Department
Common trunk material sciences
Research Interests
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Recent Publications
Synthesis of low-content Mn-doped ZnO thin films: Characterizations and density functional theory studies
Citation
M. TERCHI Smail, Abdelhalim Zoukel, Ahmad Azmin Mohamad, , (2025-02-01), "Synthesis of low-content Mn-doped ZnO thin films: Characterizations and density functional theory studies", [national] Inorganic Chemistry Communications , Elsevier, Science Direct
valorization of Agricultural Waste: Development of Bio Adsorbents from Date Peels for Wastewater Treatment
Adsorption using bio-adsorbents is a promising method for removing these pollutants. This study focuses on the valorization of date peels, an agricultural waste, by developing activated carbon from these residues. The activated carbon was characterized by zero charge point (pH_pzc) measurements and Fourier transform infrared spectroscopy (FTIR) analysis. A series of experiments was conducted to evaluate he impact of contact time, pH, dosage, and temperature on adsorption capacity and process kinetics. The integration of nanometric materials into the design of these bio-adsorbents could enhance their efficiency and broaden their applications in wastewater treatment. The exploration of these new adsorbents, which are sustainable, economical, and easily accessible, is a priority for researchers seeking innovative solutions in this field.
Citation
M. TERCHI Smail, (2024-10-31), "valorization of Agricultural Waste: Development of Bio Adsorbents from Date Peels for Wastewater Treatment", [international] r'1 INTERNATIONAL CONFERENCE ON TECHNOLOGICAL APPLICATIOl\ OF MA ERIALS (ICTAM'24) , Sétif
Dégradation photocatalytique d’un colorant azoïque (Acide Rouge) par des nanocomposites ZnO/PMMA
Nous présentons ici des nanocomposites ZnO-polymère présentant des performances photocatalytiques et une stabilité élevées. La méthode de coulée en solution a été réalisée afin d'obtenir les nanocomposites ZnO/PMMA (1 à 7 % en masse). Une caractérisation morphologique, structurelle et chimique complète a été réalisée par microscopie électronique à balayage (MEB), diffraction des rayons X (XRD) infrarouge à transformée de Fourier (FTIR) et ATG.
L'efficacité photocatalytique remarquable des nanocomposites a été démontrée par la dégradation du colorant (Acide rouge) (colorant azoïque) en solution aqueuse sous irradiation par lumière UV.
Les différentes variables étudiées comprennent la dose de catalyseur ,le temps de contact , la concentration initiale du colorant et le recyclage de nanocomposite .Ce dernier s'est révélé efficace pour la réutilisation (puisqu'il a conservé son activité photoactive après plusieurs cycles de décoloration AR).
Ainsi, ces résultats démontrent que le nanocomposite ZnO/PMMA proposé est un candidat prometteur pour les applications photocatalytiques et, en particulier, pour un nouveau traitement de l'eau.
Citation
M. TERCHI Smail, (2024-10-30), "Dégradation photocatalytique d’un colorant azoïque (Acide Rouge) par des nanocomposites ZnO/PMMA", [international] The 1st International Conference on Technological Applications of Materials (ICTAM'24) , Sétif
Valorisation des pelures d'amandes en charbon actif pour l'épuration des eaux usées : Caractérisation et étude des capacités adsorbantes
Citation
M. TERCHI Smail, (2024-10-14), "Valorisation des pelures d'amandes en charbon actif pour l'épuration des eaux usées : Caractérisation et étude des capacités adsorbantes", [national] 1er Séminaire National : Eau, Environnement et Energies Renouvelables (SN3ER’2024) , M'sila
Exploitation des propriétés adsorbantes de la vermiculite dans le domaine traitement des eaux
Citation
M. TERCHI Smail, (2024-05-22), "Exploitation des propriétés adsorbantes de la vermiculite dans le domaine traitement des eaux", [national] Journée Doctorale surle TraitementElectrochimiquedes EauxPolluées , M'sila
Adsorption d’un colorant azoïque (Acide Rouge) sur des nanocopmposites (PMMA/Organo-Vermiculites)
Citation
