A5061789369- Quantum Dots Synthesis And Properties
- Chalcogenide Semiconductor Thin Films
- Advanced Photocatalysis Techniques
- Gas Sensing Nanomaterials and Sensors
- ZnO doping and properties
- Copper-based nanomaterials and applications
- Luminescence Properties of Advanced Materials
- Ga2O3 and related materials
- TiO2 Photocatalysis and Solar Cells
- Pigment Synthesis and Properties
- Ferroelectric and Piezoelectric Materials
- Advanced Nanomaterials in Catalysis
- Radiation Detection and Scintillator Technologies
- Perovskite Materials and Applications
- Magnetic Properties and Synthesis of Ferrites
- Gold and Silver Nanoparticles Synthesis and Applications
- Electronic and Structural Properties of Oxides
- Iron oxide chemistry and applications
- Microwave Dielectric Ceramics Synthesis
- Nanocluster Synthesis and Applications
- X-ray Diffraction in Crystallography
- Transition Metal Oxide Nanomaterials
- Crystal Structures and Properties
- Inorganic Fluorides and Related Compounds
- Glass properties and applications
University of Béjaïa
2019-2024
Laboratoire de Chimie Physique
2009-2018
Centre National de la Recherche Scientifique
2009-2018
3M (United States)
2018
Centre Hospitalier d'Orsay
2018
Laboratoire de Chimie des Polymères Organiques
2014
University Frères Mentouri Constantine 1
2006-2014
Laboratoire de Photophysique et Photochimie Supramoléculaires et Macromoléculaires
2009
École Normale Supérieure Paris-Saclay
2009
Université Paris-Sud
2009
Lead sulfide nanoparticles with diameter in the range of 9−45 nm were synthesized by radiolytic method aqueous solutions containing Pb2+ and thiol. PbS identified HRTEM, SAED, XPS techniques. The irradiation dose plays a crucial role to control size consequently modify their optical properties. These properties studied measuring absorption emission bands for each dose. For doses higher than 2 kGy, exhibit an band within ultraviolet (300−550 nm). This shifts from 360 380 nm. excitation shows...
The radiolytic method is used to synthesize ultrasmall cobalt ferrite nanoparticles, CoFe 2 O 4 , exhibiting superparamagnetic properties.
Abstract In this article, the authors delve into synthesis of Y 2 O 3 :Sm 3+ nanopowders using sol–gel method, employing organic agents such as ethylene glycol (EG) and polyethylene (PEG). This thorough investigation focuses on structural, morphological, photoluminescence characteristics these nanopowders, with particular consideration for their potential applications in field optical devices. X‐ray diffraction patterns indicate that all powders crystallize pure cubic phases ( Ia‐ 3)....
TiO2 prepared by a green aqueous sol–gel peptization process is co-doped with nitrogen and zirconium to improve extend its photoactivity the visible region. Two precursors are used: urea triethylamine; (IV) tert-butoxide added as source of zirconia. The N/Ti molar ratio fixed regardless chosen precursor while quantity zirconia set 0.7, 1.4, 2, or 2.8 mol%. performance physico-chemical properties these materials compared commercial Evonik P25 photocatalyst. For all doped samples,...
The radiolytic preparation of sub-nanometer sized CdS clusters in LTL-type zeolite crystals suspension is reported. growing process the using a γ-ray irradiator (low dose rate) and pulse electron accelerator (high followed by UV–vis spectroscopy. equipped with transient absorption setup allowed real-time capturing formed suspension. Two distinct stages during formation are identified: (i) fast dispersed small oligomers exhibiting well-defined sharp peak, which shifted from 292 to 350 nm...
One-step colloidal synthesis of subnanometer CdS clusters in hydrophobic MFI-type zeolite crystals the presence 3-mercaptopropyl-trimethoxysilane (MPS), cadmium precursor, and tetrapropylammonium hydroxide (TPAOH) is performed. MPS used as bifunctional agent, it hydrolyzes fast, cross-links with silica framework, provides thiol groups to anchor Cd(2+), subsequently forms clusters. The MFI not only function a nanochamber for formation but also prevent further moisture-induced agglomeration...
Ultra-small magnetic Fe3O4 nanoparticles are successfully synthesized in basic solutions by using the radiolytic method of partial reduction FeIII presence poly-acrylate (PA), or coprecipitation and FeII salts PA. The optical, structural, properties were examined UV–Vis absorption spectroscopy, high-resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), SQUID magnetization measurements. HRTEM XRD analysis confirmed formation ultra-small magnetite a spinel structure,...