Magnetic-field-induced synthesis of Fe3O4 nanorods by a gas–liquid interfacial process: Microstructure control, magnetic and photocatalytic properties

• Fe3O4 nanorods were synthesized via a MFI gas–liquid interfacial route.
• The morphology of the Fe3O4 nanoparticle can be changed during its growth process.
• MF render Fe3O4 nanorods higher degree of crystallinity and better magnetic property.

In this paper, we designed a magnetic field (MF) induced gas–liquid interface route to synthesize magnetic Fe3O4 nanorods (NRs). The results showed that the MF can significantly affect the morphology of the particles. In this original method, only relatively inexpensive and environmental chemicals were used. The structure and morphology of the Fe3O4 NRs were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy and vibrating sample magnetometry technique. The crystal growth mechanisms in the magnetic field induced process were expounded in detail. The as-synthesized Fe3O4 NRs were successfully used as a catalytic carrier for the photo degradation of phenol.

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