M. TERCHI Smail, (2024-05-06), "Adsorption d’un colorant azoïque (Acide Rouge) sur des nanocopmposites (PMMA/Organo-Vermiculites)", [national] Le 2ème colloque national de chimie (CNC2@2024) , M'sila
Exploitation des propriétés adsorbantes de la vermiculite dans le domaine traitement des eaux
Citation
M. TERCHI Smail, (2024-05-06), "Exploitation des propriétés adsorbantes de la vermiculite dans le domaine traitement des eaux", [national] Le 2ème colloque national de chimie (CNC2@2024) , M'sila
Enhancement of Polystyrene Nanocomposites with THDACl-Modified Montmorillonite via Melt Compounding
hexadecyl ammonium chloride (THDACl) reveal improved dispersion, enhanced
mechanical properties, and increased thermal stability. These advancements have
significant implications for various industries, including automotive, aerospace,
packaging, and electronics, where the nanocomposites can be utilized for lightweight
structural components, flame-resistant coatings, and high-performance packaging
materials. Increasing the interlayer distance (d-spacing) of fractioned sodium
montmorillonite (FMMT-Na) using N,N,N-trimethyl-1-hexadecyl ammonium chloride
(THDACl) is done to improve the compatibility and dispersion of the clay in polymer
matrices. This modification is relevant and beneficial as it enhances the mechanical
properties, barrier performance, and thermal stability of the resulting nanocomposites,
opening up opportunities for various applications in industries such as packaging,
automotive, construction, and electronics. PS nanocomposites were prepared by
incorporating MMT clay using THDACl as a surfactant. The composition ratios included
1-10% weight percentage of MMT with a 1:1 weight ratio of THDACl to MMT. The
melt compounding process involved treating MMT with THDACl, dispersing it in a
solvent, and adding it to melted PS pellets. Characterization techniques, such as XRD,
TEM, SEM, TGA, and mechanical testing, were used to evaluate the nanocomposites.
The results demonstrated improved dispersion, enhanced mechanical properties, and
increased thermal stability. These findings contribute to the optimization of the
nanocomposites for specific applications.
Citation
M. TERCHI Smail, (2024-04-30), "Enhancement of Polystyrene Nanocomposites with THDACl-Modified Montmorillonite via Melt Compounding", [national] Annales de Chimie - Science des Matériaux , IIETA
Synthesize of exfoliated poly‑methylmethacrylate/ organomontmorillonite nanocomposites by in situ polymerization: structural study, thermal properties and application for removal of azo dye pollutant
by in situ polymerization of Methylmethacrylate monomer as a cost-effective adsorbent for ultrahigh removal of azo dye pollutant from aqueous media. The obtained nanocomposites with different organoclay loading (1–7 mass%) were characterized
by XRD, FTIR, DTA, TGA, TEM and SEM. In the XRD results, the observation of small pick shoulders (d001) and almost
no reflection in the X-ray diffractrograms indicated, respectively, the establishment of intercalated/exfoliated structures and
major exfoliation of OMMT clay into polymer. This observation was supported by TEM microscopy. TGA results revealed
improved thermal properties in comparison with the pure polymer. Adsorption parameters such as pH-value, contact time
and initial dye concentration were investigated to assess optimum adsorption activity. The adsorption experiments showed
that the equilibrium time of adsorption was reached very rapidly. According to the kinetic study, the adsorption process followed pseudo-second-order model. The adsorption capacity is unaffected by variation of solution pH. The high maximum
adsorption capacity of PMMA/OMT nanocomposite toward dye was found to be 309.6 mg g−1. Langmuir isotherm was
more suitable model to describe the adsorption of dye than Freundlich and Dubinin–Radushkevich models. Thermodynamic
study showed that the removal of the azo dye from aqueous solution by PMMA/OMT nanocomposite is endothermic nature,
spontaneous and physisorption process. Under three adsorption–desorption cycles, PMMA/OMT nanocomposite had good
re-adsorption effect. Thus, PMMA/OMT nanocomposite can be an efficient and recyclable adsorbent for azo dyes.
