rhombohedral to tetragonal
structure was identified by Raman spectra and XRD results, and
the coexistence of two phases was observed near the composition
range from x¼0.0025 to 0.005. Scanning electron micrographs of
the samples show uniform distribution of grain and grain boundaries.
The optimum electrical properties of PYBZT-PMS such as er ¼
1119.397, tand¼0.01535, Tc ¼ 390 C, q¼7.82 g/cm3, r¼0.709
(Mohm m)1, Qm ¼ 525.232, and KP ¼ 0.639 were obtained
at x¼0.00375.
Citation

M. KAHOUL Fares, (2021), "Phase transition, microstructure and electrical properties of Pb1−xYx/2Bix/2[(Zr0.53 Ti0.47)0.92–(Mn1/3 Sb2/3)0.08]O3 piezoelectric ceramics", [national] ferroelectrics , Ferroelectrics

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Structural and dielectric properties of (1-x)Pb(Zr0.53Ti0.47)O3-xGdMnO3 ceramics

Ceramics compositions (1-x)Pb(Zr0.53Ti0.47)O3-xGdMnO3 (x= 0, 0.01, 0.02, 0.03, 0.04, and 0.05) were synthesized by solid-state
route and sintered at 1180 °C for 2 h. Structural, microstructural, and dielectric properties of the system were investigated.
X-ray structural analysis of the materials confirmed their formation in a single phase with a tetragonal crystal structure. The PZT
ceramics doped with 0.04 moles of GdMnO3 exhibited denser and finer microstructures, which produced a high relative density
of 7.22 g/cm3 (~98% of the theoretic density). Scanning electron microscopy showed uniform distribution of grain and grain
boundaries. Comparing with the undoped ceramics, the dielectric properties of the GM-doped PZT specimens are significantly
improved. The maximum dielectric constant (εr=475324) and the minimum dielectric loss (6%) were observed for 0.04 moles of
GdMnO3, which indicated that the PZT-GM ceramics are promising to lead to practical applications.
Keywords: PZT, dopants, dielectric properties, ceramic, X-ray diffraction, perovskite.
Citation

M. KAHOUL Fares, (2021), "Structural and dielectric properties of (1-x)Pb(Zr0.53Ti0.47)O3-xGdMnO3 ceramics", [national] Cerâmica , Cerâmica

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Phase structure, microstructure, and dielectric properties of (1–x)Pb(Zr0.50 Ti0.50)O3–xBa(W2/3 Mn1/3)O3 ceramics

Ceramics in (1-x)PZT–xBWM system with formula (1-x)Pb(Zr0.50 Ti0.50)O3–xBa(W2/3 Mn1/3)O3, where x¼0.0025–0.01, were prepared by a normal solid-state method and sintered at 1150 _C. The crystal structure, microstructure and dielectric properties of the ceramics were investigated via X-ray diffraction, scanning electron microscopy
and dielectric spectroscopy. X-ray diffraction results demonstrate that all the samples lie within the morphotropic phase boundary region. A microstructure with mean grains sizes of 1.71–2.11 lm were found and the apparent density of 7.59–7.75 g/cm3. The Curie temperature (Tc) decreases with increasing BWM content. The room temperature dielectric constant shows a decreasing trend while loss improves with BWM doping.
Citation

M. KAHOUL Fares, (2021), "Phase structure, microstructure, and dielectric properties of (1–x)Pb(Zr0.50 Ti0.50)O3–xBa(W2/3 Mn1/3)O3 ceramics", [national] ferroelectrics , Ferroelectrics

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2020

Development an characterization of PZT ceramics with ABO3 perovskite structure, doping effect

PZT ceramics with a perovskite structure of the general formula Pb(ZrTi)O3 are used industrially in new technologies, especially in consumer electronics, due to their excellent dielectric and electromechanical properties. This work aims to synthesize, study the structure and physical characterization of novel PZT ceramic materials with perovskite structure ABO3.
Substitutions are made at sites A and B to develop their physical properties. The structure is (1-
x) Pb(Zr0.52Ti0.48)O3-xY(Ta1/2Sb1/2)O3 solid solution (referred to as PZT-YTS, where x=0,
0.01, 0.02, 0.03, 0.04 and 0.05) after the classical solid-phase synthesis, the samples were sintered at different temperatures (1100, ,1150, 1180) to find products with denser and better
physical quality. Check the phase structure, the corresponding microstructure. X-ray diffraction
and Raman analysis showed that all ceramics retained the tetragonal phase structure at room temperature. Scanning electron micrographs of the samples showed a uniform particle size distribution.
Citation

M. KAHOUL Fares, (2020), "Development an characterization of PZT ceramics with ABO3 perovskite structure, doping effect", [international] First international conference on materials, energy ergy & environment (MEE’2020), , El ouad

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Study of Dielectric and Piezoelectric Properties of (1-x)PZT-xSFN Ceramics Prepared by Conventional Solid State Reaction Method

