CTAB-assisted of Fe2O3/CeO2 nanosized prepared by coprecipitation method

Document Type: Research Paper


Recently, cerium oxide (CeO2) nanoparticles have been widely used in engineering and
medical sciences due to the diversity of their applications. Fe-Ce nanoparticles were synthesized by
simple co-precipitation method via iron nitrate (Fe(NO3)3.9H2O) and cerium nitrate (Ce(NO3)3.6H2O) as
precursor in the presence of cetyltrimethylammonium bromide (CTAB) surfactant. The samples were
characterized by high resolution transmission electron microscopy (HRTEM), field effect scanning
electron microscopy (FESEM), X-ray diffraction (XRD), vibration sampling magnetometer (VSM), and
Fourier transform infrared spectroscopy (FTIR) in different temperature. The XRD results showed that
Fe-doped CeO2 was single-phased with a cubic structure. The particle size of as-prepared samples
was around 45 nm and for annealed one was around 32 nm in diameter at 500 °C for 3 hours. The
TEM studies showed the squared-like shaped nanosized particles with good distribution particle. The
sharp peaks in FTIR spectrum determined the element of Fe-Ce nanoparticles. The result of magnetic
measurements showed coercive field and saturation magnetism around 1632 G and 0.055 emu/g,
respectively for as-prepared samples.