Ibrahim S. Yahia

We aim to analyze the influence of 5CBLC content on the structural, optical, and dielectric properties of the PVA-PVP blend polymer. The absence of additional peaks in the XRD patterns after doping strengthens the argument for complete dissociation and homogeneous complexation of 5CBLC molecules within the blend polymer matrix. The dopant atoms are...

Functionalization of cellulose with nanomaterials and functional groups is essential for enhancing its properties for specific applications, such as flexible sensors and printed electronics. This study employs Hartree Fock (HF) and Density Functional Theory (DFT) calculations to investigate the vibrational spectra of cellulose, identifying DFT: B3L...

The present study deals with the combustion synthesis of MgO/Graphene (MG) nanocomposites and investigates their photocatalytic, electrocatalytic, and photo-electrocatalytic properties for efficient redox reactions. Techniques such as FT-IR, XRD, SEM, HR-TEM, EDX, BET, and UV–vis-DRS were used to characterize MG nanocomposites. Both the photocataly...

The pursuit of efficient and sustainable energy storage solutions has fueled significant interest in the development of advanced materials for supercapacitors. Among these, two-dimensional (2D) materials undoubtingly have emerged as promising candidates due to their unique structural and electrochemical properties. To address the inherent challenge...

The core-shell approach was used to synthesize MnO@Fe2O3, while the solution casting method was performed to produce a blend of poly (vinyl alcohol) and poly (vinyl pyrrolidone) (70/30 wt%). Subsequently, MnO@Fe2O3 was employed as nanofillers (nFs) in the blend at 0, 0.06, 0.3, 0.6, 3, and 6 wt% concentrations. Fourier transform infrared spectrosco...

This study investigates the impact of gamma radiation on indium chloride phthalocyanine (lnPcCl) thin films, which were prepared via vacuum thermal evaporation. x-ray diffraction revealed the amorphous structure of the films, with increasing gamma doses causing more noticeable structural disorders. Optical analysis showed a slight decrease in the o...

The auto-combustion method synthesized CuO NPs and Ag/CuO NPs. The Ag/CuO NPs were analyzed using Fourier-transform infrared, X-ray diffraction, scanning electron microscope, and Energy-dispersive X-ray spectroscopy instrumental analyses. The energy band gap, as determined by DRS properties, decreases from 3.82 to 3.50 eV for pure CuO and 10% Ag/Cu...

Addressing the dual challenges of antimicrobial resistance and pharmaceutical contamination in wastewater is crucial for global health and environmental preservation. Predictions estimate up to 10 million annual deaths by 2050 due to antimicrobial resistance, underscoring the urgent need for innovative solutions. This study explores the potential o...

Polyvinyl alcohol (PVA)/Polyethylene glycol (PEG) (90:10 wt%) polymeric nanocomposite films were prepared via a simple casting technique with Rhodamine 110 chloride (Rh-110) dye for optoelectronics with various weight ratio percentages (0, 0.06, 0.1,0.2, 0.4, 0.6 1.25, 2 and 4.0 wt%) of Rh-110 doped PVA/PEG polymeric blend composite films. The prod...

This study focuses on the influence of low-concentration additions of NiCl2 on the overall properties of lead arseborate oxide glasses. In this regard, small amounts, in grams, of NiCl2 were added, separately, to the main constituents of the lead-arseboarte glass, according to the chemical formula [23 wt% B2O3–11 wt.% Na2O–20 wt. CaO–23 wt.% PbO–23...

In this work, new glass systems with composition xV2O5–20CuO–60B2O3–15CaO–(5−x)ZnO which is coded as BCuCa–(5−x)Zn:xV where (0, 1, 2.5 mol.%) were fabricated using the melt-quenching technique with melting temperature 1200 °C to serve as competitive candidates for γ-ray and neutron shielding. XRD and FT-IR were used to characterize the assembled gl...

