One-Step Synthesis of NiFe2O4 Magnetic Nanomaterial via Solvothermal Method

Through optimizing the experimental conditions (including solvent, solvothermal reaction temperature and time), NiFe2O4 magnetic nanomaterial with good crystallization and super paramagnetic performance, was prepared by one-step solvothermal method using Fe(NO3)(3)center dot 9H(2)O and Ni(NO3)(2)center dot 6H(2)O as raw materials and EtOH as solvent without adding any alkaline precipitation agent or high-temperature crystallization process. The results show that the solvents, H2O and (H2O+EtOH), are disadvantageous to the target magnetic species NiFe2O4.Under the condition of EtOH as solvent, the proper solvothermal temperature and reaction time must be guaranteed in order to obtain NiFe2O4 magnetic nanomaterial with high purity. The magnetic properties of prepared materials are related to the content of NiFe2O4 and its crystallization degree. The prominent advantages of this preparation method are of simpleness, speediness, low cost, free pollution from the source and friendly-environment. And the prepared materials have excellent magnetic performance.