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FE-SEM images of (a-b) GCF, (c-d) OGCF, and (e-f) EDA-GCF (insets of b, d, and f show the digital photographic images of GCF, OGCF, and EDA-GCF, respectively). (g-i) EDS mapping of C, N, and O, respectively, in EDA-GCF. (j) Schematic of the mechanism of controlled partial exfoliation and the preparation of OGCF and EDA-GCF.
