fig3

Figure 3. (A) Formation of hierarchical Zr-based MOFs with various architectures using the proposed nanoemulsion-guided assembly strategy; (B-F) TEM images of UiO-66-NH₂. (B) bowl-like particle; (C) dendritic nanosphere; (D) walnut-shaped particle; (E) crumpled nanosheet; and (F) nanodisk^[56]. Copyright 2022, Springer Nature; (G) Schematic illustration of the formation process of UiO-66 DHPNPs; (H-M) TEM images of UiO-66 nanostructures prepared with different reaction durations: (H) 11.5; (I) 15; (J) 19; (K) 22; (L) 39; and (M) 50 min^[57]. Copyright 2023, American Chemical Society. Scale bars: (B-F) 50 nm. MOFs: Metal–organic framework; TEM: transmission electron microscopy; DHPNPs: dendritic hierarchically porous MOF (UiO-66) nanoparticles.