Figure 4 | Scientific Reports

Figure 4

From: Shape-Controlled Synthesis of Luminescent Hemoglobin Capped Hollow Porous Platinum Nanoclusters and their Application to Catalytic Oxygen Reduction and Cancer Imaging

Figure 4

Kinetically-controlled growth of Pt NCs. TEM and FESEM images of the PtNC porous microspheres (a–f) and PtNC hollow polyhedra (g–l) obtained by mixing 0.125 mM H2PtCl6 in a 0.11 mM Hb solution at 67 °C in the absence of NaBH4 and at 37 °C in the presence of NaBH4, respectively. (f) Corresponding dark-field FESEM image of the PtNC porous microspheres shown in (e). Scale bars: 40 nm for (a); 80 nm for (b); 150 nm for (c); 100 nm for (g); 60 nm for (h); 35 nm for (i); 2 µm for (j) and 200 nm for (d–f,k,l).

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