193510.fig.004a
(a)
193510.fig.004b
(b)
193510.fig.004c
(c)
193510.fig.004d
(d)
193510.fig.004e
(e)
193510.fig.004f
(f)
193510.fig.004g
(g)
Figure 4: TEM images of m-MWNTs@Pt: low-resolution images ((a) and (b)), high-resolution images of the side walls of MWNTs (c), Pt nanoparticles (d), and Fe3O4 nanoparticles (e). The size distribution analysis of Pt nanoparticles (f) and Fe3O4 nanoparticles (g) of m-MWNTs@Pt.