Facile Synthesis and Growth Mechanism of Uniform Fe3O4 Nanorod with Strong Magnetic Response

Rod-shaped Fe3O4 nanocrystals have been prepared with a high yield using a facile poly (vinyl pyrrolidone) (PVP)-mediated hydrothermal synthesis method at a low temperature of 90 °C. The formation mechanisms related to the chemical reaction, Fe3O4 nuclei and Fe3O4 rod-shaped crystal growth were discussed in detail. Furthermore, magnetic characterization showed that the Fe3O4 nanorod exhibited a strong magnetic response property, which leads to their potential applications in the bioseparation fields.