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PEG-assisted synthesis of SnO2 nanoparticles - ScienceDirect

Biography:
M. Kraini received a Phd Degree in Physics in 2016 from the University of Monastir. Currently, he is a membre at the Laboratory of Physics of Materials and Nanomaterials Applied at Environment, Gabes, Tunisia. His main research interests are the synthesis and characterization of nanoparticles and thin films for a variety of applications.

Abstract:
TiO2 nanofibers were synthesized using electrospinning [Jamil et al Ceramics International 38 (2012) 2437–2441]. The nanofibers were polycrystalline and porous in nature having average diameter and length of ~150 nm and 200 µm, respectively. Fig. 1 (a) and (b) shows scanning electron microscope (SEM) and transmission electron microscope (TEM) image of TiO2 nanofibers, respectively. The bandgap of the nanofibers lies in optical range ˃ 3.2eV. Which showed relatively low photocatalytic degradation of toxic textile dyes (Fig. 2). To improve it photocatalytic activity we embedded Mn0.5Co0.5Fe2O4 nanoparticles into TiO2 nanofibers. Which showed improved photocatalytic activity for the degradation of toxic organic compound (Fig. 2). We are now investigating the effect of photocatalytic water splitting for hydrogen evolution. It is expected that these heterostructure nanofibers will show improve photocatalytic activity for hydrogen evolution via water splitting.

Title of Talk: SYNTHESIS OF EUROPIUM DOPED HYDROXYAPATITE NANOPARTICLES FOR CELL LABELING

Size-controlled synthesis of SnO2 nanoparticles by sol …

Title of Talk: Synthesis and manipulation of noble metal nanoparticles inside the glass matrices

Abstract:
The study of semiconductor nanocrystals (NCs) is a very active research field, due to the wide range of applications, related to light-emission and absorption, photodetection, solar cells, light emitting diode or tunable emitters for bio-labeling1. One area is the development of detection techniques with high spatial resolution enabled by the small size of nanomaterials. As a representative example, nanometer probes of temperature can be very useful to obtain an accurate local value of temperature, particularly in catalysis where the activity and selectivity are temperature dependent. The key is to obtain the value of the local temperature inside the solution or inside the solid at the surface of the reactants. Certain catalytic reactions require high temperatures to occur so another challenge is to build a high local temperature probe (> 373 K). In this context, semiconductor NCs are promising objects to provide this precision due to the temperature dependence of their optical properties. We present here the synthesis of different types of NCs (Cd3P22, InP@ZnS3 and CdSe@CdS4), their capacities as nanothermometers for high temperatures (>340 K) and the conditions which have to be fullfilled for accurate measurements. Different parameters such as the wavelength, the intensity, the area and the full width at half maximum of emission were studied as a function of temperature. The studied temperatures ranges from room temperature to 540 K and the comparison between the different NCs is discussed.

Biography:
I have completed my PhD in University of Reims in 2014. My PhD project focused on the evaluation of the efficiency of biocompatible nanoparticles for photodynamic therapy (PDT) and magnetic resonance imaging (MRI) applications. The nanoparticles were loaded with ruthenium complexes for PDT and gadolinium complexes for IRM separately and then together. I join the group of F. Delpech in LPCNO in Toulouse in 2015 as teacher and researcher and I am actually still working with this team as post-doctorant. The team developpes the synthesis of NCs in order to obtain novel optical properties for different applications.

Synthesis and Luminescence Properties of SnO2 Nanoparticles

Title of Talk: Synthesis and characterization of gold nanoparticles supported on two different metal oxides prepared by impregnation with ionic exchange to form ferromagnetic nanostructures.

Title of Talk: Synthesis and manipulation of noble metal nanoparticles inside the glass matrices

Title of Talk: Plant-mediated biosynthesis of silver nanoparticles by leaf extracts of Lasienthra africanum and a study of the influence of kinetic parameters

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Detonation Synthesis of SnO2 Nanoparticles in Gas …


Synthesis and Gas Sensitivity of SnO2 Nanoparticles

Biography:
M. Kraini received a Phd Degree in Physics in 2016 from the University of Monastir. Currently, he is a membre at the Laboratory of Physics of Materials and Nanomaterials Applied at Environment, Gabes, Tunisia. His main research interests are the synthesis and characterization of nanoparticles and thin films for a variety of applications.

