Figure 2.

TGA result, Raman spectra, and XRD pattern of the graphene flakes. The TGA result (a), Raman spectra (b) and XRD pattern (c) of the graphene flakes obtained from the supernatant, sonication, and sediment.

Mohammed et al. Nanoscale Research Letters 2012 7:302   doi:10.1186/1556-276X-7-302
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