Article
Materials Science, Multidisciplinary
Mehmet Kilic, Naime Didem Kahya, Banu Sungu Misirlioglu, Oznur Cakir, Zeynep Guven Ozdemir
Summary: Nanocomposites of copper ferrite/copper oxide were prepared using various methods, exhibiting reduced dielectric loss and super-capacitive ability at high frequencies. Additionally, these samples showed superparamagnetic behavior.
Article
Engineering, Electrical & Electronic
Hisham Alnahari, A. H. Al-Hammadi, Annas Al-Sharabi, Adnan Alnehia, Abdel-Basit Al-Odayni
Summary: In this study, the influence of citric acid (CA) concentration on the properties of CuO-Fe2O3-MgO-CuFe2O4 nanocomposites (NCs) was investigated. The NCs were synthesized via auto-combustion method and characterized using various techniques. The results showed that the crystal structure and energy gap of the NCs were affected by the CA concentration. The NCs exhibited adequate antibacterial activity against both Gram-negative and Gram-positive bacteria, with higher activity against Gram-positive bacteria and increased activity with higher CA concentration.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Materials Science, Multidisciplinary
Elena Glazkova, Olga Bakina, Nikolay Rodkevich, Andrey Mosunov, Maxim Evstigneev, Vladislav Evstigneev, Viktor Klimenko, Marat Lerner
Summary: In this study, a composite thin coating was prepared by incorporating CuFe2O4/Cu2O/CuO nanoparticles into a PMMA matrix. The nanoparticles were evenly distributed in the composite coatings, but agglomeration occurred as the powder concentration increased. The thermal stability of the coating was not affected by the introduction of nanoparticles. The inclusion of nanoparticles significantly enhanced the antibacterial activity of the PMMA matrix.
Article
Materials Science, Multidisciplinary
Jimmy Castillo, Michelina Arcuri, Vicmary Vargas, Vincent Piscitelli
Summary: In this study, two methodologies were used to prepare nano compounds derived from a mixture of metal oxides supported in biogenic silica nanoparticles. The composition and optical properties of the samples were characterized, and the effect of metal oxide confinement within the nanoparticle structure was studied.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Chemistry, Multidisciplinary
Mohammad Hossein Sayadi, Najmeh Ahmadpour, Shahin Homaeigohar
Summary: The study developed a new magnetic photocatalytic nanosystem, Ag-CuFe2O4@WO3, with high photodegradation efficiency for GEM and TAM, as well as demonstrated efficient antibacterial activity and stable performance over multiple cycles. The nanocomposite shows promising potential for simultaneous disinfection of wastewater streams and degradation of pharmaceutical contaminants in multi-contaminant water systems.
Article
Engineering, Electrical & Electronic
Mansour Mohamed, Mohamed Jayiz, Abdullah S. Alshammari, A. Sedky, Z. R. Khan
Summary: In this study, the structural, morphological, optical, and photocatalytic properties of different Mn3O4/ZnO, CuO/ZnO, and Fe2O3/ZnO nanocomposites were compared. XRD and SEM analysis confirmed the nanostructure nature of the studied composites. The nanocrystalline ZnO, M3O4, CuO, and Fe2O3 phases with different crystalline structures were observed. The morphology of ZnO-based nanocomposites depended on the metal oxide added. Furthermore, the nanocomposites exhibited different optical properties and the Fe2O3/ZnO nanocomposites showed the highest photocatalytic activity for water purification.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Anatomy & Morphology
Shameem I. B. Banu, Rajesh Raman, Mohamad Hafiz Mamat, P. Komalavalli, B. H. Poornima, S. Divyalakshmi, Sathik S. Basha, Sathya A. Priya, Shamima Hussain
Summary: This article summarizes the strain-mediated electrical and optical properties of novel lead-free xCuFe(2)O(4) (1 - x) KNbO3 (x = 0.2, 0.3, and 0.4) multiferroic nanocomposite through a solid state route. Experimental results show improvements in particle size, absorption characteristics, spectroscopic analysis, bandgap behavior, as well as dielectric, ferroelectric, and magnetoelectric behaviors of the nanocomposite materials.
MICROSCOPY RESEARCH AND TECHNIQUE
(2022)
Article
Engineering, Electrical & Electronic
Wissal Jilani, Amel Jlali, Hajer Guermazi
Summary: In this study, different contents of copper oxide nanofiller were embedded in a DGEBA epoxy matrix to prepare CuO/DGEBA hybrid polymer nanocomposites. The increase in CuO nanoparticles content improved the crystallinity of the samples and resulted in the formation of new absorption bands. Experimental results suggested the potential application of these samples in optoelectronic devices.