Synthesis of ZnO Nanoparticles by Precipitation …

Title of Talk:
Plant-mediated biosynthesis of silver nanoparticles by leaf extracts of Lasienthra africanum and a study of the influence of kinetic parameters

Surfactant mediated synthesis of quantum dots SnO2 nanoparticles

Abstract:
Lasienthra africanum (LA) leaf extract was employed for nano-silver synthesis. The reducing effect of the plant extract was investigated at different times, pH, temperatures and concentrations. The effect of various kinetic parameters was studied using UV–vis spectroscopy. Blue-shifted surface plasmon bands indicating smaller sized nanoparticles were obtained at neutral pH (6.8–7.0), temperature of 65◦C and concentration ratio of 1:10 (leaf extract: AgNO3) with increasing reaction times under the reaction conditions. The kinetics of the reaction followed pseudo-first- and -second-order rate equations, and was thermodynamically favoured at higher time. Spherically shaped nanoparticles were obtained at different reaction conditions.

Preparation and characterization of SnO2 nanoparticles …

Abstract:
In this study, both chemical precipitation and mechanical milling techniques were used to synthesize either Fe nano-particles or mixed Fe, Al, Ti nano-composites using iron rich industry waste such as red mud as precursor. Further heat treatment of chemically and mechanically treated red mud lead to in-situ formation of nano-sized particles or composites. Such metal matrix composites have attracted much attention due to its use as structural materials in automotive and transportation industries because of their low density, high specific modulus, strength, wear and corrosion resistance. The present work used iron and titanium rich fraction of chemically treated iron rich industrial rejects for preparation of value added Fe and Fe-Al-Ti nano-material. The structural transformation behavior from bulk to nano at different temperatures has been assessed by XRD and SEM. SEM results clearly show that chemical precipitation produced Fe nano-crystals that were obtained after using Fe enriched chemically treated red mud residue whereas mixed nano-material were obtained after mechanical milling.

Synthesis and luminescence properties of ..

Biography:
Dr. Catherine Dendrinou-Samara is Professor and Director of Inorganic Chemistry Lab., Faculty of Chemistry, Aristotle Univ. of Thessaloniki, GREECE. She obtained her PhD thesis in 1992 from Aristotle Univ. of Thessaloniki while she was visiting Researcher at Inorganic Chemistry Lab of Freie Universitaet Berlin and The Manchester University, UK. Her research interest are on synthesis and characterization of a variety of inorganic compounds and materials ranging from mononuclear complexes to polynuclear one and farther to nanoscale particles that permits to investigate magnetic properties and biomedical applications. She works on controlled synthesis through wet chemical approach of magnetic spinel ferrite nanoparticles for Imaging Diagnostics (MRI) and Therapeutics (Drug carriers, Hyperthermia); Bioactivity of Cu-based nanoparticles and Bimettallic nanostructures. She has an h-index of 30 for 80 indexed publications, with >2600 citations(Scopus).

The as-prepared SnO 2 nanoparticles ..

Biography:
Ms.T.S. Harshani Perera is a lecturer at the Faculty of Applied Sciences in Sabaragamuwa University of Sri Lanka. After the completion of her BSc degree in Applied Sciences at Sabaragamuwa University of Sri Lanka, she earned her Biomedical Engineering Master degree from the State Key Laboratory of Advanced Technology for Materials Synthesis and Processing of the Wuhan University of Technology, Wuhan, P.R. China. Her dissertation is on Preparation and Surface Modification of Europium Doping Hydroxyapatite Luminescent Nanoparticles for Cell Labeling. Her main area of research is application of rare earth doped bioapatite nanoparticles for cell labeling.

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