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(a) HAADF-STEM image of AgPd/Pt multiple twinned nanoparticles, (b–f) EDX elemental maps of nanoparticles – Pt (L, M), Ag (L), Pd (L), AgPd alloy and Overlay respectively, (g) EDX spectrum of corresponding AgPd/Pt multiply twinned nanoparticles, (h) Ag, Pd and Pt elemental profiles along the red line across the icosahedral structure (inset of h).