OPTICAL AND QUANTUM ELECTRONICS
(2021)
Article
Materials Science, Multidisciplinary
Ruslan Zapukhlyak, Mykola Hodlevsky, Volodymyra Boychuk, Julia Mazurenko, Volodymyr Kotsyubynsky, Liliia Turovska, Bogdan Rachiy, Sofia Fedorchenko
Summary: This paper presents a comparative analysis of the structural and magnetic modifications in ultrafine CuFe2O4 and CuFe2O4/rGO nanocomposites subjected to annealing. The impacts of the annealing temperature on key characteristics, including the lattice parameter, inversion degree, and crystallite sizes are outlined. Copper ferrite nanoparticles demonstrate temperature stability and the presence of both cubic and tetragonal ferrite phases. The magnetocrystalline anisotropy values of heterogeneous copper ferrite are calculated as a function of the inversion degree. The study also explores the influence of crystallite size and inversion degree on the characteristic time of magnetic moment relaxation in a single domain CuFe2O4 nanoparticle.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
P. Kahali, M. Montazer, M. Kamali Dolatabadi
Summary: This paper introduces a nano-modified polyester fabric with copper ferrite nanoparticles as a composite material and compares it with treated polyester fabrics containing copper and iron oxide nanoparticles. The results show that the copper ferrite treated sample exhibits better performance in photocatalytic, antibacterial, and magnetic activities, with less risk to the environment and human life.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
A. Safartoobi, J. Mazloom, F. E. Ghodsi
Summary: 1D CuFe2O4 nanostructures were successfully synthesized by sol-gel electrospinning technique, and the influence of different templates on their properties was investigated. The results showed that increasing calcination temperature enhanced the spinel phase, and different templates had different effects on the diameter and band gap of the nanofibers, with PVA/CFO-600 degrees C sample having the highest specific capacitance.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Chemistry, Physical
Faiza, Zahida Malik, Abraiz Khattak, Ahmad Aziz Alahmadi, Safi Ullah Butt
Summary: A series of PVA-based composites with well dispersed nano fillers were fabricated and their dielectric, mechanical, and optical properties were compared. The addition of NiO and CuO nano fillers improved the bandgap, permittivity, and toughness of the composites.
Article
Materials Science, Multidisciplinary
P. M. Z. Hasan, Shivratan Saini, A. A. Melaibari, N. S. Leel, Aakansha, Reem Darwesh, A. M. Quraishi, Jasgurpreet Singh, A. E. Kuznetsov, S. Z. Hashmi, Saurabh Dalela, P. A. Alvi
Summary: The research focused on the synthesis and characterization of poly vinyl alcohol (PVA) polymer nanocomposites with a unique combination of graphene oxide (GO) and copper oxide (CuO) nano-fillers. The effects of the weight percentages of the nano-fillers on the structural, optical, surface morphology, and electrical properties of the composites were investigated. The results showed that increasing the weight percentage of the nano-fillers resulted in an increase in the optical band gap and a decrease in the refractive index and Urbach energy. The nanocomposites also exhibited improved capacitance, dielectric constant, and ac conductivity with increasing nanofillers amount. The density functional theory (DFT) analysis suggested potential applications of the synthesized polymer nanocomposites in optoelectronics.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Chemistry, Physical
Yue Pan, Shujiang Geng, Gang Chen, Fuhui Wang
Summary: This study fabricated a CuFe0.8 alloy layer on steel substrates using direct current magnetron sputtering, which was converted to a CuFe2O4/CuO coating after thermal treatment to effectively suppress the out-migration of Cr and outward diffusion of Fe. The pre-oxidation treatment accelerated the formation of the coating and inhibited the diffusion of Cr and Fe, consequently improving the electrical properties and stability of the oxide layer.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Multidisciplinary
Roma Wirecka, Krzysztof Mackosz, Antoni Zywczak, Mateusz Marek Marzec, Szczepan Zapotoczny, Andrzej Bernasik
Summary: In this study, six nanocomposites based on different magnetic nanoparticles and a conducting polymer, poly(3-hexylthiophene-2,5-diyl) (P3HT), were synthesized. The nanoparticles were coated with either squalene and dodecanoic acid or P3HT, and the cores of the nanoparticles were made of nickel ferrite, cobalt ferrite, or magnetite. The average diameters of all synthesized nanoparticles were below 10 nm, with varying magnetic saturation at 300 K. The impact of different magnetic fillers on the conducting properties and the influence of the shell on the final electromagnetic properties of the nanocomposite were explored.
