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. Author manuscript; available in PMC: 2021 Jun 2.
Published in final edited form as: Adv Funct Mater. 2018 Jun 5;28(31):1800002. doi: 10.1002/adfm.201800002

Figure 2.

Figure 2.

Scanning Electron Microscope Images of PtNPs on Graphene. (a)-(c) show SEM images of PtNPs electrodeposited on graphene, the scale bar for these three panels is 1 μm. PtNPs cover 14.65%, 67.27%, and 88.22% of the graphene surface for 5, 20, 50 seconds depositions respectively. (d)-(e) show SEM images at a higher magnification to point out the size and shape of the PtNPs. The size of PtNP is less than 100 nm for 5 seconds deposition, 100–200 nm for 20 seconds, and above 250 nm for 50 seconds. Further, the surface roughness of the PtNPs also increases with deposition time.