Fig. 2: Synthesis and characterizations of type 2 p-ANHs.

A Schematic illustration of the selective growth of mPDA nanoplates on {110} facets of TRD ZIF-8. B SEM and C HAADF-STEM images of type 2 p-ANHs. D TEM images of a single particle taken from different perspectives, and the corresponding SAED patterns taken from an entire nanoparticle along [010] zone axis. E EDX elemental mapping of type 2 p-ANHs. F HAADF-STEM images of the hollow cubical skeletons of mPDA. Scale bars: 500 nm for B, 500 nm for C, 100 nm for D, 200 nm for E, 200 nm for F.