نتایج جستجو برای: zinc ferrites nanoparticle

تعداد نتایج: 104798  

Journal: :Physical chemistry chemical physics : PCCP 2012
Christopher A Feigl Amanda S Barnard Salvy P Russo

This paper describes the equilibrium morphologies of zinc sulfide nanoparticles in the wurtzite phase as a function of size, determined using ab initio Density Functional Theory (DFT) simulations and a shape-dependent thermodynamic model predicting the Gibbs free energy of a nanoparticle. We investigate the relative stabilities of a variety of nanoparticle shapes based on the wurtzite structure...

Journal: :Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy 2017
Jaba Saha Arpan Datta Roy Dibyendu Dey D Bhattacharjee Pabitra Kumar Paul R Das Syed Arshad Hussain

Fluorescence Resonance Energy Transfer between two dyes Fluorescein and Rhodamine 6G were investigated in solution in the presence and absence of Zinc oxide nanoparticle. Zinc oxide nanostructure is used as the fluorescence enhancing agent for the present study since donor (Fluorescein) fluorescence increase significantly in presence of nanoparticle. Accordingly, the energy transfer efficiency ...

2008
Ye Zhang Feng Zhu Junxi Zhang Lingli Xia

We were successful in synthesizing periodic layered zinc acetate nanobelts through a hydrothermal solution process. One-dimensional structured ZnO nanoparticle aggregate was obtained by simple thermal annealing of the above-mentioned layered ZnO acetate nanobelts at 300 C. The morphology, microstructure, and composition of the synthesized ZnO and its precursors were characterized by transmissio...

2016
P. Tailhades B. Gillot A. Rousset

When highly divided spinel fenites become reactive enough with oxygen, to allow the oxidation of the Fe ions at low temperature and of substitute cations too, when these cations are capable of different valence states. We prepared fine particles of spinel ferrites substituted by Mn, Mo, Cu, by "chimie douce", especially from oxalate precursors and used them to reveal and to study the oxido-redu...

Es’haghi, Ali, Homayouni Tabrizi, Masoud, shamasi, Zahra,

Introduction: Free radicals are molecules that have unpaired electrons in their last layer. The excessive production of free radicals causes oxidative stress. Oxidative stress thus adversely alters proteins, DNA and oxidation of the membrane phospholipids. Methods: The cytotoxic effects of zinc oxide nanoparticle were evaluated using MTT (3- (4-5-dimethylthiazol-2-yl) -2,5-difenyltetrazolium br...

Journal: :Journal of nanoparticle research : an interdisciplinary forum for nanoscale science and technology 2009
S Padalkar J Hulleman S M Kim T Tumkur J-C Rochet E Stach L Stanciu

In the present study, we have exploited the properties of a fibrillar protein for the template synthesis of zinc sulfide (ZnS) nanoparticle chains. The diameter of the ZnS nanoparticle chains was tuned in range of ~30 to ~165 nm by varying the process variables. The nanoparticle chains were characterized by field emission scanning electron microscopy, UV-Visible spectroscopy, transmission elect...

Background and Objective: Manufactured wastewater management of industrial units containing toxic pollutants is essential for environmental protection. Considering the great applications and effects of using the nanomaterial and nanotechnology in the field of environmental protection, the nanoparticle of ZnFe2O4 has been used as a basic particle. On the other hand, enzyme processes, due to thei...

2012
Martin Peckerar Thomas Martin Aris Christou

The nanoparticle technologies consisting of multiple layers of mixtures of activated carbon and ruthenium (IV) oxide for super capacitors are reported. The mono-particulate layer process described here is a modified Langmuir-Blodgett trough. We report the processes for a spray-coated zinc nanopowder electrode used as a counter-electrode forming a galvanic cell of extremely high charge storage c...

Nanocomposite zinc ferrites were synthesized using glycine-nitrates by sol–gel auto-combustion technique. The influence of calcination temperatures varying from 400 to 900°C on structural and magnetic properties of spinel ZnFe2O4 powders have been investigated. The characterization measurements including X-ray diffraction (XRD), scanning electron microscopy (SEM) and vibrating sample magnetomet...

Journal: :Materials research foundations 2021

Nanotechnology, when this word comes in mind, it gives deep thought of new development communication, medical science, intelligent transport system and many more. Ferrites nanoparticles have great significance owing to their amazing chemical physical properties. In modern era we are developing materials for microwave applications communication devices. Before the discovery semiconductor memory ...

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