Article
Optics
B. M. A. Makram, Jamal Khaliel, D. A. Rayan, Hany Ayoub, Y. H. Elbashar
Summary: This article introduces a neodymium-doped borate glass used for glass laser medium. By adjusting the ratio of borate oxide and sodium oxide, the best chemical composition can be selected to achieve maximum emission oscillator strength.
JOURNAL OF OPTICS-INDIA
(2023)
Article
Optics
Ola Ahmed Saied El Mohamed, Diaa A. Rayan, Sherif A. Khairy, Yahia H. Elbashar
Summary: This article investigates the chemical composition, structure, and properties of zinc cobalt doped phosphate glasses. The experimental results reveal the presence of P-O-P and P-O-Zn bonds in the glasses, with P2O5 acting as a network former and being incorporated in the network as Po-4 units. The densities and molar volumes of the glasses were also measured.
JOURNAL OF OPTICS-INDIA
(2023)
Article
Chemistry, Physical
Ahmed I. Abdel-Salam, Sayed Y. Attia, Saad G. Mohamed, Fouad I. El-Hosiny, M. A. Sadek, M. M. Rashad
Summary: The purpose of this study is to improve the electrochemical performance of supercapacitors by designing and exploring novel active electrode materials. A hierarchical structure of nickel-cobalt-sulfide nanostructures (NiCo2S4) decorated on electrospun N-doped carbon nanofiber (CNF), called NiCo2S4@CNF, was fabricated using a one-step hydrothermal approach. The NiCo2S4@CNF hierarchical structure exhibited a large surface area and high porosity, serving as ion diffusion channels, resulting in high specific capacitance and specific capacity values. The NiCo2S4@CNF//CNF hybrid supercapacitor demonstrated superior energy density and stability, making it a promising electrode material for supercapacitor applications.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Amal G. Mahdy, Abeer A. Emam, E. A. Mussa, A. Y. Abdel-All, M. M. Rashad, Aya M. Abuelftooh, Saad G. Mohamed
Summary: The nanoscale Li2Mn0.8Ni0.2SiO4/MnO2 composite was successfully synthesized via a two-step method, involving the preparation of MnO2 nanoparticles and the synthesis of Li2Mn0.8Ni0.2SiO4 using an EDTA-assisted sol-gel method. The nanocomposite exhibited an orthorhombic crystal structure with a Pmn2(1) space group and mesoporous properties. The electrode showed excellent electrochemical performance, making it a promising candidate for high-efficiency energy storage electrode materials.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Engineering, Chemical
Hesham A. Hassan, Ali Omar Turky, Ali M. Hassan, Hosni A. G. Ahmed, Mohmed. M. Rashad
Summary: Titanium-substituted lanthanum strontium manganite (LSMO) nanoparticles with titanium ratios of 0.1, 0.2, 0.3, 0.4, and 0.5 were prepared using an organic acid precursor pathway. The insertion of titanium led to an increase in crystallite size, change in optical properties, and an increase in band gap energy. The refractive index, however, slightly decreased with increased titanium concentration.
PARTICULATE SCIENCE AND TECHNOLOGY
(2023)
Article
Environmental Sciences
Sabah M. Abdelbasir, Diaa A. Rayan, Mahmoud M. Ismail
Summary: This study investigated the recovery of copper and copper oxide as nanosized particles from waste printed circuit boards (WPCBs) using a hydrometallurgical process combining ammonia/ammonium chloride leaching and reduction with L-ascorbic acid. The results showed that 96.7% of copper could be recovered at a temperature of 35℃ for 2 hours with a concentration of 2 mol/L of ammonium chloride and ammonia. The synthesized particles exhibited spherical and distorted sphere morphology with average particle sizes of 460 nm and 50 nm for Cu and CuO nanoparticles, respectively. The Cu/CuO blend showed notable antibacterial, antifungal, and photocatalytic activities.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Mohamed A. Nawwar, Magdy S. Abo Ghazala, Lobna M. Sharaf El-Deen, Badawi Anis, Abdelhamid El-Shaer, Ahmed Mourtada Elseman, Mohamed M. Rashad, Abd El-hady B. Kashyout
Summary: GeSn compounds have been widely studied in photodetectors due to their detection limit in the NIR and mid-IR region. In this article, p-i-n structures based on GeSn junctions were fabricated and the impact of As and Sn doping on the strain characteristics of GeSn was studied. The direct transitions and tuning of their band energies were investigated, and the barrier height and spectral responsivity were controlled with the incorporation of As. The heterojunctions prepared showed spectral responses in the near UV and NIR regions, making them suitable for UV and NIR photodetection applications.
