El Barkany Soufian

• Professor
• Multidisciplinary Faculty Nador, Med 1st Universty Morocco

The compounds (Ba1-xSrx)2SmTi2Nb3O15 were synthesized via the solid-state method and characterized by X-ray diffraction (XRD) and impedance spectroscopy. The crystal structure is tetragonal, belonging to the P4bm space group. The lattice parameters (a = b, c, and V) decrease with increasing Sr substitution. Both the theoretical and experimental den...

Chitosan is widely recognized as a promising eco-friendly polymer due to its renewability, biocompat-ibility, biodegradability, non-toxicity, and ease of modification, offering numerous opportunities for development. As a cationic polysaccharide, chitosan exhibits distinctive physicochemical and biological properties that are influenced by factors...

Morocco is a country rich in medicinal plants, many of which have been used for centuries in traditional medicine to treat various ailments, including diabetes. Herbal treatment is often used as an alternative to synthetic drugs because they may be more affordable and accessible. Diabetes is a chronic disease characterized by high blood sugar level...

Hydroxyethylcellulose (HEC) is a water-soluble derivative of cellulose, obtained by reacting cellulose with ethylene oxide. This chemical transformation imparts distinctive characteristics to HEC, such as enhanced water solubility, increased viscosity, and optimized stability under various pH and thermal conditions. These properties make HEC an ess...

This study explores the in vitro antioxidant activity of three plants: Pistacia lentiscus, Mentha pulegium, and Tetraclinis articulata. Initially, we quantified the total polyphenol, flavonoid, and flavonol content in each extract. Subsequently, the antioxidant potential was assessed using DPPH radical scavenging, ferric reducing antioxidant power...

This study focuses on the development of eco-friendly biobased adsorbents through a sustainable hydrothermal and freeze-drying synthesis process, utilizing cost-effective bio-sourced materials to minimize energy consumption and waste. The biobased adsorbents were elaborated using hydroxyethyl cellulose-ionic liquids and bentonite clay. The elaborat...

Our research employs a holistic methodology to assess the efficacy of a series of phenolic Schiff bases as corrosion inhibitors for mild steel in a 1 M HCl solution. Through complementary studies, we aim to unravel the corrosion inhibition mechanism by investigating neutral, protonated, and complex forms of inhibitors using advanced computational a...

Solid-state processing was used to synthesize tungsten bronze type (TTB) solid solutions, specifically Sr2Sm(Ti1-xZrx)2Nb3O15 with x values of 0, 0.2, 0.3, and 0.4. The study examined the crystalline structure, optical properties, morphology, and electrical and dielectric characteristics of these compounds. X-ray diffraction revealed a tetragonal s...

Medicinal plants serve as a significant source of bioactive molecules, with their utilization in the medical realm dating back to ancient times through herbal preparations. In Morocco, the utilization of plants remains integral to traditional medicine. Despite numerous studies documenting indigenous knowledge regarding plant use, scant attention ha...

Cannabis sativa subsp. sativa L. is an industrial plant that has gained importance due to its essential oil (EO), which has commercial, medical, and potential cosmetic applications. Despite its significance, the chemical constituents of the C. sativa EO cultivated in Morocco is not well understood. In this context, the current study aimed to define...

Ceramics of (Ba1−xSrx)2SmTi2Nb3O15, denoted as BSxSTN (x = 0, 0.25 and 0.5), were synthesized by the conventional solid-state reactions route. The impact of Sr-substitution in Ba2SmTi2Nb3O15 ceramics on their structural, optical, and dielectric properties are investigated. The Rietveld method was employed to confirm the formation of tetragonal tung...

Our research aims to investigate the impact of halogens on the effectiveness of corrosion inhibitors for mild steel in a 1 M HCl solution, employing a holistic approach. Through complementary studies, we will elucidate the corrosion inhibition mechanism by examining neutral, protonated, and complex forms of inhibitors using advanced computational a...