Modified-PZT ceramics with a formula (1-x)Pb(Zr0.53 Ti0.47)O3-xSr(Fe2/3, Nb1/3)O3 (doped with isovalent: Sr2+, acceptor: Fe3+ and Donor: Nb5+ ions) abbreviated as (1-x)PZT-xSFN binary system with varying x (x= 0.02, 0.04, 0.06, 0.08 and 0.10) located near the morphotropic phase boundary (MPB) were prepared by a traditional process in a solid state. All the samples were sintered at a temperature of 1200°C during 2 h. The phase structure, the dielectric and piezoelectric properties of the system were studied. In-phase analysis used X-ray diffraction (XRD) at room temperature indicated that the structure of phase of sintered PZT-SFN ceramics was formed in single-phase with a crystalline structure tetragonal. Raman spectroscopy confirms the presence of this tetragonal phase. The optimum electrical parameters are obtained at 0.94Pb(Zr0.53Ti0.47)O3-0.06Sr(Fe2/3, Nb1/3)O3 system: kp= 66.10 %, d31= 145 pC/N, Qm= 473, tanδ= 1.11 %, and ɛr= 1009.
Citation

M. KAHOUL Fares, (2020), "Study of Dielectric and Piezoelectric Properties of (1-x)PZT-xSFN Ceramics Prepared by Conventional Solid State Reaction Method", [national] J.Chem.Soc.Pak. , J.Chem.Soc.Pak.

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Structure, dielectric and piezoelectric properties of Pb[(Zr0.45,Ti0.5)(Mn0.5,Sb0.5)0.05]O3 ceramics

This study describes structure, dielectric and piezoelectric properties of Pb[(Zr0.45,Ti0.5)(Mn0.5,Sb0.5)0.05]O3
(PZT-PMS) ceramics prepared by conventional mixed-oxide route and sintered at up to 1180 °C. The pre-
pared ceramics was characterized by X-ray diffraction and scanning electron microscopy. The piezoelectric
constants, dielectric constant, Young’s modulus and electromechanical factors were measured in broad tem-
perature range. The results showed that the PZT-PMS ceramics is composed of tetragonal and rhombohedral
phases and has the average grain size of about 1 μm. The Pb[(Zr0.45,Ti0.5)(Mn0.5,Sb0.5)0.05]O3 ceramics has
excellent dielectric and piezoelectric properties for wide practical applications. Thus, planar coupling factor
of 0.70, poled dielectric constant of 8215, the Curie temperature of 345 °C and dielectric loss of 6% were
attained in the PZT-PMS ceramics sintered at 1180 °C.
Citation

M. KAHOUL Fares, (2020), "Structure, dielectric and piezoelectric properties of Pb[(Zr0.45,Ti0.5)(Mn0.5,Sb0.5)0.05]O3 ceramics", [national] Processing and Application of Ceramics , Processing and Application of Ceramics

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2019

The impact of insecticide for domestic use on drinking water

This work aims, studying the impact of water in the presence of the insecticide domestic use that is classified as an organic micro pollutant, the impact tests were performed in the laboratory on a household insecticide dissolved in water. The aim of the tests is to estimate the micro pollutant impact for a reagent dose. Quantitative and qualitative analysis methods, namely (pH-metry, conductimetry, turbidity; hardness dissolved oxygen, BDO5), and antibacterial activity are used in answer of a polluted water analysis.
Citation

M. KAHOUL Fares, (2019), "The impact of insecticide for domestic use on drinking water", [national] International Journal of Scientific Research &Engineering Technology (IJSET) , Prof. Ille Gebeshuber

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Structural, dielectric and piezoelectric properties of (1-x) Pb (Zr0.52 Ti0.48) O3–x Sm Cr O3 ceramics

This work reported the structural, dielectric, and piezoelectric behavior of (1-x) Pb (Zr0.52 Ti0.48) O3 – x Sm Cr O3 ceramics (abbreviated as PZTSC, where x = 0.005, 0.01, 0.015, 0.02 and 0.025), were prepared by the traditional solid-state reaction method. The phase transition, microstructure, dielectric, piezoelectric properties, and the temperature stability of the ceramics were investigated. X-ray diffraction analysis indicated that as-prepared ceramics were of pure perovskite phase and the possible morphotropic phase boundary (MPB) between the tetragonal and rhombohedral phase compositions were located near the SC content of x ≥ 0.02, confirmed by their corresponding dielectric and piezoelectric properties. All specimens present high relative density above 97%, indicating a wide sintering window for this system. Microstructural investigations of all the samples reveal that SC doping inhibits grain growth. The dielectric and piezoelectric properties show a maximum response at x ≥ 0.02, which corresponds to the morphotropic phase boundary (MPB).
Citation

M. KAHOUL Fares, Michel Aillerie, Ahmed Boutarfaia, , (2019), "Structural, dielectric and piezoelectric properties of (1-x) Pb (Zr0.52 Ti0.48) O3–x Sm Cr O3 ceramics", [international] 3ième congrès international sur les énergies renouvelables et développement Durable (ERDD-2019) , Monastir-Tunisie.

