Preparation and Characterization of CTAB-Coated Fe₃O₄ Nanoparticles

Abstract

The synthesis of magnetic nanoparticles (Fe3O4) and their coating with cetyltrimethyl ammonium bromide (CTAB) has been reported in this study. The synthetic iron oxide nanoparticles were characterized using FTIR, streaming current potential (SCP) and X-ray diffraction techniques. Particle size distribution of bare and coated nanoparticles was investigated by dynamic light scattering (DLS) technique and transmission electron microscopy (TEM). The results obtained revealed that the CTAB modification effectively decreased the particle size and enhanced the dispersion of the particles in solution. In addition, simple separation by using a magnetic field was achieved because CTAB did not alter the superparamagnetic properties of particles.