In this paper, the dispersion encapsulation was investigated as new process to elaborate the principal active (PA) loaded biodegradable plastic coacervates, which designs a model of vector system and drug delivery matrix. The Rosemary Essential Oil (REO) (~ 54%w) was wrapped, as PA-model, in Benzyl cellulose acrylate (BCac, DSBnz ~ 1.4 and DSAcr ~...

In this study, (E)-2-phenyl-N-(thiophen-2-ylmethylene)imidazo[1,2-a]pyrimidin-3-amine (3) is synthesized and detailed spectral characterizations using 1HNMR, 13CNMR, Mass and FT-IR spectroscopy were performed. The optimized geometry was computed using the Density Functional Theory (DFT) method at B3LYP/6-311++G(d,p) basis set. The theoretical FT-IR...

This work focuses on the synthesis and characterization of amphiphilic block copolymers with varying architectures using controlled polymerization via RAFT polymerization. The study explores the production of diverse nano-aggregates, ranging from micelles to complex structures like vesicles, by leveraging the destabilization of micelle formation th...

This study investigated mild steel corrosion inhibition using four Schiff bases in a theoretical framework. The study used statistical analysis to relate the experimental inhibitor's efficacy to theoretical data, revealing the corrosion inhibition process. Density functional theory (DFT) was used to assess the global reactivity of the four inhibito...

Dissolution mechanism of cellulose in a benzyltriethylammonium/urea deep eutectic solvent (DES): DFT-quantum modeling, molecular dynamics and experimental investigation

The effects of Na+ substitution by Y3+ on the structural, microstructural, dielectric and electrical properties of Ba2Na(1-3x)YxNb5O15 compositions with (x= 0, 0.02 and 0.04 ) have been studied in detail. The solid solutions of different compositions were prepared by the solid state reaction route method and characterized by X-Ray Diffraction (XRD)...

Homogeneous esterification of cellulose isolated from Stipa tenacissima plant located in the eastern region of Morocco, using anhydride and acid chloride compounds has been performed in ionic liquids (ILs) prepared in our laboratory as reaction mediums. ILs were chosen as solvents due to their green character and ability to disperse native cellulos...

In this paper, a benzyltriethylammonium/urea DES was investigated as a new green and eco-friendly medium for the progress of organic chemical reactions, particularly the dissolution and the functionalization of cellulose. In this regard, the viscosity-average molecular weight of cellulose (M̄w) during the dissolution/regeneration process was invest...

Background. Medicinal plants have long played an integral role in traditional healing systems and are crucial for meeting primary healthcare needs. This study aimed to investigate the use of medicinal plants in phytotherapy in the Ketama region of Northern Morocco. Methods. Ethnobotanical data and ancestral knowledge regarding plants were collected...

Pistacia lentiscus L. (PL) is a shrub belonging to the Anacardiaceae family, used in traditional medicine to treat various disorders in the Commune of Ajdir from Al Hociema province. The conducted study focused on determination of the polyphenols and flavonoids contents by spectrophotometric and in vitro evaluation of the antioxidant and anti-infla...

Abstract: This work aimed to highlight the biological effects of Globularia alypum L., a medicinal plant widely used in phytotherapy. Globularia alypum L. is a plant used in traditional medicine in Morocco, the crude extracts prepared from the leaves were obtained using maceration in methanol, ethyl acetate, butanol, and water. The content of total...

This work aimed to highlight the biological effects of Globularia alypum L., a medicinal plant widely used in phytotherapy. Globularia alypum L. is a plant used in traditional medicine in Morocco, the crude extracts prepared from the leaves were obtained using maceration in methanol, ethyl acetate, butanol, and water. The content of total polyphen...

In this paper, the “ Dispersive Coacervation (D-Coac) ” was investigated as new process to elaborate new Rosemary Essential Oil (REO) dispersion-loaded biodegradable plastic coacervates. The active principle (REO) is coated using D-Coac as a model process for designing vector systems and drug delivery matrix. The REO (~ 54%w) was wrapped in Benzyl...

