Fig. 1. Schematic diagram of (a) synthesis of graphene nanosheets by thermal CVD system, (b) growth of tin dioxide nanostructures on graphene nanosheets by two-zone thermal CVD system, and (c) procedure of direct growth of SnO2 nanostructures on graphene nanosheets.
Fig. 4. FE-SEM images of as-grown SnO2 nanostructures on (a) ~ (c) chemically synthesized graphene nanosheets and (d) SiO2(300 nm)/Si substrate. The magnification is (a) 10,000x, (b) & (d) 100,000x and (c) 300,000x, respectively.
Fig. 2. (a) Raman spectrum, (b) and (c) Raman mapping images of as-synthesized graphene nanosheets before SnO2 growth. (b) Raman mapping image of I2D/IG peak and (c) Raman mapping image of ID peak.
Fig. 3. (a) Raman spectrum, (b) and (c) Raman mapping image of as-grown SnO2 nanostructures on graphene. (b) Raman mapping image of I2D/IG peak and (c) Raman mapping image of ID peak.
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