Citation
M. TERCHI Smail, (2024-01-13), "Synthesize of exfoliated poly‑methylmethacrylate/ organomontmorillonite nanocomposites by in situ polymerization: structural study, thermal properties and application for removal of azo dye pollutant", [national] journal of thermal analysis and calorimetry , springer
Valorisation d’un déchet agricole (noyaux d’olive) d’une zone de M’Sila dans le domaine traitement des eaux pollués par le Crystal Violet
Citation
M. TERCHI Smail, (2023-12-02), "Valorisation d’un déchet agricole (noyaux d’olive) d’une zone de M’Sila dans le domaine traitement des eaux pollués par le Crystal Violet", [national] الملتقى الوطني الأول للفيزياء وتطبيقاتها/ 02-12-2023 , - المدرسة العليا للأساتذة الفريق المجاهد أحمد قايد صالح – بوسعادة/المسيلة
Coprecipitation synthesis of transition metal (Al, Mn, Cu, Ag) doped zinc oxide nanopowders: characterization, photocatalytic test, and comparison study
The study successfully produced ZnO and ZnO nanoparticles doped with transition metals (TMZO-NPs) using the co-
precipitation method. Various properties of these nanoparticles were examined, including their structure, morphology,
electronic behavior, optical characteristics, vibrations, and photocatalytic abilities. The analysis confirmed that all nanopar-
ticles possessed a hexagonal wurtzite crystalline structure, with particle size being influenced by the presence of transition
metals (Al, Ag, Cu, Mn). The particles exhibited a preference for orientation along the (002) axis. The shift in peak positions
towards higher angles suggested that the TM might replace Zn ions in the ZnO lattice. The surface structure of the nano-
particles displayed a combination of spherical and hexagonal shapes. Further analysis identified important bands related to
the stretching modes of TM-O and Zn–O bonds. The absorption properties and edges were also affected by the presence of
TM. In the degradation study, both pure ZnO and TMZO-NPs were tested for their ability to break down methylene blue
(MB) under UV light exposure for 90 min. Among the nanoparticles, Al-doped ZnO (AlZO-NPs) demonstrated the highest
degradation efficiency, achieving 97.14% removal of MB within the given exposure time. The photocatalytic process fol-
lowed a pseudo-first-order kinetics, indicating a strong correlation. This suggests that AlZO-NPs hold promise as a material
for use in photocatalytic applications
Citation
M. TERCHI Smail, (2023-11-24), "Coprecipitation synthesis of transition metal (Al, Mn, Cu, Ag) doped zinc oxide nanopowders: characterization, photocatalytic test, and comparison study", [national] Journal of the Australian Ceramic Society , springer
Traitement des eaux usées par un systéme hybride photocatalyse/adsorption
*Une bonne élimination des micropolluants organiques (plus de 30%) pour tous les matériaux élaborés et diminution de CE est remarquable qui atteint à 2330 µs/cm pour le charbon actif cette valeur est proche à la CE de l’eau potable, les valeurs de pH sont aussi diminués.
*L’Argile de Maghnia donne un bon rendement d’élimination des micropolluants organiques.
*L’hybridation de charbon actif par ZnO améliore l’adsorption.
*Une amélioration de rendement de traitement de l’eau usée par photocatalyse est observée pour les matériaux hybrides (noyaux d’olive/ZnO) en comparaison avec le traitement par adsorption.
La qualité de l’eau usée après les traitements effectués est convenable avec l’arrêté interministériel du 8 Safar 1433 correspondant au 2 janvier 2012 pour les eaux usées destinées à l’irrigation agricole.
