Fig. 4. Particle size distribution of (A) Pt0.68_Si0.1/CH2 and (B) Pt0.89Ga1.00_Si1.64/CH2. Representative high-resolution HAADF-STEM images of (C) Pt0.68_Si0.1/CH2 and (D) Pt0.89Ga1.00_Si1.64/CH2. Enlarged view of a single (E) Pt and (F) PtGa nanoparticle (obtained from red square regions in (C) and (D)). Insets in (E) and (F) show the fast Fourier transforms of a crystalline Pt nanoparticle viewed along the [110] zone-axis and an amorphous, alloyed PtGa nanoparticle, respectively.