The inhibition potential of two new 1D coordination polymers (CP), CuL2(NO3)2 (C1) and ZnL2(BF4)2 (C2), and their cryptate-bis(1H-1,2,4-triazole)-based ligand (L1) against the corrosion of mild steel (MS) in molar hydrochloric acid medium was evaluated by employing the weight loss (WL), potentiodynamic polarization (PDP), and electrochemical impeda...

In the present work, a new series of imidazo[1,2-a]pyrimidine Schiff base derivatives have been obtained using an easy and conventional synthetic route. The synthesized compounds were spectroscopically characterized using 1H, 13C NMR, LC-MS(ESI), and FT-IR techniques. Green metric calculations indicate adherence to several green chemistry principle...

For many industries, corrosion is a serious issue. For this reason, corrosion inhibitors are constantly being researched and developed to be utilized in a broad range of industrial applications. Thus, two phenolic Schiff bases named (E)-4-(1-((4-hydroxy-6-methylpyrimidin-2-yl)imino)ethyl)benzene-1,3-diol (PSB3) and (E)-4-((pyrimidin-2-ylimino)methy...

Ceramics of (Ba1−xSrx)2SmTi2Nb3O15, denoted as BSxSTN (x = 0, 0.25 and 0.5), were synthesized by the conventional solid-state reactions route. The impact of Sr-substitution in Ba2SmTi2Nb3O15 ceramics on their structural, optical, and dielectric properties are investigated. The Rietveld method was employed to confirm the formation of tetragonal tung...

Due to their biodegradability, biocompatibility, non-toxicity, and affordable manufacture from renewable resources, hydroxyethyl cellulose (HEC) and its derivatives have gained growing interest in a variety of sectors. In light of this, HEC and HEC-branched-amide (HECA) were used to develop new polyurethane and polycarbamoyle amide-based microcapsu...

Hydroxyethyl cellulose (HEC) is considered one of the most important hydro-soluble cellulose derivatives, thanks to its biocompatibility and biodegradability profile. In this work, a facile synthesis methodology was developed to graft ionic liquids onto the HEC ester. Firstly, a low Tg (glass transition temperature) glassy brominated hydrophobic es...

This paper presents a systematic study of the substitution effect by lanthanides (Ln3+=Sm3+ and La3+) in the A-site of perovskite Ba(1-x)Ln2x/3(Ti0.99Zr0.01)O3 with a substitution rate equal to 3.4%. All samples were synthesized by the classical solid-state reaction route and characterized by X-ray diffraction and complex impedance spectroscopy tec...

Ceramics (Ca0.9Sr0.1)1-xLa2x/3Cu3Ti4O12 (CSLCTO) with x = 0, 0.025, 0.05 and 0.075 were successfully synthesized by the solid state reaction method. The structure, microstructure and grain size were analyzed by X-ray diffraction (XRD) and scanning electron microscopy (SEM) respectively. The dielectric response of the synthesized ceramics was evalua...

In this paper, a new green pH-sensitive EDTA crosslinked HEC (cellulose-based hydrogel (swelling rate ~ 1005%)) adsorbent was successfully elaborated. The synthesis of HEC-EDTA at the high advanced crosslinking degree (up to 92%), was carried out using DAEDT and DMAP as acyl transfer agent, where the lamellar morphology (2D-microstructure) was high...

Undoped Ba(Zr0.9Ti0.1)O3 and rare-earth-doped (Ba1-x RE2x/3)(Zr0.9Ti0.1)O3 (RE3+ = La3+, Sm3+) perovskite compounds were synthesized by the conventional solid-state reaction route. Both solubility of rare earth in Ba(Zr0.9Ti0.1)O3 and formation of perovskite structure with the Pm3̄m space group were verified by the Rietveld method using X-ray diffr...

