Synthesis of magnetic iron oxide nanoparticles at the interface of the polyethylene glycol-ammonium sulfate-water extraction system

摘要

The synthesis of iron oxide nano- and microparticles in the PEG 3000-ammonium sulfate-water extraction system has been accomplished for the first time. Upon the addition of a solution of ammonia, iron oxide particles with sizes from 200 nm to 10 mu m are produced at the interface. The phase composition of the obtained oxides consisting of magnetite with goethite impurity has been determined.