A5077101237- Advanced Photocatalysis Techniques
- Quantum Dots Synthesis And Properties
- TiO2 Photocatalysis and Solar Cells
- Catalytic Processes in Materials Science
- Iron oxide chemistry and applications
- Magnetic Properties and Synthesis of Ferrites
- Mesoporous Materials and Catalysis
- Gas Sensing Nanomaterials and Sensors
- Advanced biosensing and bioanalysis techniques
- ZnO doping and properties
- Electrocatalysts for Energy Conversion
- Luminescence Properties of Advanced Materials
- Electrochemical sensors and biosensors
- Characterization and Applications of Magnetic Nanoparticles
- Nanomaterials for catalytic reactions
- Carbon Dioxide Capture Technologies
- Magnetic properties of thin films
- Electrochemical Analysis and Applications
- Metal-Organic Frameworks: Synthesis and Applications
- Photonic Crystals and Applications
- Chalcogenide Semiconductor Thin Films
- Pigment Synthesis and Properties
- Analytical Chemistry and Sensors
- Innovative Microfluidic and Catalytic Techniques Innovation
- Advanced battery technologies research
University of Tabriz
2018-2024
Faculty (United Kingdom)
2020
University of Duisburg-Essen
2010-2018
Brown University
2014-2016
Vanderbilt University
2013-2014
University of Freiburg
2005-2010
Ruhr University Bochum
2010
University of East Anglia
2007
University of New Orleans
2006
A new method for the preparation of single quantum dots (QDs) in silica spheres has been developed. The work involves an oil-in-water microemulsion system with cyclohexane as "oil" phase and Synperonic NP-5 surfactant. Reaction parameters such reactant concentrations, time, temperature were studied. resulted smooth nanoparticles good monodispersity high luminescence QDs center. Elucidating coating mechanism was attempted. Possible mechanisms include a transfer by ligand exchange...
Any labeling with multicolor markers can be affected by the autofluorescence of biological tissue due to UV or blue light excitation sources, results are fluorescence resonance energy transfer. In this work, we present novel IR-to-vis upconverting nanoparticles different rare earth metal dopants. With a single source 980 nm, four colors nanocrystals spectrally separated under multiplexing conditions. The particles were phase transferred into polar solvents means silica encapsulation and...
Abstract Uniformly sized and crystalline iron oxide nanoparticles (IONPs) with spinel structure mean diameters of about 3, 6 9 nm were synthesized in high yield using the microemulsion route at room temperature. The (NPs) stabilized situ by organic surfactant molecules which acted both as a stabilizer system capping layer NP surface. size control was attained careful adjustment preparation conditions. structure, morphology distribution investigated x-ray diffraction, transmission electron...
Sophisticated functional nanostructures could be building blocks for potential future applications. We have prepared hollow silica nanospheres from luminescent semiconductor/silica core/shell nanoparticles. Different synthesis strategies enable various applications of these particles, whereas the progression reaction can monitored by luminescence (and vanishing luminescence) Furthermore, we succeeded in preparing extremely small and monodisperse
In this work, we have synthesized two different phases of CdS nanoparticles, CdS/TiO2 composites and their supported form on ZSM-5 type metalosilicates (ferrisilicate aluminosilicate) as CdS–TiO2/metalosilicate composites. The photocatalytic performance these samples was evaluated by monitoring the amount hydrogen evolved from water under visible-light irradiation. TiO2–CdS/metalosilicate exhibited a higher activity in splitting than that irradiation, suggesting an important role support....
Spherical PbSe@SiO2 nanoparticles have been successfully synthesized within reverse micelles via metal alkoxide hydrolysis and condensation a microemulsion system. These core−shell were characterized by transmission electron microscopy (TEM), NIR absorption spectroscopy, energy-dispersive X-ray analysis, TEM diffractions. It shows that the obtained structures spherical shape with narrow size distribution (average approximately 35 nm) smooth surfaces. The of particles thickness shells can be...
Six nanometer sized iron-oxide nanoparticles capped with an organic surfactant and/or silica shell of various thicknesses have been synthesized by a microemulsion method to enable controllable contributions interparticle magnetic dipole interaction via tunable distances. Bare particles direct surface contact were used as reference distinguish between and effects use Mössbauer spectroscopy. Superparamagnetic relaxation behaviour was analyzed SQUID-magnetometry techniques, showing decrease the...
We propose an approach for silica encapsulation of YV(0.7)P(0.3)O4:Eu3+, Bi3+ nanophosphors through a microemulsion process. The resulting Bi3+@SiO2 core–shell were characterized by transmission electron microscopy, UV/vis absorption and photoluminescence spectroscopy, energy-dispersive x-ray analysis (EDAX), selected area diffraction zeta-potential measurements. obtained nanocomposites have quite uniform spherical shape diameters about 15 nm. Zeta-potential measurements show that coated...
A new one-pot synthetic method for preparing core/shell YF3@SiO2 nanoparticles with different morphologies, from spherical to elongated structures ("pearl necklace"), is described; absorbance and photoluminescence spectroscopy reveals intrinsic but no extrinsic defects in the YF3.
Core–silica shell nanoparticles were prepared in a "reverse" manner by nucleation and growth of Au cores within hollow silica nanospheres.
Abstract In this work we describe an approach to fabricate MOF (metal‐organic framework) platelets with predefined shapes and well‐defined thicknesses. The process is based on growing thin, highly oriented ordered films by selective liquid‐phase epitaxy prestructured organic substrates. a second step, the are delaminated employing lift‐off process. freestanding were characterized TEM SEM, which showed no evidence of fracture or deformation shapes. (© 2010 WILEY‐VCH Verlag GmbH & Co....
The intra-atomic magnetic dipole moment - frequently called 〈Tz〉 term plays an important role in the determination of spin moments by x-ray absorption spectroscopy for systems with nonspherical density distributions. In this work, we present as a sensitive monitor to changes electronic structure vicinity phase transiton. particular, studied at Fe2+ and Fe3+ sites magnetite indicator Verwey transition combination circular dichroism functional theory. Our experimental results prove that there...