Details

Autor(en) / Beteiligte

• Makrygenni, Ourania
• Secret, Emilie
• Michel, Aude
• Brouri, Dalil
• Dupuis, Vincent
• Proust, Anna
• Siaugue, Jean-Michel
• Villanneau, Richard

Titel

Heteropolytungstate-decorated core-shell magnetic nanoparticles: A covalent strategy for polyoxometalate-based hybrid nanomaterials

Ist Teil von

• Journal of colloid and interface science, 2018-03, Vol.514, p.49-58

Ort / Verlag

United States: Elsevier Inc

Erscheinungsjahr

2018

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The covalent grafting of hybrid derivatives of polyoxometalates to core-shell magnetic nanoparticles (in which the cores are γ-Fe2O3 particles and the shell formed by a silica coating) induced a very good nanostructuration of the polyoxometalates at the surface of the nanoparticles. [Display omitted] Amino-functionalized core–shell magnetic nanoparticles have been covalently grafted with Polyoxometalates (POMs). These multifunctional nanocomposites have been obtained through the coupling of heteropolytungstate-based hybrids bearing carboxylic acid functions with aminopropyl functions that decorate the core–shell nanoparticles. The physical properties of the resulting materials have been studied by a large set of techniques. The very good nanostructuration of the POMs at the surface of the obtained nanoparticles have thus been directly observed by high-resolution transmission electronic microscopy (HR-TEM). Furthermore, the hyperthermia properties of these nanocomposites have been also considered as a function of the size of the magnetic core. Finally, the stability of these suspensions in organic media makes them particularly interesting in the frame of their processing or their potential use as nanocatalysts.