NiFe2O4 Nanoparticles: Novel Synthesis, Characterization and Photocatalytic Activity

Document Type : Research Paper


1 Department of Chemistry, Miyaneh Branch, Islamic Azad University, Miyaneh, I.R. Iran

2 Department of Chemistry, Marand Branch, Islamic Azad University, Marand, Iran

3 Institute of Nano Science and Nano Technology, University of Kashan, Kashan, P.O. Box 87317-51167, Iran.


Researchers and scientists in the field of environment are deeply concerned about the toxic impact of organic pollutants entering water. Photocatalytic process is attractive and promising process for removal of various organic pollutants. The application of novel magnetic nanostructures in the photocatalytic process has found the considerable attention nowadays. Here, the novel NiFe2O4 nanoparticles was synthesized via simple and facile co-precipitation route. The structural properties of product were characterized via X-ray powder diffraction (XRD) and Fourier-transform infrared spectroscopy (FTIR). The magnetic properties of sample was characterized via vibrating-sample magnetometer (VSM). VSM analysis confirmed that prepared nanoparticles have superparamagnetic properties with the remanent magnetization (Mr) 10 emu/g and magnetization at saturation (Ms) 30 emu/g. The morphological and optical properties of as-obtained nickel ferrite nanoparticles were analyzed via scanning electron microscope (SEM) and UV-Vis spectroscopy respectively. The calculated optical band gap of prepared NiFe2O4 nanoparticles (Eg=2.87 eV) approved the high potential of NiFe2O4 nanoparticles in the field of photocatalysis. Finally, The prepared NiFe2O4 nanoparticles was applied for photodegradation of acid violet and methylene blue. It was found that NiFe2O4 nanoparticles shows higher photocatalytic activity toward methylene blue (79%) than acid violet (68%). Also, results confirmed that the photocatalytic activity of NiFe2O4 nanoparticles is improved via increasing pH.