Results 21 to 30 of about 35,382 (205)

Local Structure and Magnetism of Fe₂O₃ Maghemite Nanocrystals: The Role of Crystal Dimension

Nanomaterials, 2020
Here we report on the impact of reducing the crystalline size on the structural and magnetic properties of γ-Fe2O3 maghemite nanoparticles. A set of polycrystalline specimens with crystallite size ranging from ~2 to ~50 nm was obtained combining ...
Mauro Coduri, Paolo Masala, Lucia Del Bianco, Federico Spizzo, Davide Ceresoli, Carlo Castellano, Serena Cappelli, Cesare Oliva, Stefano Checchia, Mattia Allieta, Dorothee-Vinga Szabo, Sabine Schlabach, Michael Hagelstein, Claudio Ferrero, Marco Scavini   +14 more
doaj   +1 more source

Image-guided therapy using maghemite-MOF nanovectors [PDF]

, 2017
Advances in nanotechnology offer the possibility of tailored delivery of therapeutics with real-time imaging of disease. In this issue of Chem, Steunou and co-workers amalgamate the powerful MRI properties of ultra-small paramagnetic iron oxides with the
Abánades Lázaro, Isabel, Forgan, Ross F.   +1 more
core   +1 more source

Reassessing the role of magnetite during natural hydrogen generation

Frontiers in Earth Science, 2023
Interactions between water and ferrous rocks are known to generate natural H2 in oceanic and continental domains via the oxidation of iron. Such generation has been mainly investigated through the alteration of Fe2+-silicate and some Fe2+-carbonates.
Ugo Geymond, Ugo Geymond, Théo Briolet, Théo Briolet, Valentine Combaudon, Valentine Combaudon, Olivier Sissmann, Isabelle Martinez, Mathieu Duttine, Isabelle Moretti   +9 more
doaj   +1 more source

The surface reactivity of iron oxide nanoparticles as a potential hazard for aquatic environments: A study on Daphnia magna adults and embryos [PDF]

, 2018
open5noNano-ecotoxicology is extensively debated and nanomaterial surface reactivity is an emerging topic. Iron oxide nanoparticles are widely applied, with organic or inorganic coatings for stabilizing their suspensions.

core   +1 more source

Surface effects in maghemite nanoparticles

Journal of Magnetism and Magnetic Materials, 2007
A consistent model is presented for the variation of saturation magnetization with particle size in maghemite nanoparticles, based on the existence of a magnetically disordered layer with a constant thickness of 1 nm. For particles smaller than 3 nm, layer thickness increases rapidly, and MS is already zero for 2.5 nm particle size.
Millan, A., Urtizberea, A., Silva, N. J. O., Palacio, F., Amaral, V. S., Snoeck, E., Serin, V.   +6 more
openaire   +2 more sources

Magneto-sensitive hybrid nanocomposites of water-soluble sodium alginate cross-linked with calcium ions and maghemite

eXPRESS Polymer Letters, 2018
A synthetic procedure is described for preparation of magneto-sensitive nanocomposites from maghemite nanoparticles and a natural polysaccharide, sodium alginate cross-linked with calcium ions.
V. V. Spiridonov, I. G. Panova, L. A. Makarova, S. B. Zezin, A. A. Novakova, T. G. Baluyan, A. V. Sybachin, V. V. Kuznetsov, A. A. Yaroslavov   +8 more
doaj   +1 more source

Synthesis and cytotoxicity analysis of fatty acid-mediated maghemite nanoparticles in cancerous and normal cells [PDF]

Nanomedicine Journal
Objective(s): Our goal was to synthesize and characterize fatty acid-capped maghemite nanoparticles (NPs) and evaluate their cytotoxic effect on human cancer and normal cell lines.Methods: Maghemite NPs were synthesized by co-precipitating iron (II ...
Mina Zangouei, Elham Einafshar, Fatemeh Forouzanfar, Tayebeh Hamzehloei, Zahra Meshkat, Aida Gholoobi   +5 more
doaj   +1 more source

Assessment of the Capability of Magnetic Nanoparticles to Recover Neodymium Ions from Aqueous Solution

Acta Chimica Slovenica, 2022
Magnetic nanoparticles (MNPs) have received increasing attention for various applications due to their fast synthesis, versatile functionalization, and recyclability by the application of a magnetic field.
Ana Ambrož, Irena Ban, Thomas Luxbacher
doaj   +1 more source

Cerium Oxide-Decorated γ-Fe2O3 Nanoparticles: Design, Synthesis and in vivo Effects on Parameters of Oxidative Stress

Frontiers in Chemistry, 2020
Magnetic γ-Fe2O3/CeOx nanoparticles were obtained by basic coprecipitation/oxidation of iron chlorides with hydrogen peroxide, followed by precipitation of Ce(NO3)3 with ammonia.
Maksym Moskvin, Irena Marková, Hana Malínská, Denisa Miklánková, Martina Hüttl, Olena Oliyarnyk, Ognen Pop-Georgievski, Alexander Zhigunov, Eduard Petrovský, Daniel Horák   +9 more
doaj   +1 more source

Electronic and magnetic structure of epitaxial NiO/Fe$_3$O$_4$(001) heterostructures grown on MgO(001) and Nb-doped SrTiO$_3$(001) [PDF]

, 2016
We study the underlying chemical, electronic and magnetic properties of a number of magnetite based thin films. The main focus is placed onto NiO/Fe$_3$O$_4$(001) bilayers grown on MgO(001) and Nb-SrTiO$_3$(001) substrates.
Arenholz, E., Bartkowski, S., Gorgoi, M., Kuepper, K., Kuschel, O., Ovsyannikov, R., Pathe, N., Reiss, G., Schemme, T., Schmalhorst, J., Thomas, A., Wollschläger, J.   +11 more
core   +3 more sources