Synthesis of Fe Nanoparticles Functionalized with Oleic Acid Synthesized by Inert Gas Condensation

Abstract EN

In this work, we study the synthesis of monodispersed Fe nanoparticles (Fe-NPs) in situ functionalized with oleic acid.

The nanoparticles were self-assembled by inert gas condensation (IGC) technique by using magnetron-sputtering process.

Structural characterization of Fe-NPs was performed by transmission electron microscopy (TEM).

Particle size control was carried out through the following parameters: (i) condensation zone length, (ii) magnetron power, and (iii) gas flow (Ar and He).

Typically the nanoparticles generated by IGC showed diameters which ranged from ~0.7 to 20 nm.

Mass spectroscopy of Fe-NPs in the deposition system allowed the study of in situ nanoparticle formation, through a quadrupole mass filter (QMF) that one can use together with a mass filter.

When the deposition system works without quadrupole mass filter, the particle diameter distribution is around +/−20%.

When the quadrupole is in line, then the distribution can be reduced to around +/−2%.