fig1
Figure 1. SEM images of (A) trapezohedral (TPH) Pt NCs; (B) octahedral (OTH) Pt NCs; and (C) cubic Pt NCs. The inset presents high magnification SEM image, size histogram and atomic model of the facet. (D) Cyclic voltammograms of the TPH, OTH, and cubic Pt NCs recorded in 0.1 M H2SO4 at 50 mV s-1.