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élimination d’un insecticide domestique par une argile naturelle

Ce travail a pour objectif d’étude l’impact d’un insecticide à usage domestique qui est classé comme un micropolluant organique, en présence de deux argiles qui jouent le rôle des adsorbants. Les essais ont pour but d’estimer l’élimination des micropolluants organiques par une argile brute et une argile modifiée pour une dose de réactif. Des méthodes d’analyses quantitatives et qualitatives à savoir (DRX, FTIR, pH-conductimètre, turbidimétrie, oxygène dissous,).Les résultats obtenus sont illustrées dans des tableaux et des figures indiquent que l’élimination de l’insecticide par les deux argiles a une visée importante sur l’acidité, la turbidité, et l’oxygène dissous.
Citation

M. KAHOUL Fares, (2019), "élimination d’un insecticide domestique par une argile naturelle", [international] Congrès International sur les Energies Renouvelables et le Développement Durable , Tunisie

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Adsorption and photo-Fenton like decomposition of Congo red using layered double hydroxide

In the present work, we were interested in the study of the adsorption of the dye crystal violet (CV), cationic dye on the samples of cypress and carob used in this research come from el eulma and constitute cheap resources , abundant and locally available. The objective of this work is to study the potential use of the mixture (cypress and carob) for the treatment of industrial wastewater loaded with dyes, in a research process applicable to wastewater treatment. The first stage consisted in preparing and determining the physico chemical characteristics of materials. The adsorption performances of the various biosorbents, in their raw state or after having undergone thermal or chemical treatments, have been estimated by the adsorption of crystal violet. The influence of different parameters such as temperature, contact time and the initial concentration was studied. The isoelectric points are also studied. The modeling of the kinetics obeys the Nth order model and the nonlinear Sips model correctly describes the adsorption isotherms for cupcar cal and langmuir for cupcar 0.5M. The values of ΔG°, ΔH° and ΔS° show that the adsorption process studied is spontaneous, endothermic and physical.
Citation

M. KAHOUL Fares, (2019), "Adsorption and photo-Fenton like decomposition of Congo red using layered double hydroxide", [national] Première journée des jeunes chercheurs en génie des procédés (JCGP-2019) , OUARGLA

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Synthesis and characterization of new PZT ceramics

PZT ceramics with a perovskite structure of the general formula Pb(ZrTi)O3 are used industrially in new technologies, especially in consumer electronics, due to their excellent dielectric and electromechanical properties. This work aims to synthesize, study the structure and physical characterization of novel PZT ceramic materials with perovskite structure ABO3.
Substitutions are made at sites A and B to develop their physical properties. The structure is (1-
x) Pb(Zr0.52Ti0.48)O3-xY(Ta1/2Sb1/2)O3 solid solution (referred to as PZT-YTS, where x=0,
0.01, 0.02, 0.03, 0.04 and 0.05) after the classical solid-phase synthesis, the samples were sintered at different temperatures (1100, ,1150, 1180) to find products with denser and better
physical quality. Check the phase structure, the corresponding microstructure. X-ray diffraction
and Raman analysis showed that all ceramics retained the tetragonal phase structure at room temperature. Scanning electron micrographs of the samples showed a uniform particle size distribution.
Citation

M. KAHOUL Fares, (2019), "Synthesis and characterization of new PZT ceramics", [national] Première journée des jeunes chercheurs en génie des procédés (JCGP-2019), , OUARGLA

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2018

Effet d’incorporation du tétrathiafulvalène TTF sur une électrode modifiée par un film de polymère organique

Electrochimie
Citation

M. KAHOUL Fares, (2018), "Effet d’incorporation du tétrathiafulvalène TTF sur une électrode modifiée par un film de polymère organique", [international] The first international Conference on Electrochemical, Science and Technology ICEST 2018 , Sétif 1

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Synthèse et caractérisations d’un matériau de type Ca1-xSrxMnO3

Ca1-xSrxMnO3 (x = 0, 0.1, 0.2) nanoparticules were synthesized by the coprecipitation
method. The structural analysis reveals the presence of Octahedral
coordination of MnO4. Fourier transform infrared spectroscopy (FTIR) spectra of
MnO4 show the occurrence of O-Mn-O vibrational mode at around 590 cm-1. The
XRD indicates that the samples are Rhombohedral lattice. The differential and
thermo gravimetric analysis, curve obtained from the composition x=0.1,it has
distinct pure phase at 600°C. The study of electrochemical behavior was carried
out by cyclic Voltammetry (CV) and impedance spectroscopy (EIS).Show that the
apparent electrochemical activity improves by increasing the strontium
concentration. This is due to the particle size effect of strontium.
Citation

M. KAHOUL Fares, (2018), "Synthèse et caractérisations d’un matériau de type Ca1-xSrxMnO3", [national] Le premier séminaire national de physique et chimie des matériaux, ENSET , Skikda

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Microstructural, dielectric and piezoelectric properties of PZT ceramics with the addition of BaO and SnO2

Ceramics
Citation

M. KAHOUL Fares, (2018), "Microstructural, dielectric and piezoelectric properties of PZT ceramics with the addition of BaO and SnO2", [national] Le premier séminaire national de physique et chimie des matériaux, ENSET-Azzaba , Skikda

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