fig2
![Hierarchical metal–organic framework nanoarchitectures for catalysis](https://image.oaes.cc/dabfd0b5-7622-4489-94c0-359ae8103a85/cs4042.fig.2.jpg)
Figure 2. (A) Formation process of HP-MOF ZnICA monoliths; (B and C) SEM images and (D and E) TEM images of HP-MOF ZnICA monoliths[51]. Copyright 2023, Wiley-VCH; (F) Schematic illustration of the formation mechanism of ordered large-pore Ce-HMMOF-P and Ce-HMMOF-F; (G and I) SEM and (H and J) TEM images of (G and H) Ce-HMMOF-P and (I and J) Ce-HMMOF-F[49]. Copyright 2020, Wiley-VCH. HP-MOF: hierarchical porous metal–organic framework; ICA: 2-imidazolecarboxaldehyde; SEM: scanning electron microscopy; TEM: transmission electron microscopy.