Plastic garbage has become a severe environmental issue that is gaining traction. For the remediation of this waste, various treatment technologies, such as degrading, recycling, and upcycling, have been developed, and transformation to value-added products has been intensively researched. Thus, the reduced graphene oxide has been produced cheaply...

Cervical cancer is a disease that affects a lot of people all over the world. The success of treatment is significantly increased by early detection. The new surface plasmon resonance sensor (SPRS) described in this article is constructed from layers of silver, BaTiO 3 , and graphene, as well as a coupling prism. The transfer matrix (TM) approach i...

The sol-gel auto-composition approach was used to produce AgxCo0.5−xZn0.5Fe1.95La0.05O4/5% G (x = 0, 0.01, 0.05, 0.1, 0.25, 0.5 (nanocomposites. Some techniques for characterizing the composite structure such as XRD, SEM, EDX, HR-TEM, SAED, FTIR, Raman, and electron mapping are performed. The structure is indexed to be cubic ferrite with space grou...

This study examines the impact of adding copper oxide to glasses of the composition B2O3-Li2O-Na2O-CaO-SrO-As2O3-XCuO, which are referred to as BLNCASCu-X glasses. The weight percentages of copper oxide used are 0, 0.25, 0.75, and 1 wt.%. The BLNCASCu-X glass was analyzed using Fourier transforms infrared (FT-IR), Ramman, and X-ray diffraction (X-R...

In this study, Mn2O3/PVC, a polyvinyl chloride doped with various Mn2O3 nanoparticles, is prepared, and characterized. Solution casting was used to create Mn2O3/PVC polymeric nanocomposite films. The X-ray diffraction method verified that the Mn2O3NPs were effectively disseminated in a PVC matrix with a single-phase structure. According to the Deby...

The combustion method was used to synthesize undoped Ag and Ag-doped CuO nanostructures. The Ag-doped CuO NPs were analyzed using FTIR, XRD, SEM, and EDX instrumental analyses. The energy band gap, as determined by DRS properties, decreases from 3.82 to 3.50 eV for pure CuO and 10 % of Ag/CuO NPs, respectively, with an increase in Ag concentration,...

This study focuses on how the chemical makeup of the glass' basic components affects the glass' structure and optical characteristics. Four glass samples have been created for this purpose using the chemical formula; 94 mol% Na2B4O7—(6-x) mol% CeO2 – x mol% Ce(NO3)3, where 0 ≤ x ≤ 6. The Ce cations in this formula have two separate chemical sources...

Pure and SnS:Tb thin films at varying (1, 2, 3, 4, 5 wt%) Tb concentrations were synthesized using the nebulizer spray pyrolysis (NSP) technique at ambient temperature. The orthorhombic SnS phase was verified using the XRD studies. The incorporation of 2% Tb dopants indicates that the crystallite size was increased to 44 nm. The results of the AFM...

This study established a new glass system for nuclear radiation shielding based on lithium magnesium borosilicate glass doped with different weights percent of Nano copper oxide and Nano hematite alternatively. The new glass system has the following composition; 60%BO3 + 15%SiO2 + 10%Li2O + 5%MgO + (10-X)Fe2O3 + XCuO where X = 0, 2.5, 5, 7.5 and 10...

This study aimed to examine the radiation attenuation of three perovskite samples, La0.7Sr0.3FeO3 , La0.7Sr0.3MnO3 , and, La0.7Sr0.3CoO3 (LSF, LSM, and LSC) using Monte Carlo (MC) simulation code and Phy-X/PSD (PhyX) software in the energy range of 0.015-15 MeV. Gamma and neutron attenuation parameters [e.g., mass attenuation coefficient (MAC), hal...

Due to the radiation released by commonly used isotopes, many nuclear, medical, and industrial facilities require proper radiation shielding. In this work, distinct copper borate glasses intercalated with varied aluminum and vanadium oxide (Al2O3 and V2O5) content have been synthesized and used against radiation (gamma rays and fast/thermal neutron...

