Results 211 to 220 of about 24,891 (249)

Organophosphorous functionalization of magnetite nanoparticles

Colloids and Surfaces B: Biointerfaces, 2013
In this work magnetite nanoparticles covered by gold and silver shell were obtained. Analyzed particles were modified by two kinds of organophosphorous compounds: 3-phosphonopropionic acid and 16-phosphonohexadecanoic acid. Enzyme immobilization on particles modified in such a way was tested.
B, Kalska-Szostko, M, Rogowska, D, Satuła   +2 more
openaire   +2 more sources

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 ...
Y, Roh, H, Vali, T J, Phelps, J W, Moon
openaire   +2 more sources

Microwave Synthesis of Magnetite Nanoparticles and Mg-Doped Magnetite Nanoparticles by Precipitation of Fe²⁺ Ions

Journal of Nanoscience and Nanotechnology, 2021
This study is focused on a simple and fast synthesis of nonstoichiometric magnetite nanoparticles with the chemical formula Fe3−XO4 and magnesium ferrite nanoparticles (Mg1−XFe2+XO4). The nanoparticles were prepared with Fe2+ ions (FeSO4 · H2O) alkalised by KOH under oxidative conditions and in a microwave field.
Ochmann, Martin, Machala, Libor, Kašlík, Josef   +2 more
openaire   +2 more sources

Preparation and Properties of Magnetite and Polymer Magnetite Nanoparticles

Langmuir, 1999
A novel approach to prepare magnetic polymeric nanoparticles by synthesis of the magnetite core and polymeric shell in a single inverse microemulsion is reported. Stable magnetic nanoparticles colloid dispersion with narrow size distribution can thus be produced.
Pierre A. Dresco, Vladimir S. Zaitsev, Richard J. Gambino, Benjamin Chu   +3 more
openaire   +1 more source

Effect of magnetite nanoparticles on human blood components

Bulletin of Experimental Biology and Medicine, 2023
The qualitative composition and zeta potential of magnetite nanoparticles (size 4.2±1.2 nm) obtained by co-precipitation method were determined by X-ray and diffraction dynamic light scattering. The zeta potential of Fe3O4 particles was -15.1±4.5 mV.
I A, Koltakov, E V, Shilova, M A, Nakvasina, S S, Antipov, E E, Korchagina, V G, Artyukhov   +5 more
openaire   +2 more sources

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
openaire   +2 more sources

Strong adsorption of chlorotetracycline on magnetite nanoparticles

Journal of Hazardous Materials, 2011
In this work, environmentally friendly magnetite nanoparticles (Fe(3)O(4) MNPs) were used to adsorb chlorotetracycline (CTC) from aqueous media. Fe(3)O(4) MNPs exhibit ultrahigh adsorption ability to this widely used antibiotic. The adsorption behavior of CTC on Fe(3)O(4) MNPs fitted the pseudo-second-order kinetics model, and the adsorption ...
Di, Zhang, Hongyun, Niu, Xiaole, Zhang, Zhaofu, Meng, Yaqi, Cai   +4 more
openaire   +2 more sources

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
openaire   +2 more sources

Stimuli-Responsive Magnetite Nanoparticle Monolayers

The Journal of Physical Chemistry C, 2011
The stimuli-responsive behavior of copolymer-capped NPs (Fe 3O4@MEO2MA90-co-OEGMA10 and Fe3O4@MEO2MA) was studied in the temperature interval between 6 and 43 °C at the air/water interface, and at 20 and 37 °C on the surface of 150 mM NaCl, 1 M NaCl, and 2% citric acid aqueous solutions.
Stefaniu, C., Chanana, M., Wang, D., Brezesinski, G., Möhwald, H.   +4 more
openaire   +2 more sources

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
openaire   +2 more sources