Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Elisabeth Tronc"'
Publikováno v:
Croatica Chemica Acta
Volume 91
Issue 4
Volume 91
Issue 4
Iron/Titanium oxide nanoparticles with initial molar ratio Fe/(Fe+Ti) = 0.05 (low loading of Fe in TiO2) and Fe/(Fe+Ti) = 0.15 (high loading of Fe in TiO2) were synthesized by a modified sol-gel procedure using Ti(IV)-isopropoxide, FeSO4 ∙ 7H2O and
Publikováno v:
Comptes Rendus Geoscience. 338:488-497
This overview features the chemical background on condensation phenomena of iron cations in aqueous solution. The formation of molecular clusters or nanosized solid phases is interpreted with illustrative mechanisms building a bridge between solution
Autor:
Cédric Froidefond, Agnès Pottier, Sophie Cassaignon, Elisabeth Tronc, Jean-Pierre Jolivet, Patrick Euzen, Corinne Chanéac
Publikováno v:
J. Mater. Chem.. 14:3281-3288
Chemistry in aqueous solution is an easy and versatile method to form nanosized metal oxide particles. Considering our previous results on magnetite Fe3O4, anatase TiO2, brucite Mg(OH)2, and boehmite γ-AlOOH, we show that the strict control of the p
Autor:
Marc Nogues, Corinne Chanéac, Elisabeth Tronc, Dominique Mailly, Franco Lucari, A.M. Testa, Natividad Gálvez, Wolfgang Wernsdorfer, Franco D'Orazio, Jean-Pierre Jolivet, Dino Fiorani, Jean-Marc Greneche
Publikováno v:
Journal of Magnetism and Magnetic Materials. 262:6-14
From AC susceptibility, magnetization and Mossbauer spectroscopy measurements, we show the dominant role of the surface properties and surface-to-core exchange coupling on the static and dynamic properties of γ-Fe 2 O 3 particles (2.7, 4.6 and 8.7 n
Autor:
Elisabeth Tronc, Corinne Chanéac, F. Villain, Sophie Cassaignon, Jean-Pierre Jolivet, Agnès Pottier
Publikováno v:
Journal of Materials Chemistry. 13:877-882
Nanoparticles of anatase with mean size in the range 5–10 nm were prepared by precipitation of TiCl4 in aqueous medium in the range 2 ≤ pH ≤ 6. Hydroxylation of TiCl4 at room temperature leads instantaneously to an amorphous titanium oxyhydroxi
Publikováno v:
Journal of Materials Chemistry. 11:1116-1121
Nanometric particles of titania, brookite and rutile polymorphs were synthesised by thermolysis of TiCl4 in concentrated HCl solutions. The Cl∶Ti molar ratio seems to be the key factor in determining the crystalline phases and their relative propor
Publikováno v:
The European Physical Journal Applied Physics. 10:167-172
Various properties of spinel iron oxide nanoparticles are reviewed in relation to the control of the particle size and the control of their dispersion in a variety of matrices. The deep knowledge of the different synthesis parameters and the interfac
Publikováno v:
J. Mater. Chem.. 6:1905-1911
Composite materials containing nanoparticles of maghaemite (γ-Fe2O3) dispersed in a silica matrix have been made by polymerizing a silica precursor (triethoxysilane or silicic acid) inside an aqueous sol of maghaemite particles. After gelation, the
Publikováno v:
Nanostructured Materials. 6:715-718
Composite materials were made up by dispersion of maghemite nanoparticles in an organically modified silicate matrix. The matrix acts as an antisintering agent for iron oxide grains and their spinel structure is retained at high temperature (1000 or
Publikováno v:
Journal of Non-Crystalline Solids. 170:21-26
Light scattering, electron microscopy and X-ray diffraction are used to determine the morphology and size of particles in diluted aqueous gel of tin (IV) oxyhydroxide. Data show that the gel is composed of spherical 2–3 nm sized crystalline particl