Preparation and characterization of magnetic α-Fe2O3/Fe3O4 heteroplasmon nanorods via the ethanol solution combustion process of ferric nitrate

Abstract

Abstract An ethanol solution combustion process of ferric nitrate for preparing magnetic α-Fe2O3/Fe3O4 heteroplasmon nanorods was introduced. The influencing factors, including the solvent type and the calcination conditions, were discussed. Anhydrous ethanol was considered to be the most suitable solvent for the preparation of α-Fe2O3/Fe3O4 heteroplasmon nanorods, and the optimal calcination time was determined to be 2 h. By changing the calcination temperature, α-Fe2O3/Fe3O4 heteroplasmon nanorods with different phase compositions could be obtained, and the mechanism was explained in detail. The results indicated that the rapid combustion method could achieve the controlled preparation of α-Fe2O3/Fe3O4 heteroplasmon nanorods, which provided a general preparation approach for α-Fe2O3/Fe3O4 heteroplasmon nanomaterials.