Fig. 4
BF-TEM images of Au@Pt core–shell NPs synthesized with ultrasonication for (a) 2 h, (b) 4 h, (c) 24 h, along with (d) the correlation between NP size and reaction period.
Fig. 4 | Scientific Reports
BF-TEM images of Au@Pt core–shell NPs synthesized with ultrasonication for (a) 2 h, (b) 4 h, (c) 24 h, along with (d) the correlation between NP size and reaction period.
