Results 191 to 200 of about 49,070 (235)

Lanthanide(III)-Doped Magnetite Nanoparticles

Journal of the American Chemical Society, 2009
Nearly monodisperse lanthanide-doped magnetite nanoparticles were obtained by thermally decomposing a mixture of Fe(acac)(3) and Ln(acac)(3) (acac = acetylacetonate; Ln = Sm, Eu, Gd) in the presence of passivating surfactants. Magnetic studies revealed room-temperature ferromagnetic behaviors of these doped nanoparticles, distinctly different from ...
Channa R, De Silva, Steve, Smith, Inbo, Shim, Jeffrey, Pyun, Timothy, Gutu, Jun, Jiao, Zhiping, Zheng   +6 more
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Extracellular Synthesis of Magnetite and Metal-Substituted Magnetite Nanoparticles

Journal of Nanoscience and Nanotechnology, 2006
We have developed a novel microbial process that exploits the ability of Fe(III)-reducing microorganisms to produce copious amounts of extracellular magentites and metal-substituted magnetite nanoparticles. The Fe(III)-reducing bacteria (Theroanaerobacter ethanolicus and Shewanella sp.) have the ability to reduce Fe(III) and various metals in aqueous ...
Y, Roh, H, Vali, T J, Phelps, J W, Moon
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Stability of core–shell magnetite nanoparticles

Colloids and Surfaces B: Biointerfaces, 2014
In the paper, we present three different types of magnetite nanoparticles which were prepared from co-percipitation of iron (II) and (III) chlorides in aqueous solution with and without SiO2 and from thermal decomposition of iron (III) acetylacetonate in nonaqeous solutions.
B, Kalska-Szostko, U, Wykowska, D, Satuła, E, Zambrzycka   +3 more
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Tissue Engineering Using Magnetite Nanoparticles

2011
The major advantage of magnetic manipulation is "remote control." Magnetic labeling of cells with magnetic nanoparticles enables the manipulation of cells and also the control of cell functions by applying an external magnetic field. "Functional" magnetite nanoparticles were developed for cell manipulation using magnetic force, and the magnetite ...
Akira, Ito, Masamichi, Kamihira
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Microwave Assisted Synthesis of Magnetite Nanoparticles

Journal of Nanoscience and Nanotechnology, 2014
Magnetite nanoparticles of size ranging from 7-10 nm are prepared from aqueous solutions of Fe2+ and Fe3+ by microwave irradiation at different reaction temperatures ranging from 50 to 200 °C. The effect of reaction temperature on the structural and magnetic properties of nanoparticles is studied using X-ray diffraction (XRD), Transmission electron ...
S S, Pati, S, Kalyani, V, Mahendran, John, Philip   +3 more
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Interaction of fibrinogen with magnetite nanoparticles

Biophysics, 2010
The interaction between fibrinogen and magnetite nanoparticles in solution has been studied by the methods of spin labeling, ferromagnetic resonance, dynamic and Rayleigh light scattering. It was shown that protein molecules adsorb on the surface of nanoparticles to form multilayer protein covers.
A V, Bychkova, O N, Sorokina, A L, Kovarskiĭ, A B, Shapiro, V B, Leonova, M A, Rozenfel'd   +5 more
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Growing ZnO Crystals on Magnetite Nanoparticles

Chemistry – A European Journal, 2004
AbstractWe report herein on the oriented growth of ZnO crystals on magnetite nanoparticles. The ZnO crystals were grown by hydrolyzing a supersaturated aqueous solution of zinc nitrate. The seeds for the growth were magnetite nanoparticles with a diameter of 5.7 nm and a narrow size distribution. Hollowed ZnO hexagons of 0.15 μm width and 0.5 μm length
Rachel, Turgeman, Shay, Tirosh, Aharon, Gedanken   +2 more
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Blocking Properties of Superparamagnetic Magnetite Nanoparticles and Gold/Superparamagnetic Magnetite Composite Nanoparticles

Advanced Materials Research, 2015
The UV and IR block properties of superparamagnetic magnetite nanoparticles (SPMN) and SPMN/gold composite nanoparticles are investigated. The composite nanoparticles were prepared via sonochemical assisted reduction of gold precursor and deposition of gold nanoparticles (GNP) on amine functionalized SPMN.
Bashiru Kayode Sodipo, Azlan Abdul Aziz
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Functionalized Magnetite Nanoparticles—Synthesis, Properties, and Bio-Applications

Critical Reviews in Solid State and Materials Sciences, 2007
Nanotechnology has generated tremendous hopes in recent years toward the design of advanced functional materials, especially in the bio-medical field. Nano-sized-materials such as magnetite nanoparticles display indeed fascinating physico-chemical properties that, if tuned properly, can be exploited to design new bio-diagnostic and therapeutic ...
P Majewski, B Thierry
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Synthesis and characterization of magnetite nanoparticles from mineral magnetite

Journal of Magnetism and Magnetic Materials, 2013
Abstract We have synthesized magnetite nanoparticles with sizes that range from 20 to 30 nm from mineral magnetite roughly 45 μm in size. The procedure consists in the dissolution of the mineral in an acidic medium and subsequent precipitation in a basic medium in the presence of oleic acid.
Mauricio Morel, Francisco Martínez, Edgar Mosquera   +2 more
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