Corrosion is among the challenges most industries face. Corrosion inhibitors are developed to fix the issues of corrosion in these industries. For this reason, the corrosion inhibitive properties on mild steel (MS) of two phenolic Schiff bases named (E)-4-(1-((3-hydroxyphenyl)imino)ethyl)benzene-1,3-diol (PSB1) and (E)-4-(1-(pyridin-2 ylimino)ethyl...

Ba4(Nd1-xSmx)28/3(Ti0,95Zr0,05)18O54 ceramics with (x = 0; 0.2; 0.4; 0.8 and 1) were synthesized by solid method at 1250 °C for 10 h. The effects of Nd/Sm ratio on the structure and dielectric behavior were studied by changing the value of x. The study of Ba/RE order with (RE = Nd and Sm) in the solid solution Ba4(Nd1-xSmx)28/3(Ti0,95Zr0,05)18O54 w...

Rare earth metals (REEs) are crucial for modern industries and technological development. Their extraction from non-renewable primary sources has almost reached its threshold due to excessive global demand. An effectual approach for REEs recovery is recycling secondary sources governed by separation materials. In this work, a novel glutenin-based...

The main objective of the present work is to elaborate on a new eco-friendly and efficient adsorbent designated for aquatic micropollutants removal. However, the synthesis of the Ethylenediamine Crosslinked 2D-Cellulose green adsorbent was carried out successfully, by partial grafting of benzyl entities onto hydroxyl groups of HEC, and crosslinking...

In this paper, a new green pH-sensitive cellulose based hydrogel (swelling rate ~ 1005 %) was successfully elaborated. However, the new EDTA crosslinked HEC was investigated as adsorbent materiel, which it showed high removal efficiency (~2000 mg.g ⁻¹ ) to aquatic micropollutants, especially methylene blue as cationic dyes model. The synthesis of H...

In this paper, a new deep eutectic solvent (DES) has been successfully synthesized that is based on benzyltriethylammonium bromide as a hydrogen bond acceptor (HBA) and urea as a hydrogen bond donor (HBD). However, its usability in modifying cellulose derivatives, especially acylating hydroxyethylcellulose (HEC) was investigated. The chemical modif...

In this paper, a new deep eutectic solvent (DES) has been successfully synthesized that is based on benzyltriethylammonium bromide as a hydrogen bond acceptor (HBA) and urea as a hydrogen bond donor (HBD). However, its usability in modifying cellulose derivatives, especially acylating hydroxyethylcellulose (HEC) was investigated. The chemical modif...

Zn-doped tungsten bronze compounds derived from Ba5CaTi2Nb8O30, with Ba5CaTi2-xZnxNb8O30 composition (x=0; 0.04 and 0.08) were synthesized by the conventional solid-state reaction route. Both solubility of Zn in Ba5CaTi2Nb8O30 and tungsten bronze formation with the P4bm space group were verified by the Rietveld method using X-ray diffraction data....

In this study, the removal of Pb(II), Cu(II), Cd(II), and Zn(II) ions from aqueous solutions was investigated using succinic anhydride modified cellulose monoacetate. In the first part, the cellulose acetate was successfully succinylated in a homogenous medium of DMF using 4-dimethylaminopyridine (DMAP) as a catalyst. The obtained material (AcS) wa...

In the present work, we have studied the effect of Gd-substitution on the structural, dielectric and electrical properties of Sr2Sm1−xGdxTi2Nb3O15 (x = 0 and 0.5) tungsten bronze ceramics prepared by a high-temperature solid-state reaction technique. The formation of the phase of tetragonal tungsten bronze was verified by the Rietveld refinement us...

Ba5CaTi2−xZnxNb8O30 ceramics (x = 0, 0.04, and 0.08) were synthesized by a conventional solid-state reaction method at 1300 °C for 6 hours. The effects of the Ti/Zn ratio on structural and dielectric properties were studied by changing the value of x. The pure phase formation of all prepared Ba5CaTi2−xZnxNb8O30 compositions was confirmed by X-ray d...

