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Hollowing out MOFs: hierarchical micro- and mesoporous MOFs with tailorable porosity via selective acid etching.


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.

SUBMITTER: Koo J 

PROVIDER: S-EPMC5643979 | biostudies-literature |

REPOSITORIES: biostudies-literature

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