Preparation and characterization of functional silica hybrid magnetic nanoparticles

We report on the synthesis and characterization of functional silica hybrid magnetic nanoparticles (SHMNPs). The co-condensation of 3-aminopropyltriethoxysilane (APTES) and tetraethyl orthosilicate (TEOS) in presence of superparamagnetic iron oxide nanoparticles (SPIONs) leads to hybrid magnetic sil...

Full description

Saved in:
Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2014-08, Vol.362, p.72-79
Main Authors: Digigow, Reinaldo G., Dechézelles, Jean-François, Dietsch, Hervé, Geissbühler, Isabelle, Vanhecke, Dimitri, Geers, Christoph, Hirt, Ann M., Rothen-Rutishauser, Barbara, Petri-Fink, Alke
Format: Article
Language:English
Subjects:
Co-condensation
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Diamagnetism, paramagnetism and superparamagnetism
Exact sciences and technology
Hybrid nanoparticle
Iron oxide nanoparticle
Iron oxides
Magnetic properties
Magnetic properties and materials
Magnetic properties of nanostructures
Magnetism
Nanoparticles
Physics
Silanes
Silica
Silicon dioxide
Surface functionalization
Surface properties
Tetraethyl orthosilicate
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We report on the synthesis and characterization of functional silica hybrid magnetic nanoparticles (SHMNPs). The co-condensation of 3-aminopropyltriethoxysilane (APTES) and tetraethyl orthosilicate (TEOS) in presence of superparamagnetic iron oxide nanoparticles (SPIONs) leads to hybrid magnetic silica particles that are surface-functionalized with primary amino groups. In this work, a comprehensive synthetic study is carried out and completed by a detailed characterization of hybrid particles׳ size and morphology, surface properties, and magnetic responses using different techniques. Depending on the mass ratio of SPIONs and the two silanes (TEOS and APTES), we were able to adjust the number of surface amino groups and tune the magnetic properties of the superparamagnetic hybrid particles. •Controlled synthesis of functional silica hybrid magnetic NPs by a single-step co-condensation process of APTES and TEOS in presence of SPIONs.•Detailed characterization of the hybrid particles in terms of composition, size/morphology, surface, and magnetic responses.•Controlled number of surface amino groups and magnetic properties of the hybrid particles by tuning the mass ratio of SPIONs and silanes (APTES/TEOS).
ISSN:0304-8853
DOI:10.1016/j.jmmm.2014.03.026