Citation
M. TERCHI Smail, (2023-11-19), "Traitement des eaux usées par un systéme hybride photocatalyse/adsorption", [national] M'Sila
Capture du gaz CO2 des fumées industrielles pour la fabrication de Produits de consommation
Afin de réduire ces phénomènes dangereux pour la planète, nous avons fabriqué un dispositif qui capte le gaz CO2 des émissions d'usine, au moyen d'une éponge fabriquée à partir d'une source végétale et riche en absorbants qui absorbent le gaz CO2 pour être stocké puis exploité dans la production de produits de consommation tels que les engrais, les denrées alimentaires et les cosmétiques. Grâce à cela, nous avons réduit le pourcentage de dioxyde de carbone dans l'atmosphère, réduisant ainsi la pollution atmosphérique et protégeant l'environnement
Citation
M. TERCHI Smail, (2023-09-30), "Capture du gaz CO2 des fumées industrielles pour la fabrication de Produits de consommation", [national] M'Sila
Valorisation des co-produits végétaux (Noyaux de Zizyphus Lotus) pour traitement des eaux pollués par un colorant azoïque
(Zizyphus Lotus) pour éliminer un colorant de textile (Rouge Nylosan) en solution aqueuse.
L’influence des différents paramètres d’adsorption de ce colorant tels que : le temps de
contact, la dose d’adsorbant, le pH de la solution, la salinité et la concentration initiale ont été
étudiés. Le modèle second ordre est le plus appropriée pour modéliser la cinétique
d’adsorption de ce colorant. L’effet de pH montre que le milieu optimal d’adsorption est celle
acide. La dose optimale de sous-produits végétaux est de 2 g/L. La salinité améliore bien
l’adsorption de ce colorant. Les isothermes d’adsorption ont été modélisées par le modèle
Freundlich. La capacité maximale d’adsorption des Zizyphus Lotus est environ 165 mg/g.
Citation
M. TERCHI Smail, (2023-05-13), "Valorisation des co-produits végétaux (Noyaux de Zizyphus Lotus) pour traitement des eaux pollués par un colorant azoïque", [national] 1er Webinaire National sur la Chimie Verte dans la Protection de l’Environnement et le Développement Durable (WCVPEDD 23) , Université Amar Telidji-Laghouat
معوقات استخدام المختبر المدرسي في تدريس مادة الكيمياء
- عدم توفر الأدوات والمواد والأجهزة الكيميائية في المختبر.
- انتهاء صلاحية المواد الكيميائية المستخدمة في إجراء التجارب .
- عدم توفر متطلبات الأمن والسلامة في المختبرات .
- قلة التدريب علي الأجهزة المتوفرة في المختبر المدرسي.
- كثرة عدد الطلاب في المختبر.
Citation
M. TERCHI Smail, Ladjal Naziha, , (2023), "معوقات استخدام المختبر المدرسي في تدريس مادة الكيمياء", [international] L’École entre les défis de l’hétérogénéité et de la pédagogie frontale : quels dispositifs interdisciplinaires mettre en place ? , École Normale Supérieure (ENS) de Bou Saâda
امكانية تطبيق التعليم عن بعد في تدريس مادة الكيمياء-تكوين اساتذة التكنولوجيا والفيزياء
وطبعا هذه الأعمال التجريبية يجريها التلاميذ في المختبر تحت إشراف أستاذ المادة.إذ لا يستطيع التلميذ إجراء التجارب في المختبر لوحده دون حضور الأستاذ. فرغم تعدد قنوات اليوتوب وتنوع المواقع الالكترونية الخاصة علي شبكة الانترنت في الوقت الراهن التي تبث مختلف الدروس التجريبية علي شكل فيديوهات موجهة لتلاميذ الطورين التعليميين إلا أنها غير كافية للفهم والاستيعاب من طرف هذه الفئة فهي لا تعتبر بديل تعليمي عن حضور التلاميذ إلي المؤسسات التربوية مع الأستاذ بحكم أن هذه الدروس التطبيقية لا يتم فهمها واستيعابها بشكل جيد وواضح من قبل التلاميذ إلا حضوريا داخل المختبر بمرافقة أستاذ المادة.
