Fig. 6

(a) High-resolution TEM images of NPs synthesized after a reaction period of 2 h, and (b–d) slightly magnified images of the interfacial regions between the Pt granules and the Au core.

(a) High-resolution TEM images of NPs synthesized after a reaction period of 2 h, and (b–d) slightly magnified images of the interfacial regions between the Pt granules and the Au core.