Fig. 9. HAADF-STEM images of (a) 1 wt% Pt/γ-Al₂O₃ and (b) 10 wt% Pt/γ-Al₂O₃. The insets in Fig. 8b showed the presence of (c) atomically dispersed Pt and (d) Pt cluster/nanoparticles. This figure has been adapted/reproduced from ref. 107 with permission from American Association for the Advancement of Science, copyright 2009.