Fig. 4. Typical examples of various trimetallic Pd-based MNSs. (a, c, e and g) TEM images and (b, d, f and h) the corresponding HAADF-STEM mapping of (a and b) PdAgPt, (c and d) PdAgFe, (e and f) PdPtCu, and (g and h) PdCuRu MNSs.
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