Magnetic Properties of Fe3O4@Graphene: Preparation from Natural Material

Abstract

This work presents a study of structure and the magnetic behavior of Fe3O4 nanoparticles produced in the extraction process and Magnetic Nanoparticle of Fe3O4 coated by graphene oxide (GO) from natural materials of coconut shells (graphite). Preparation of the core-shell composite Fe3O4@Graphene was carried out with ex-situ process. Superparamagnetic analysis of Fe3O4, and Fe3O4@Graphene using VSM (vibrating sample magnetometer), structure analysis using HRPD, TEM and adsorption of dyes solution in the drink water. Obtained results, along with the thickening of the skin (Graphene that encloses the core particles (Fe3O4), the saturation of the magnetization (Ms) decreases. And the amount of GO composition affects the coating decorated (shell); Fe3O4/Graphene absorptivity increases when walls are thinner.