Particle and Aerosol Research Vol. 9, No. 4, December 2013 |
ISSN : 1738-8716 (Print) ISSN : 2287-8130 (Online) |
Flame Synthesis of Silica‐Coated Iron Oxide Nanoparticles and Their Characterization
Kimin Jun, Sangsun Yang, Jeonghoon Lee, Peter V. Pikhitsa and Mansoo Choi
Abstracts
We have used the modified diffusion flame burner to synthesize silica coated iron oxide nanoparticles having
enhanced superparamagnetic property. Silica‐encapsulated iron oxide particles were directly observed using a high
resolution transmission electron microscope. From the energy dispersive X‐ray spectroscopy (EDS) and zeta potential
measurements, the iron oxide particles were found to be completely covered by a silica coating layer. X‐ray
photoelectron spectroscopy (XPS) and X‐ray diffraction (XRD) measurements revealed that the iron oxide core consists
of ¥ã‐Fe2O3 rather than ¥á‐Fe2O3. Our magnetization measurements support this conclusion. Biocompatibility test of the
silica‐coated iron oxide nanoparticles is also conducted using the protein adsorption onto the coated particle.
Keywords£ºNanoparticles, Coating, Iron oxide, Silica, Magnetism
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