Preparation and Characterization of Expandable Graphite Decorated with Rare Earth Nanoparticles CeO₂

Abstract

In this paper, it can be seen that the optimum mixture ratio of graphite to other contents (graphite: HNO3: H2O2: KMnO4 ) is 1.0(g):6(ml): (2.0ml):(0.2g), which obtained the best expansion volume. The graphite sheets within EG were nanoscales, rare earth nanoparticles were dispersed between holes of expandable graphite sheets. Evidently, the graphite nanosheets wrapped in the rare earth particles can be observed. It is clearly that the rare earth particles within EG were nanoscales. In addition, rare earth particles on expandable graphite were nanoscales, and the EG/CeO2 composite obtained by this process is a product with amorphous alloy structure.