نتایج جستجو برای: mgo nanoparticles

تعداد نتایج: 113944  

2011
Antonio José Paleo Carlos Martínez-Boubeta Lluís Balcells Carlos Miguel Costa Vitor Sencadas Senentxu Lanceros-Mendez

Nanocomposites of the self-forming core-shell Co-MgO nanoparticles, which were of approximately 100 nm in diameter, and poly(vinylidene fluoride) (PVDF) polymer have been prepared. When the polymer is crystallized in the α-phase, the introduction of the nanoparticles leads to nucleation of the γ-phase of PVDF, increasing also the melting temperature of the polymer. With the introduction of the ...

Leila Kiamohammadi Leili Asadi Samideh Khoei Sepideh Khoee

Introduction: Graphene oxide (GO) sheets are carbon-networking nanomaterials offering excellent potential for drug delivery platforms due to hydrophobic interactions and high drug-loading efficiency. Superparamagnetic iron oxide nanoparticles can be used in certain applications such as cell labeling, drug delivery, targeting, magnetic resonance imaging and hyperthermia. Due t...

2005
J. Arbiol F. Peiró

In this work, we present the correlation of the magnetic and structural properties of Co nanoparticles deposited by sputtering on Si3N4 substrates at different temperatures, and covered with different capping layers, two insulators, AlN and MgO, and a metal, Pt. High-resolution transmission electron microscopy shows the formation of CoPt3 and Co2N, for the Pt and AlN capping layers, respectivel...

Journal: Nanomedicine Journal 2016
Gh. Rahimi M. Kimiaee Sadr M. Mirhosseini

Objective: The objective of this study was to investigate the antibacterial activities of combination of MgO and ZnO nanoparticles in the presence of heat against Escherichia coli and Staphylococcus aureus. Materials and Methods:Bacteria were grown on either agar or broth media followed by the addition of ZnO and MgO nanoparticles. Then the combined effect of ZnO and MgO nanoparticles was inves...

Journal: :organic chemistry research 0
reza ranjbar-karimi vali-e-asr university alireza talebizadeh vali-e-asr university manizheh asadi vali-e-asr university

mgo nanopartticels (np-mgo) in average size between 30—130 nm were prepared by sonochemistry method. some phenols have been converted to ortho-hydroxybezaldehyd by ortho-formylation using mgo nanoparticles and (ch2o)n in xylene and subsequently treated with aqueous nh2oh.hcl, affording the corresponding aldoxime in a one-pot procedure. moreover, this one-pot process, with two transformations, o...

Journal: :international journal of bio-inorganic hybrid nanomaterials 0

in this scientific research, magnesium oxide (mgo) nanoparticles were synthesized from magnesium nitrate and ammonium solutions via microwave@sol-gel process. the structure and the morphology of the synthesized nanoparticles has been identified and characterized by x-ray diffraction (xrd), n2-bet (brunauer-emmett-tell), scanning electron microscopy (sem) and fourier transform infrared (ftir) te...

Journal: :journal of nanostructures 2015
j. safaei-ghomi s. zahedi m. javid m. a. ghasemzadeh

this work described one pot syntheses of polysubstituted 2,6- dicyanoaniline and 2-(3-oxo-1,3-diarylpropyl) malononitrile derivatives in the presence of mgo nanoparticles (nps) under grinding conditions and microwave irradiation, respectively. the simple experimental procedure includes shorter reaction times, higher yields, lower cost and environmental friendliness. other remarkable features ar...

Amini, Mahboubeh, Naghsh, Nooshin, Ostadsharif, Maryam,

Background: Diabetes is a metabolic disorder with chemical, physiological and pathological changes in the liver. Due to the side effects of insulin, the use of herbal medicines such as Nigella sativa with flavonoid compounds and antioxidant properties is considered. In this study, the effect of magnetic hydroethanolic extract of Nigella sativa and MgO nanoparticles separately and simultaneously...

Journal: :Nanomedicine : nanotechnology, biology, and medicine 2012
De-Rui Di Zhi-Zhu He Zi-Qiao Sun Jing Liu

UNLABELLED A new conceptual modality for nano-cryosurgical ablation of tumors is proposed in this article. The main strategy is to apply MgO nanoparticles (NPs), which are nontoxic, biodegradable, and have few side-effects on the human body, to mediate the freezing procedure effectively. Detailed investigation via animal experiments and nucleation analysis demonstrated that delivery of MgO NPs ...

Journal: :international journal of nano dimension 0
a. bagheri gh. department of chemistry, center tehran branch, islamic azad university, tehran, iran. z. mirjani kahaki department of chemistry, center tehran branch, islamic azad university, tehran, iran.

oxide nanoparticles can exhibit unique physical and chemical properties due to their limited size and a high density of corner or edge surface sites. in this study, mgo nanoparticle was synthesized using mg(ch3coo)2 and hexamethylenetetramine as starting materials. the structure and optical properties of these particles are investigated by using x-ray diffraction (xrd), scanning electron micros...

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