Nanocomposites of polyvinyl alcohol (PVA)/multi-wall carbon nanotube (MWCNT) were prepared using the simple solution cast technique with different contents of MWCNT (0, 0.05, 0.25, 0.5, and 1( wt%. XRD confirmed the semi-crystalline character of PVA structure which is slightly affected by adding MWCNT. At wavelengths between 200 and 2500 nm, optica...

This paper examines composite materials based on polymer blends (PBs) of polyvinyl alcohol (PVA) and polyvinylpyrrolidone (PVP). Hydrothermal synthesis was used to prepare CdS/ZnO core–shell nanostructures. The casting method was used to synthesize PVA-PVP@CZS PB nanostructures. These materials were characterized using a variety of analytical techn...

Cadmium sulfide was prepared by first turning it into a powder, which was then used to evaporate heat to create thin films. Additionally, the spray pyrolysis method was used to produce films of cadmium sulfide. A structural comparison using the crystallize size and lattice parameters. Furthermore for the prepared samples, an analysis of their optic...

Historically, the photocatalytic efficacy of graphitic carbon nitride (g-C3N4) has been constrained by a rapid charge recombination rate and restricted sensitivity to visible light. To overcome these limitations and enhance the performance of g-C3N4, the strategic formation of heterojunctions with semiconductor materials is deemed the optimal appro...

The DGEBA: Diglycidyletherbisphenol A and Liquid Crystal (4′-Pentyl-4-Biphenylcarbonitrile (5CBLC)) have been used to fabricate the so-called DGEBA epoxy dispersed 5CB liquid crystals (DED5CBLC). The XRD study's findings suggest that 5CBLC fillers can be used to change the properties of DGEBA epoxy without significantly changing its structure. Resu...

This qualitative work focuses on a comparison between the roles of a lanthanide oxide CeO2 and a transition metal oxide Cu2O3 when introduced to sodium borate glass. Two glass samples have been prepared using the fast quenching method, where two types of glasses were obtained: (i) copper-free/cerium-rich sodium borate glass, and (ii) cerium-free/co...

This study focuses on the effect of low-concentrated impurities on the general characteristics of oxide glasses. In this regard, three different small amounts of Cu 2 O 3 (0.25g, 0.5g, and 1g) have been introduced as minor impurities to the primary components of the Borovanadate lead-based glass containing Na and Ca cations. The fast quenching appr...

In this work, the multivalent transition metal oxide, Cu2O3, has been added in different content to the primary constituents of the Ca/Na lead Arseborate oxide glass. These required glasses were created using the fast-quenching method using the chemical formula: {50 wt% Na2B4O7.10 H2O–17 wt% CaO–17.5 wt% PbO–17.5 wt% As2O3} − x Cu2O3 where x = 0, 0...

In this work, the Poly (methyl methacrylate) (PMMA) films have been developed for the photodegradation of methylene blue (MB) by incorporating vanadium pentaoxide (V 2 O 5 ) catalysts. The obtained films were characterized by SEM, XRD, UV-Vis, FTIR and Raman spectroscopy. The XRD patterns revealed the amorphous domains of the PMMA polymer, with an...

In the present work, Copper (Cu) doped zinc oxide (ZnO) nanoparticles were prepared using a simple and cost-effective co-precipitation process. The objectives of the proposed work are to identify the cause of Cu dopant on the crystalline structure, morphology, optical characteristics of ZnO nanoparticles for photocatalytic as well as photosensing a...

The urgency of antibiotic resistance has been recognized, necessitating prompt, and focused efforts from the scientific community. Innovative alternatives, such as nanoparticles and photocatalytic agents, have been investigated to confront drug-resistant microbes. As an antimicrobial and photocatalytic agent, zinc oxide (ZnO) has demonstrated consi...