Citation
M. TERCHI Smail, (2022), "امكانية تطبيق التعليم عن بعد في تدريس مادة الكيمياء-تكوين اساتذة التكنولوجيا والفيزياء", [international] اعداد استاذ التربية والتعليم"رؤية في اساليب التكوين وحقائق المبادين , المدرسة العليا للاساتذة بوسعادة
ديداكتيك الكيمياء والتجريب
تبنت الكثير من المناهج العالمية تطبيق أنشطة المخبر في تدريس العلوم بصفة عامة وفي تدريس الكيمياء بصفة خاصة، بحيث لا يكاد يخلوا منهاج لتدريس الكيمياء من التجارب العملية انطلاقا من المرحلة الابتدائية إلى غاية التعليم الجامعي. وفي المنهاج الجزائري للعلوم الفيزيائية في الطورين المتوسط والثانوي، نجد أنه يكرس التجريب كمسعى أساسي لتدريس العلوم، ويحث على أنه ينبغي أن تكون للأعمال المخبرية مكانة مميزة وأن العلوم الفيزيائية علوم تجريبية تنتهج المسعى العلمي الذي يعتمد على الملاحظة والاستدلال والتجربة إلى غاية نشر النتائج فالنشاطات التجريبية في هذه العلوم أساسية تحتاج إلى عناية خاصة .
Citation
M. TERCHI Smail, (2022), "ديداكتيك الكيمياء والتجريب", [international] l'agir professorel: Analyse et recommendations pour un milleur répertoire didactique , جامعة الشادلي بن جديد الطارف
ADSORPTION PERFORMANCE OF ANIONIC TEXTILE DYE (NYLOSAN RED N-2RBL) ONTO RAW, SODIC AND FRACTIONATED SODIC INORGANIC CLAY MATERIAL
modified forms (sodic and fractionated sodic materials) was
evaluated as adsorbent for anionic textile dye (Nylosan Red N-
2RBL). A various characterization using XRD, XRF, AFM,
FTIR, TG, adsorption of methylene blue and pHPCN of the
considered samples was realized. The experimental results show
that, the adsorption was pH dependent with a high adsorption
capacity of NR dye in acidic range. The pseudo-second-order
kinetic model provided the best fit to the experimental data for
the adsorption of dye by clay materials. The equilibrium
adsorption data were analyzed by Langmuir, Freundlich and
Dubinin–Radushkevich isotherm models. The best fit of
experimental data was obtained by the Dubinin–Radushkevich
isotherm model. The maximum adsorption capacity of the raw
clay calculated by the latest isotherm model is 62.05 mg/g. It is
increased in modified forms (170.11 and 201 mg/g for sodic
clay and fractionated sodified clay materials, respectively).
Increasing solution ionic strength (NaCl, KCl, NaNO3, and
Na2SO4) increased significantly the adsorption of dye
Citation
M. TERCHI Smail, Naziha LADJAL, Kkaldoun BACHARI, , (2020), "ADSORPTION PERFORMANCE OF ANIONIC TEXTILE DYE (NYLOSAN RED N-2RBL) ONTO RAW, SODIC AND FRACTIONATED SODIC INORGANIC CLAY MATERIAL", [national] Revue Roumaine de Chimie , ACADEMIA ROMÂNĂ
ORGANIC POLLUTANTS ADSORPTION ONTO GRANULAR ACTIVATED CARBON
synthesis and therefore occurs in releases, phenol is also likely to exist
in water of industrial origin, it oxidizes with difficulty, adsorbs little and
filter weakly. Cyclohexanol is amphoteric (donor and proton acceptor),
it was chosen to make comparisons. In the present work, the granular activated carbon chosen was characterized by different
methods. The kinetic adsorption study, in the liquid phase, was conducted using adsorbed quantity - square root of the contact time to
elucidate the diffusion of these molecules through the liquid film to the superficial sites of the surface of the solid, which allowed us
to understand the influence of some physicochemical properties and the structure of choices molecules on the phenomenon of
elimination of pollutants. The results obtained illustrate the competitiveness and adsorption specificity of the molecules as a function
of the structure, the grouping, the affinity towards the solid and the porosity of the surface of the latter. The results showed that the
molecules chosen are preferentially physisorbed, although some chemisorption can be detected. We have been able to measure the
surface tensions by the method of tearing off the ring in order to reach the surface occupied by each of the molecules at the level of
the surface of the coal. In this study we assume that the external resistance to mass transfer from the liquid to the surface can be
neglected as a control step.
