2012•Advanced materials researchRequires access

Preparation and Characterization of Graphene by the Oxidation Reduction Method

Yin Long, Jian Fang Wang, Ya Lv, Tao Cheng, Lin Xia, Hui Zhu

Abstract

We prepared graphite oxide (GO) from natural graphite by the modified Hummers method. Then graphene was prepared by ultrasonically dispersing GO in the presence of hydrazine hydrate. The samples were characterized by FTIR, Raman, Scanning electron microscope (SEM) and Transmission electron microscope (TEM). The results suggest that the graphite is oxidized to covalent bond-type graphite intercalation compounds with various oxygen functional groups (C=O, C-OH, -COOH and C-O-C). Results show that the functional groups on graphite oxide surface are mostly removed by hydrazine hydrate and graphene presents translucent slide with curly edge.

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Key concepts: Graphene, Graphite, Graphite oxide, Hydrazine (antidepressant), Materials science, Scanning electron microscope, Raman spectroscopy, Intercalation (chemistry)