A5018645674- TiO2 Photocatalysis and Solar Cells
- Advanced Photocatalysis Techniques
- Electrospun Nanofibers in Biomedical Applications
- ZnO doping and properties
- Pigment Synthesis and Properties
- Polymer Nanocomposite Synthesis and Irradiation
- Conducting polymers and applications
- Magnetic Properties and Synthesis of Ferrites
- Advancements in Battery Materials
- Glass properties and applications
- Catalytic Processes in Materials Science
- Bone Tissue Engineering Materials
- Luminescence Properties of Advanced Materials
- Transition Metal Oxide Nanomaterials
- Fiber-reinforced polymer composites
- Gas Sensing Nanomaterials and Sensors
- Multiferroics and related materials
- Graphene research and applications
- Quantum Dots Synthesis And Properties
- Iron oxide chemistry and applications
- Catalysis and Oxidation Reactions
- Advanced Sensor and Energy Harvesting Materials
- Polyoxometalates: Synthesis and Applications
- Dielectric properties of ceramics
- Recycling and utilization of industrial and municipal waste in materials production
Imam Abdulrahman Bin Faisal University
2015-2024
Curtin University
2012-2021
Recently, titanium dioxide (TiO
TiO2 nanofibers were prepared within polyvinylpyrrolidone (PVP) polymer using a combination of sol–gel and electrospinning techniques. Based on Taguchi design experiment (DoE) method, the effects TiO2/PVP nanofibers’ diameter, including titanium isopropoxide (TiP) concentration, flow rate, needle tip-to-collector distance, applied voltage evaluated. The analysis DoE experiments for nanofiber diameters demonstrated that TiP concentration was most significant factor. An optimum to obtain...
In this study, an examination on the spectral, microstructural, and magnetic characteristics of Eu-Nd double-substituted Ba0.5Sr0.5Fe12O19 hexaferrites (Ba0.5Sr0.5NdxEuxFe12-2xO19 (x = 0.00-0.05) HFs) fabricated by ultrasonic-assisted approach has been presented. An UZ SONOPULS HD 2070 ultrasonic homogenizer with frequency 20 kHz power 70 W was used. The chemical bonding, structure morphology products were evaluated Fourier-Transform Infrared (FT-IR) Spectroscopy, XRD (X-ray diffraction),...
The characteristics of the X-ray attenuation in electrospun nano(n)- and micro(m)-Bi2O3/polylactic acid (PLA) nanofibre mats with different Bi2O3 loadings were compared as a function energy using mammography (i.e. tube voltages 22-49 kV) absorption spectroscopy (XAS) (7-20 keV). Results indicate that by n-Bi2O3/PLA is distinctly higher than m-Bi2O3/PLA at all energies investigated. In addition, increasing filler loading (n-Bi2O3 or m-Bi2O3), porosity decreased, thus attenuation, except for...
Graphite nanoplatelets (GNPs) were produced from flake graphite that had been immersed in isopropyl alcohol solution (70%) and converted to powder form an ultrasonic bath (5 h, room temperature). Scanning transmission electron microscopy, X-ray diffractometry, Raman spectroscopy identified 120-nm-thick GNP crystallites 0.5–21 µm plates with different areas shapes. Extensive exfoliation was observed by microscopy abundant multilayer some monolayer GNPs. diffractometry...
Graphene is often referred to as bi-, tri- or few-layered (4 10 layers), despite it being single-layered. Two commercial graphite samples (G and GE) three graphene (G1, G2, G3) were characterized by Raman spectroscopy, scanning electron microscopy, X-ray diffractometry atomic force microscopy. The structural similarities differences between compared with literature information. A mixture of hexagonal (2H) rhombohedral (3R) phases identified in G1, G3, GE diffraction. observed differ from...
Silver nanoparticles (Ag-NPs) can easily cross through the blood-testis barrier and encourage reproductive dysfunction. This study investigated protective effects of yttrium oxide (YO-NPs) on sexual behavior spermatotoxicity induced by Ag-NPs in male mice. Twenty-four mice were separated into four groups injected intraperitoneally once a week as following: group I (Ag-NPs at dose 40 mg/kg), II (YO-NPs III (Ag + YO NPs doses mg/kg, each) IV (control; distilled water). After 35 days...
Erbium nickel-ferrite (NiErxFe2−xO4 where 0.00 ≤ x 0.05) nanofibers were prepared by a sol–gel electrospinning process utilizing polyvinylpyrrolidone (PVP) polymer (MW: 40.000). Nanofibers of as-electrospun with erbium substitution calcinated in air at 700 °C for 6 h. After calcination, microscopy analysis indicated uneven nanofiber surfaces that formed from grains. An increase concentration the structure yielded an lattice parameters and cell volume, but decrease crystallite size. Elemental...
The influence of calcination time on the phase transformation and crystallization kinetics anodized titania nanotube arrays was studied using in-situ isothermal non-isothermal synchrotron radiation diffraction from room temperature to 900 °C. Anatase first crystallized at 400 °C, while rutile 550 Isothermal heating nanotubes by an increase in 400, 450, 500, 550, 600, 650 °C resulted a slight reduction anatase abundance, but abundance because anatase-to-rutile transformation. Avrami equation...
Synchrotron radiation diffraction was conducted in-situ and at high temperature to establish the lattice parameters of pure/undoped, doped, co-doped anatase nanoparticles. The nanoparticles were heated from room 950 °C in sealed quartz capillaries. effect pressure, doping (aluminium or indium), co-doping (indium-chromium silver-chromium) on thermal expansion coefficients nanocrystalline established. in-situ, transmission electron microscopy, Rietveld refinement method used characterise...
Silver nanoparticles (Ag-NPs) have been used in medical, agricultural, and industrial purposes. Furthermore, NPs can cross the blood-brain barrier encourage some effects on spatial learning memory organism. Here, we investigate possible neurotoxicity of Ag-NPs with special emphasis neuroprotective impacts yttrium-oxide (YO-NPs) male mice. Male mice ( <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" id="M1"> <a:mi>n</a:mi> <a:mo>=</a:mo> <a:mn>24</a:mn> </a:math> ) were weekly...
Sol-gel electrospinning process was used to prepare electrospun carbon nanofibers (ECNFs) from polyacrylonitrile and graphite nanoplatelets. The of as-electrospun were calcinated in argon room temperature 500 °C for 1h. Scanning transmission electron microscopy with energy-dispersive X-ray spectroscopy diffractometry (XRD) characterize the synthesized ECNFs. smooth ECNFs a diameter 129 ± 43 nm comprised conical platelets 30-200 µm length. plane-layered contained crystallites along long fiber...
Abstract The phase transformation behavior of TiO 2 sol‐gel synthesized nanopowder heated in a sealed quartz capillary from room temperature to 800°C was studied using in‐situ synchrotron radiation diffraction ( SRD ). Sealing the resulted an increase gas pressure with temperature. pressures inside were calculated Gay‐Lussac's Law, and they reached 0.36 MPa at 800°C. as‐synthesized material entirely amorphous temperature, crystalline anatase first appearing by 200°C (24 wt% absolute), then...