Water-Etched Approach to Hierarchically Porous Metal-Organic Frameworks with High Stability

Jin-Wang Liu; Si-Ya Lv; Yun-Nan Gong; Xue-Lian Lin; Jian-Hua Mei; Di-Chang Zhong; Tong-Bu Lu

doi:10.1021/acs.inorgchem.3c01351

Water-Etched Approach to Hierarchically Porous Metal-Organic Frameworks with High Stability

Inorg Chem. 2023 Jul 24;62(29):11611-11617. doi: 10.1021/acs.inorgchem.3c01351. Epub 2023 Jul 10.

Authors

Jin-Wang Liu^{1

2}, Si-Ya Lv¹, Yun-Nan Gong¹, Xue-Lian Lin², Jian-Hua Mei¹, Di-Chang Zhong¹, Tong-Bu Lu¹

Affiliations

¹ Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science and Engineering, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, China.
² Key Laboratory of Jiangxi University for Functional Material Chemistry, College of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China.

PMID: 37428154
DOI: 10.1021/acs.inorgchem.3c01351

Abstract

The development of hierarchically porous metal-organic frameworks (MOFs) with high stability is desirable to expand their applications but remains challenging. Herein, an anionic sodalite-type microporous MOF (Yb-TTCA; TTCA^3- = triphenylene-2,6,10-tricarboxylate) was synthesized, which shows outstanding catalytic activities for the cycloaddition of CO₂ into cyclic carbonates. Moreover, the microporous Yb-TTCA can be transformed into a hierarchical micro- and mesoporous Yb-TTCA by water treatment with the mesopore sizes of 2 to 12 nm. The hierarchically porous Yb-TTCA (HP-Yb-TTCA) not only exhibits a high thermal stability up to 500 °C but also shows a high chemical stability in aqueous solutions with pH values ranging from 2 to 12. In addition, the HP-Yb-TTCA displays enhanced performance for the removal of organic dyes in comparison with microporous Yb-TTCA. This work provides a facile way to construct hierarchically porous MOF materials.