Citation
M. TERCHI Smail, Oualid DILMI, , (2019), "ORGANIC POLLUTANTS ADSORPTION ONTO GRANULAR ACTIVATED CARBON", [national] Revue Roumaine de Chimie , ACADEMIA ROMÂNĂ
Influence of octadecylammonium,N,N-dimethylhexadecylammonium,and 1-hexadecyltrimethylammonium chloride upon the fractionatedmontmorillonite
Citation
M. TERCHI Smail, Naziha ladjal, , (2018), "Influence of octadecylammonium,N,N-dimethylhexadecylammonium,and 1-hexadecyltrimethylammonium chloride upon the fractionatedmontmorillonite", [national] journal of thermal analysis and calorimetry , springer
Removal of manganese (II) by edge site adsorption on raw and milled vermiculites
cations exchanged from the vermiculite (K
+
and Ca
2+
)and theions(NO3
−
an d M n
2+
) adsorbed on the vermic-ulite. The Langmuir-type manganese adsorption isotherm of the raw vermiculite shows a maximum uptake of
28.32 mg·g
− 1
. The adsorption temperature dependence between 25 °C and 45 °C has demonstrated an endo-thermic and spontaneous adsorption. The amount of exchanged Mn
2+
ions in equivalent per gram represents
only 17 % of the total ad sorbed upta ke, of whic h 14 % have been exchan ged agains t Ca
2+
ions and 3% agains t
K
+
i ons . 83 % of the Mn
2+
and NO
3
−
ion s have been co- adsor bed by comp lexat ion at the edge s of the laye rs.
The grinding of the vermiculite has involved a decrease in the grains size from 2 –3mmto100 μm and thus an
increase in the edge layer adsorption site content allowing an increase of 19% of the maximum adsorption uptake
compared to raw vermiculite. The ultrasonic milling of vermiculite in aqueous dispersion at 20 kHz allowed to
decrease the size of the grains further (8μm) and led to increase the maximum uptake by 31%. The sonication
of the vermiculite dispersion in 35% hydrogen peroxide has allowed to obtain a maximum adsorption uptake
of 36.77 mg·g
− 1
(30% of increase compared to raw vermiculite). The linear variation of the Mn
2+
adsorption ca-pacity with respect to the sum of the estimated geometric perimeter of the sonicated particles (assuming square
shaped particles) con fir m s a n a ds or pt io n p ro ce ss a t t he e dg e o f l ay er s .
Citation
M. TERCHI Smail, Brahim Kebabi, Hassina Bougherara, Laurence reinert, Laurent duclaux, , (2017), "Removal of manganese (II) by edge site adsorption on raw and milled vermiculites", [national] Applied clay science , elsevier
Modification of the Thermally Exfoliated Vermiculite by Sonication and Grafting Methods
A suspension of vermiculite-water with 1% of concentration was sonicated at 20 KHz. This led to the decrease in the size of
grains to16 µm after 2 h of treatment. Increasing of sonication time, presence of H2O2, and the increase of the vermiculite
concentration have caused an accentuation of sonication effect, this resulted the decreasing of the size to 10 µm. Moreover,
a 2% fraction of submicron-sized particles was appeared. The pH of the vermiculite suspensions was increased. The
number of the -OH sites was determined by acid-base titration using Gran method. The infrared spectra of the raw and
sonicated vermiculites in H2O or containing H2O2 were very similar. In the presence of H2O2, two bands were observed at
1380 and 1460 cm
-1
. These are due to the presence of carbonates anions formed during sonication in H2O2. XRD spectra
showed that the sonication did not affect the vermiculite structure. The grafting was carried out on sonicated samples during
5 h in H2O. This was realized in two steps. In the first step, we grafted 3-chloropropyltrimethoxysilane instead of the –OH
sites. In the second step, we conducted a nucleophilic substitution of chlorine with methyl-imidazole. We proved by
infrared spectroscopy and Gran method that grafting was real and XRD that this was not an intercalation
Citation
M. TERCHI Smail, Brahim Kebabi, Hassina Bougherara, Boubebekeur Boudine, , (2016), "Modification of the Thermally Exfoliated Vermiculite by Sonication and Grafting Methods", [national] Journal of New Technology and Materials , O.E.B Univ. publish. Co