fig5

Figure 5. (A) Size dependence of dispersion and surface percentage of atoms on the {111}, {100} facets and the edges between the facets of a truncated octahedral Pt particle. Reproduced with permission from^[121]. Copyright 2011, American Chemical Society. Plots of the mass and specific activities of the Pt/C (B) and the Ru/C (C) against the mean particle size. Reproduced with permission from^[23]. Copyright 2013, American Chemical Society. (D) Deconvolution of hydrogen desorption peaks into four peaks centered at 0.13 V (H1a), 0.18 V (H1b), 0.24 V (H2), and 0.32 V (H3) for Ir/C; (E) Fraction of peaks H1a, H1b, H2 and H3 among Ir/C with different particle sizes. Reproduced with permission from^[126]. Copyright 2015, American Chemical Society. (F) Geometric and electronic structures of single atoms, clusters, and nanoparticles. Reproduced with permission from^[127]. Copyright 2018, American Chemical Society. (G) Electrospray ionization mass spectrometry of Pt₆ nanoclusters (NCs); (H) Aberration-corrected HAADF-STEM image of Pt₆ NCs/C; inset: the magnified image of a Pt₆ NCs and corresponding model. Reproduced with permission from^[137]. Copyright 2022, Springer Nature. (I) Atomic structure diagram and magnified HAADF-STEM image of the RuSA/NSG. Reproduced with permission from^[142]. Copyright 2022, Springer Nature. (J) The optimized structure and atomic-resolution HAADF-STEM image of Ru-Ni/NC, in which some of Ru-Ni diatomic pairs are highlighted by orange ovals. Reproduced with permission from^[143]. Copyright 2022, AAAS.