Journal
MATERIALS LETTERS
Volume 64, Issue 20, Pages 2236-2239Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2010.06.058
Keywords
Graphene; Nanomaterials; Atomic force microscopy; XRD; Functionalization; Reduction
Funding
- National Research Foundation of Singapore [RF2007EWT-CERP01-0420]
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Octadecane-functionalized graphene (OD-G) soluble in organic solvents was produced by combining the Hummers process for graphite oxidation and a simultaneous ether-functionalization and reduction approach with 1-bromooctadecane in pyridine and dimethylformamide (DMF). The exfoliated OD-Gs were testified to be monolayer sheets by transmission electron microscope (TEM) and atomic force microscopy (AFM). The functionalization with octadecane (OD) groups and the effective deoxygenation of graphene oxide (GO) were confirmed by Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and thermo-gravimetric analysis (TGA). It is proved that the effective reduction and functionalization of GO could be simultaneously completed during the refluxing process. The functionalization with OD groups can effectively prevent the aggregation of GO during the reduction. (C) 2010 Elsevier B.V. All rights reserved.
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