Pore morphology and topology of zeolite imidazolate framework ZIF‐67 revealed by small‐angle X‐ray scattering

Abstract

The pore characterization of ZIF system using small-angle X-ray scattering (SAXS) technique is presented for the first time. The pore characterization of ZIF-67 framework structure as model system using the conventional nitrogen adsorption and SAXS methods was performed in this work. The comparison between the results obtained by two methods can provide the verification, complementary information, and error analysis to the conventional method using nitrogen atom as probe. The pore network and morphology are subjected to the topology of ZIF framework structure. The theoretical calculation of pore morphology in the unit cage of ZIF-67 structure is verified by this SAXS characterization. This SAXS study can be used as the reference of modeling pore for general ZIF systems.

Synthesis and Characterization of ZIF 67 Manganese Bimetal for Electrochemical Sensor Application

“…This XRD pattern illustrates the underlying lattice arrangement characteristic of the ZIF 67 manganese material, showcasing a structural topology match to the symmetry relationships of the sodalite (SOD) crystal framework. This suggests a successful replacement of some cobalt atoms with manganese within the metal clusters of ZIF 67, aligning with findings by Wang et al (2021) [12].…”

Recent advances in the application of zeolitic imidazolate frameworks (ZIFs) in environmental remediation: a review

“…9,13 For ZIF-67, the tetrahedral CoN 4 building units were formed by coordinating Co 2+ with nitrogen atoms of imidazole linkers, where Co 2+ was not involved in any reaction with water or hydroxide groups due to the strong coordination with four imidazolate ligands. 14 Owing to desirable physicochemical properties such as high crystallinity, permanent porosity, rich structural diversity (e.g., tunable pore size, adjustable functional groups), high specific surface area and exceptional chemical/ thermal stability (unique trait of strong nitrogen-metal bonds), ZIFs have been widely used in various fields such as energy storage, [15][16][17] separation, [18][19][20][21] catalysis, [22][23][24][25][26] and adsorption. [27][28][29] Fig.…”