Improved Solvothermal Synthesis of γ-Fe2O3 Magnetic Nanoparticles for SiO2 Coating
Rashmi Mahajan, Subramanian Suriyanarayanan, Ian A. Nicholls
Abstract
nanoparticles (MNPs) were prepared by a simple, improved, one-pot solvothermal synthesis using SDS and PEG 6000 as double capping reagents. This double protecting layer afforded better MNP uniformity (Z average 257 ± 11.12 nm, PDI = 0.18) and colloidal stability. Materials were characterized by DLS, SEM, TEM, XPS, and XRD. The use of these MNPs in the synthesis of core-shell structures with uniform and tunable silica coatings was demonstrated, as silica coated MNPs are important for use in a range of applications, including magnetic separation and catalysis and as platforms for templated nanogel synthesis.
Topics & Concepts
DispersityMaterials scienceChemical engineeringCoatingNanoparticleMagnetic nanoparticlesReagentColloidMagnetic separationX-ray photoelectron spectroscopyNanotechnologySolvothermal synthesisPolymer chemistryChemistryOrganic chemistryMetallurgyEngineeringNanoparticle-Based Drug DeliveryIron oxide chemistry and applicationsCharacterization and Applications of Magnetic Nanoparticles