Hollowing out MOFs: hierarchical micro- and mesoporous MOFs with tailorable porosity via selective acid etching12. Issue 10 (21st August 2017)

• Record Type: Journal Article
• Authors: Koo, Jaehyoung; Hwang, In-Chul; Yu, Xiujun; Saha, Subhadeep; Kim, Yonghwi; Kim, Kimoon
• Is Part Of: Chemical science. Volume 8:Issue 10(2017)
• Page Start: 6799
• Page End: 6803
• Publication Date: 2017-08-21
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c7sc02886e
• Languages: English
• ISSNs: 2041-6520

Abstract

Abstract : We report a new strategy for the synthesis of robust hierarchical micro- and mesoporous MOFs from water stable MOFs via a selective acid etching process. Abstract : We report a new strategy for the synthesis of robust hierarchical micro- and mesoporous MOFs from water stable MOFs via a selective acid etching process. The process is controlled by the size-selective diffusion of acid molecules through the MOF windows. This method enables the fine-tuning of the porosity of hierarchical MOFs, allowing for the generation of well-defined mesopores with high mesopore volume. Because of the size-selective diffusion of acid molecules, the inherent crystallinity and external morphology of the resulting MOFs are well-maintained after acid treatment. This novel strategy may provide an alternative route towards the synthesis of diverse hierarchical MOFs.