Ba5CaTi2−xZnxNb8O30 ceramics (x = 0, 0.04, and 0.08) were synthesized by a conventional solid-state reaction method at 1300 °C for 6 hours. The effects of the Ti/Zn ratio on structural and dielectric properties were studied by changing the value of x. The pure phase formation of all prepared Ba5CaTi2−x- ZnxNb8O30 compositions was confirmed by X-ray...

The Al Hoceima region possesses an important floristic diversity especially in terms of medicinal and aromatic plants. The aim of this work was to identify the medicinal and aromatic plants (MAPs) used by the population in order to enhance their value. To identify the MAPs used in the Al Hoceima National Park, ethnobotanical investigation questionn...

The uncontrolled radical grafting of acrylamide on cellulose generates a disorderly size distribution of grafted and ungrafted (as a by-product) PAM chains, which required additional purification steps. At this stage, the anionic grafting appears as a well-controlled grafting method of acrylic entities on the cellulosic backbone, using alkali alkox...

In this work, Zn co-doped tungsten bronze having nominal formula Ba5CaTi1.94Zn0.06Nb8O30 has been synthesized and systematically studied for structure, dielectric and electrical properties. The formation of the phase of tetragonal tungsten bronze with space group P4bm and the occurrence of oxygen vacancies were verified by the Rietveld refinement u...

The present investigation deals with the elaboration in homogenous conditions of new cross-linked, hydroxyl cellulose (HEC) based material. Further, its application as a new eco-friendly low-cost efficient adsorbent of hazardous metal ions from an aquatic environment is treated. In this respect, the functionalization of HEC has been carried out usi...

Sustainable, biodegradable and thermoplastic processable aliphatic polyesters (polybutylene succinate (PBS) and polyethylene succinate (PES)) were prepared and characterized; then, they were grafted onto cellulose micro-fibers using a simple click reaction. This modification was conducted under simple experimental conditions. The characterization (...

The present investigation deals with the elaboration in homogenous conditions of new cross-linked, hydroxyl cellulose (HEC) based material. Further, its application as a new eco-friendly low-cost efficient adsorbent of hazardous metal ions from an aquatic environment is treated. In this respect, the functionalization of HEC has been carried out usi...

In this study, tungsten-bronze type materials of Sr 2 Sm (1-x) Nd x Ti 2 Nb 3 O 15 composition (x=0; 0,25; 0,5; 0,75 and 1) were elaborated by classical solid-state reaction. The structural characterization demonstrate that these compounds present tetragonal symmetry, using two space groups P4bm (N°100) and P4/mbm (N°127) respectively. The lattice...

Ba5CaTi2−xZnxNb8O30 ceramics (x = 0, 0.04, and 0.08) were synthesized by a conventional solid-state reaction method at 1300 °C for 6 hours. The effects of the Ti/Zn ratio on structural and dielectric properties were studied by changing the value of x. The pure phase formation of all prepared Ba5CaTi2−x- ZnxNb8O30 compositions was confirmed by X-ray...

In this study, the removal of Pb(II), Cu(II), Cd(II), and Zn(II) ions from aqueous solutions was investigated using succinic anhydride modified cellulose acetate. In firs part, cellulose acetate was successfully succinylated in homogenous medium of DMF using 4-dimethylaminopyridine (DMAP) as a catalyst and the obtained material (ACM) was analyzed b...

Novel biodegradable cellulose derivatives were synthesized using ‘grafting onto’ process. The synthesis method involves three-steps using 1, 6-hexamethylene diisocyanate as a coupling agent. This method improves the adhesion with cellulose fibers and was conducted using simple experimental techniques. In the first stage, the poly(butylene adipate)...

The purpose of the current study was to investigate total phenolic (TPC), total flavonoids (TF) and flavonols (FV) contents, as well as antioxidant and antimicrobial activities of different extracts of Pistacia lentiscus leaves. Total phenolic compounds were quantified by Folin-Ciocalteu, while antioxidant properties were evaluated using 2,2-diphen...

