A5041615761- Luminescence Properties of Advanced Materials
- ZnO doping and properties
- Polymer Nanocomposites and Properties
- Ga2O3 and related materials
- Semiconductor materials and devices
- Silicon Nanostructures and Photoluminescence
- TiO2 Photocatalysis and Solar Cells
- Thin-Film Transistor Technologies
- Advanced Photocatalysis Techniques
- Advanced Nanomaterials in Catalysis
- Glass properties and applications
- Solid State Laser Technologies
- Tribology and Wear Analysis
- Nanoparticles: synthesis and applications
- Polymer Nanocomposite Synthesis and Irradiation
- Catalytic Processes in Materials Science
- Thermal and Kinetic Analysis
- Luminescence and Fluorescent Materials
- Edible Oils Quality and Analysis
- Polymer crystallization and properties
- Material Properties and Applications
- Quantum Dots Synthesis And Properties
- Pigment Synthesis and Properties
- Gas Sensing Nanomaterials and Sensors
- Natural Fiber Reinforced Composites
University of Sfax
2014-2024
Centre National de la Recherche Scientifique
2011-2024
Université Savoie Mont Blanc
2023-2024
Université Grenoble Alpes
2011-2024
Institut polytechnique de Grenoble
2011-2024
Université de Haute-Alsace
2023
Science et Ingénierie des Matériaux et Procédés
2012-2021
Laboratoire des Matériaux et du Génie Physique
2011-2020
Laboratoire de Chimie
2015
École Normale Supérieure - PSL
2011
A new Na
In this paper, nanofillers obtained by Sol–gel method have been incorporated as a filler in polypropylene composite order to improve the thermal, rheological properties and ensuring good interface compatibility of resulting material. Nano-TiO2 were synthesized based on sol–gel process supercritical drying ethanol attempt study thermal stability, structure, morphology nanoparticles powders. The impact nano-TiO2 degree crystallinity, was studied using DSC, TGA rheology technique. results...
Introduction This study investigates the In Vitro antifungal activity of silicon dioxide nanoparticles (SiO 2 NPs) against mycotoxigenic Fusarium brachygibbosum species, a fungus posing significant threat to olive trees in Tunisia. Methods Two different doses SiO NPs (100 and 200 mg kg -1 ) were used evaluate its effect on fungal growth, mycotoxin production, virulence capability tested F. strain. Results Discussion While mycelial growth was not influenced by NPs, notable increase...
Hexagonal wurtzite phased ZnO:Er3+/Yb3+ thin films with various Yb concentrations were deposited on Si(111) substrate by Aerosol Assisted Chemical Vapor Deposition process. Post-annealed at 1000 °C in air atmosphere showed a crystallinity enhancement. Yb3+ (4F7/2 → 4F5/2) nm emission increased the increase of concentration emanating from an Er-Yb energy transfer. The reflectance percentage 12% was achieved [250–1000 nm] range, and refractive index 1.97 obtained for 632 wavelength. These...
Sol–gel processing was used to fabricate undoped and rare-earth (Er, Yb) doped very fine Y2O3 nanoparticles under supercritical drying conditions of ethanol using an autoclave annealed at 500 °C 800 for 2 h. The Er and/or Yb concentration is fixed 5 mol % co-doped nanoparticles. as-synthesized nanopowder characterized by the X-ray diffraction, scanning electron microscopy thermogravimetric analysis (TGA) coupled with differential thermal calorimetry (DTA). effects solvent, heat treatment...
Abstract Erbium‐doped yttrium oxide films are prepared from acetylacetonate (Y(C 5 H 7 O 2 ) 3 and erbium (III) tris(2,2,6,6‐tetramethyl‐3,5‐heptanedionate) (Er(TMHD) under standard conditions by UV‐aerosol‐assisted metal‐organic (AA‐MOCVD), using air with controlled humidity as the carrier gas. The structure deposition rate optimized studying three experimental parameters; substrate temperature, relative (RH) of gas, UV‐assistance. Taking all these parameter effects consideration, maximum...
A ZnO:Er,Yb hexagonal wurtzite phase structured thin film with highly efficient NIR to visible upconversion emissions.
The main objective of this research is to determine the optimal application conditions a newly synthesized multifunctional coating containing Ag-doped TiO2 nanoparticles when used as possible protective agent for sandstone. Firstly, Ag-TiO2 with anatase structure, spherical shape and controllable sizes were prepared using sol–gel method characterized. biocidal activity NPs was studied by comparing its performance pure against two representative Gram-positive Gram-negative bacterial strains,...
This paper describes the systematic preparation of doped and undoped TiO2 with Er and/or Yb nanoparticles by hydrothermal-assisted sol-gel method using supercritical drying ethanol followed calcination steps at 500°C, 800°C 1000°C for 2/h. The structural study these powders XRD reveals that our samples are crystalline a tetragonal structure anatase phase, which is well crystallized 500°C. annealing transformation phase to rutile 1000°C. analysis clearly indicates dopants incorporated into...
The effects of solvent on the suspension stability titanium dioxide (TiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> ) nanoparticle (NP)-doped rare-earth elements (Er and Yb) were evaluated. Pure doped TiO NPs successfully prepared by sol-gel method under supercritical drying conditions ethanol. Doped nanopowders with 5 mol% Er or Yb concentration, co-doped fixed concentration various concentrations 10 mol%. NP suspensions diverse...
In this study, undoped and (Erbium, Ytterbium) co-doped ZnO nanopowders were prepared using the sol-gel method supercritical drying of ethyl alcohol. Doping elaborated with 5 mol% Er (5 Er: ZnO), Yb Er, Yb: 10 ZnO) concentrations. The effects concentration on structural, morphological, photoluminescent, electrical properties investigated. main findings work crystallinization all in a hexagonal Wurtzite structure spheroidal morphology size 60 nm. Hence, doping would affect crystallinity...