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Up: Fabrication of Fe2O3/CQDs nanocomposites via the hydrothermal process, which photographs illustrate; (i) aqueous CQDs dispersion, (ii) solution comprising CQDs, (NH2)2CO, and, FeCl3, and (iii) final product. Down: (a) SEM image of Fe2O3 NPs, (b) (HR) TEM images of CQDs, (c & d) SEM and TEM images of Fe2O3/CQDs nanocomposites. Reproduced with permission from Ref. (Zhang et al., 2011).
