Fig. 2: Schematic illustration of the synthesis procedures for the Zn-SACs with diverse nanostructures.

The monoliths of densely arranged polystyrene (PS) microspheres are used as the template for the preparation of OM-ZIF-8 single crystals. Zn1/h-OPNC900 and Zn1/h-OPNC exhibit similar hierarchically ordered open superstructures, while Zn1/OPNC features an ordered open superstructure, and Zn1/f-PNC consists of thin porous nanosheets.