Doped with high-quality neodymium ions, poly(methyl methacrylate) (PMMA) [(PMMA)-x wt% Nd³⁺] by using the traditional solution casting method, polymeric composite films with [x = 0, 0.025, 0.1, 0.25, 1.25, and 2.5 wt%] were formed. The XRD, SEM, UV–Vis–NIR, and electrical characteristics were used to characterize the films. According to XRD researc...

Cole–Cole model for electric–dielectric relaxation has been developed to be applicable in the case of optical dielectric relaxation. Such achievement, in addition to Tauc's relationship, should help in exacting the extracted optical parameters of an optical medium for the purposes of optoelectronic applications. One sample of barium lead sodium bor...

The hydrothermal method was used to prepare manganese oxide (Mn2O3) nanoparticles. Reduced graphene oxide (rGO) powder was sonicated with Mn2O3 forming a homogeneous Mn2O3-rGO nanocomposite. The prepared nanocomposite was characterized by UV–Vis spectroscopy to unravel origin of absorption photons strongly in the visible region that ensues due to c...

This report presents the study on the physical and gas sensing properties of the pure and Ni-doped MoO3 thin film-based gas sensor. Various characterization techniques were employed to analyze the physical properties of the spray pyrolysis synthesized thin film materials. According to the structural XRD investigation, all the prepared thin films ex...

This study used laser-assisted chemical bath synthesis (LACBS) as a simple, catalyst-free hydrothermal approach to synthesize pure and Al-doped ZnO nanostructures. Under the influence of a blue laser, the photocatalytic degradation of methylene blue has been studied (444.5 nm of wavelength and 8000 lx of light intensity). For the first time, LACBS...

Abstract: Pure and Ni-doped (1%, 2%, and 3%) nanostructures were synthesized using a novel laser-assisted chemical bath synthesis (LACBS) technique. For the first time, LACBS was used to create a doping solution utilizing a 7 W blue laser with a 444.4 nm wavelength and a continuous beam. The Ni-doping concentration was varied by changing the amount...

The casting aqueous solution technique was used to prepare Co: ZnO incorporated PVA nanocomposite polymer system films (CZO-PVA NCPSFs) with different wt % CZO nanopowders. Based on the Williamson-Hall equation, the values of crystallite sizes, lattice strains, dislocation densities, and stacking fault energies were found to be in the range of 27.1...

A thin-film (215 nm) of indigo dye has been deposited on a polymer substrate (polyacetate) using thermal evaporation. The structure of the prepared film has been investigated using X-ray diffraction, showing X-ray amorphous or fine nanocrystalline nature. Analysis of the absorption coefficient in the strong absorption regions shows two indirect opt...

In this study, a series of eight non-fused rings-based semiconducting acceptors (AR1-AR8) were computationally developed by making modifications to the parent molecule (PTICO). In this study, a DFT analysis was conducted at an accurately chosen level of theory to gather a comprehensive inventory of the optoelectronic characteristics of AR1-AR8 and...

Polytetrafluoroethylene (PTFE) is one of the most significant fluoropolymers, and one of the most recent initiatives is to increase its performance by using metal oxides (MOs). Consequently, the surface modifications of PTFE with two metal oxides (MOs), SiO2 and ZnO, individually and as a mixture of the two MOs, were modeled using density functiona...

In this study, the performances of highly sensitive Ce-doped Bi2S3 thin film-based photodetectors is discussed. The Bi2S3:Ce thin films were successfully coated by using the nebulizer spray pyrolysis method on glass substrates with varying Ce concentrations of 0%, 2%, 4%, 6%, and 8%. Furthermore, the physical properties such as crystalline size, mo...

In this study, graphene nanopowder was used as an impurity material in lead borovanadate glass that contained fixed amounts of Ca2+ and Na+ cations. The rapid quenching method was adopted to prepare five samples that differ in their graphene content. X-ray diffraction patterns proved the amorphous nature of all prepared samples, where the patterns...