Article
Chemistry, Multidisciplinary
E. M. Elsayed, Ashraf K. Eessaa, M. M. Rashad, S. M. Abdelbasir, A. M. El-Shamy
Summary: Nanocrystalline zinc oxide (ZnO) films were electrodeposited onto indium doped tin oxide (ITO) substrates using aqueous solutions of zinc nitrate at temperatures ranging from 25 0C to 75 0C. Linear sweep voltammetry and chronopotentiometry techniques were used to investigate the deposition process and the effects of different factors. Temperature and current were found to have a significant influence on the growth of ZnO films. The nucleation mechanism was found to be instantaneous at potentials between -800 and -1200 mV, and non-instantaneous and gradual at voltages higher than -1400 mV. X-ray analysis confirmed the presence of Zincite phase with a crystallite size of 61 nm, and the films exhibited a smooth and compact surface.
EGYPTIAN JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Hesham A. Hassan, Ali Omar Turky, Ali M. Hassan, Hosni A. Gomaa, Mohmed M. Rashad
Summary: In this study, titanium substituted lanthanum strontium manganite (LSMTO) nanopowders were prepared and their structural, microstructure, magnetic properties, anti-microbial activity, and anti-cancer activity were investigated. The results showed that substitution of Ti4+ ion increased the crystallite size and affected the magnetization-temperature relationship. Furthermore, the LSMTO powders exhibited cytotoxic effects on HepG-2 cells.
EGYPTIAN JOURNAL OF CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Motaz G. Fayed, Saad G. Mohamed, Yosry F. Barakat, E. E. El-Shereafy, M. M. Rashad
Summary: Spinel Li2Co1-xCuxTi3O8 nanopowders were synthesized via a sol-gel auto-combustion scheme and their physical and chemical properties were characterized through various testing methods. The Li2Co0.75Cu0.25Ti3O8 electrode exhibited good reversible charge-discharge capacity and cycling stability in the lithium-ion battery.
BULLETIN OF MATERIALS SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Moustafa A. Shawkey, Ahmed M. Hassan, Mohamed M. Rashad
Summary: The paper compares the effects of different mixtures with ground granulated blast-furnace slag (GGBS) replacement and different sizes of concrete blocks on heat generation and the risk of cracking in mass concrete.
EGYPTIAN JOURNAL OF CHEMISTRY
(2022)
Article
Quantum Science & Technology
Y. H. Elbashar, D. A. Rayan
Summary: In this study, a glass matrix with varying MnO content was prepared using conventional melt quenching technique, and its optical properties were investigated through XRD and optical spectroscopic studies. The results showed that increasing MnO content led to a shift in UV cutoff wavelength and a decrease in optical band gap energy, while the refractive index increased with MnO concentration. Additionally, optical polarizability was found to be correlated to the chemical composition of the glass.
NONLINEAR OPTICS QUANTUM OPTICS-CONCEPTS IN MODERN OPTICS
(2022)
Article
Quantum Science & Technology
Y. H. Elbashar, D. A. Rayan
Summary: A glass matrix with good transparency and superior optical properties prepared using conventional melting technique has potential applications in manufacturing optical supplies such as optical lenses.
NONLINEAR OPTICS QUANTUM OPTICS-CONCEPTS IN MODERN OPTICS
(2022)
Article
Quantum Science & Technology
Y. H. Elbashar, D. A. Rayan
Summary: This study describes the preparation of a glass matrix with a chemical composition of 40P2O5-39ZnO-(21-x)Na2O-xMnO and investigates its physical properties. The results show that increasing the MnO content increases the density and decreases the molar volume of the glass samples. Additionally, the concentration of manganese ions and related field strength increase, while the inter-ionic spacing and polaron radius decrease. Spectroscopic studies reveal that the optical transmission of the glass is enhanced in the visible-near IR spectral range by increasing the MnO content, with a maximum value of 86% at a concentration of 3% MnO. This suggests potential applications of the glass in modulators and lenses in the visible band.
NONLINEAR OPTICS QUANTUM OPTICS-CONCEPTS IN MODERN OPTICS
(2022)
Article
Quantum Science & Technology
Y. H. Elbashar, Shimaa G. ElGabaly, M. R. Shehata, Diaa A. Rayan
Summary: By studying the effect of Co3O4 on the structure and properties of glass, it was found that the density and molar volume of the glass increased with increasing cobalt oxide content. The research results showed that these glass samples can be used as optical bandpass filters with the optical bandgap energy controlled by the doping level.
NONLINEAR OPTICS QUANTUM OPTICS-CONCEPTS IN MODERN OPTICS
(2022)
