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Manipulation of the noble‐metal aerogels. a) The ligament size of gold aerogels with respect to the presence of specific salts during the freeze–thaw process. b),c) EDX mappings of b) Au‐Pd and c) Au‐Pt aerogels. d)–i) TEM images of NMAs with different compositions, d) Pd, e) Rh, f) Au‐Ag, g) Au‐Pd, h) Au‐Pt, and i) Au‐Rh. Insets are low‐magnification TEM images, reflecting the closely packed morphologies.
