614983.fig.003a
(a)
614983.fig.003b
(b)
614983.fig.003c
(c)
Figure 3: TEM images of the PS/Nb-TiO2 (a), Pt-Ru@Nb-TiO2-CS (b), and Pt-Ru@Nb-TiO2 (c) prepared by Method 2 in Scheme 1.