The present work consists; firstly, to describe the preparation and characterization of new cellulose based chelating materials in homogeneous conditions. On the other hand, the study of the extraction of heavy metals by the new elaborated chelating materials was realized. The cellulose acetate (Ac) with degree of substitution of 1.16 prepared in p...

A new ecofriendly low-cost flocculant

coagulant-flocculant of colloidal systems Fe(OH)3 and to remove of heavy metal ions (Cu(II)) from aqueousmedia. HECc was synthesized in unconventional reverse microemulsion process using water as ecofriendlysolvent and as hydrogen transfer agent, where cyclohexane was employed as continuous phase to reduce thehydrophobicity of the medium. The amide...

New water-soluble cellulosic derivative based on HEC was successfully elaborated (HECc), and used as anionic coagulant-flocculant of colloidal systems Fe(OH)3 and to remove of heavy metal ions (Cu(II)) from aqueous media. HECc was synthesized in unconventional reverse microemulsion process using water as ecofriendly solvent and as hydrogen transfer...

valorisation off cellulose

The partial hydrophobization of hydroxyl ethyl cellulose (HEC), by incorporating benzyl entities, was successfully performed. So, cavities with binding sites enable to encapsulate the copper ion (Cu(II)) by coordination interaction result from. The resulting product (BEC, DS ≈ 1) thus contained two types of chelating sites: 2,2′-oxydiethanol and 2,...

Generally, grafting alkylated chains onto cellulose backbone modifies its physicochemical properties strongly, and the variation in the hydrophobicity of the cellulose causes significant modifications of these superficial characteristics. In this sense, this study highlighted the effect of the hydrophobicity-hydrophilic balance brought by the level...

Valorisation of modified cellulose

Dans les filières classiques de traitement des eaux potables, la coagulation-floculation peut réduire de façon notable les polluants organiques, d’où elle apparaît de plus en plus comme non seulement un procédé de clarification, mais également comme un procédé d'élimination spécifique des micropolluants capable, dans une certaine mesure, de rivalis...

In this paper, new quaternized cellulose derivative based on Ethylenediaminetetraacetic acid (EDTA) and hydroxyethyl cellulose (HEC) is successfully prepared in homogeneous medium. The resulted product is characterized using spectroscopy techniques (FTIR, 1H NMR and 13C NMR). At the supramolecular level, the x-ray patterns show that a high hydrogen...

In the last few years, science and technology have made remarkable discoveries in the field of bio-renewable materials. In this context, polysaccharide based biopolymers present themselves as a high potential source of innovation. Due to its availability and biodegradability, Cellulose, the polymer belonging to the polysaccharide family, has a grea...

In this paper, we exploited the strong relation between the degree of substitution (DS) of the cellulosic derivatives and their physicochemical behavior, in particular the solubility. Thus, it is smart to change the problem of finding new and complex solvent system by an understanding the effect of cellulose acetate DS on the solubility process and...

Cellulosic fibers, a renewable raw material, can be successfully modified with functionalized compounds yielding hydrophilic or hydrophobic and biodegradable substrates. Thus, the judicious choice of the polar/nonpolar balance, as well as, the length of the macromolecular segments of the coupling agent gave rise to a variety of interesting modified...

View the growing success of natural products as an alternative to synthetic chemicals. The purpose of this study was to contribute to the valorization of leaves of Mentha pulegium by determining the chemical composition of its essential oil and evaluate in vitro the antioxidant and the anticorrosive activities of its aqueous extract and essential o...

Cellulosic fibers, a renewable raw material, can be successfully modified with functionalized compounds yielding hydrophilic or hydrophobic and biodegradable substrates. Thus, the judicious choice of the polar/nonpolar balance, as well as, the length of the macromolecular segments of the coupling agent gave rise to a variety of interesting modified...

This article reports a study on the structural characterization and evaluation of thermal degradation kinetics of urea–formaldehyde resin modified with cellulose, known as UFC resin. Structural characterization of UFC undertaken by scanning electron microscopy, Fourier transform infrared and X-ray diffraction analyses reveals that the resin is fair...