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A comparative study on few-layer graphene production by exfoliation of different starting materials in a low boiling point solvent

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Academic year: 2021

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Fig. 1. FEG-SEM micrographs of (a), (b) as received expandable graphite flakes, (c) EG powder prepared by abrupt heating of expandable graphite at 900 °C for 10 s
Fig. 2 (b) shows the concentration vs. sonication time plot of the SEFG-IPA dispersions (centrifuged at 500 rpm) where the error bars represent the standard deviation calculated from at least three measurements
Fig. 3. FEG-SEM micrographs of (a) SEFG, (b) SEFG-IPA-90 min, (c) PA, and (d) PA-IPA-90 min.
Fig. 8 (a) shows the Raman spectra of the thin films prepared from the SEFG starting powder and its IPA-based dispersion (SEFG-IPA-90 m)
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