The Influence of Functionalization of the Fe3O4 Nanoparticle on its Dispersion Property

In this study, to improve the dispersity of Fe3O4 nanoparticles, dispersion properties were considered with various types of functionalization of Fe3O4 nanoparticles. Due to its high surface area, the electrically neutral state of its surfaces, and its magnetic momentum, Fe3O4 nanoparticles are easily aggregated in solution. In order to prevent aggregation, Fe3O4 nanoparticles were functionalized with carboxyl and amine groups in the form of a polymer compound. Carboxyl and amine groups were attached to the surface of Fe3O4 nanoparticles and the absolute value of the zeta potential was found to be enhanced by nearly 40 eV. Furthermore, the morphology and the magnetic property were analyzed for the application of Fe3O4 nanoparticles as a magnetic fluid. Key words: Fe3O4, Magnetic nanoparticle, Functionalization, Zeta potential, Dispersion