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STEM‐HAADF image of biosynthesized nanoparticles from (A–D) Pd/Ag‐bearing solution and (E–H) Pd/Au‐bearing solution. Corresponding EDX line scans are shown to the right of the image. Pd is shown as the blue dashed line, Ag as the orange solid line and Au as the red solid line. The y‐axis represents counts, and values on the x‐axis are arbitrary units of distance.
