Linking defects, hierarchical porosity generation and desalination performance in metal-organic frameworks.

ABSTRACT: Composite membranes with defective metal-organic frameworks (MOFs) connect the emerging fields of MOF topological modification, MOF-polymer interfacial engineering and composite material functionalization. Although defective MOFs can be fabricated via thermal or chemical treatment, the relationship between hierarchical MOF structure and their performance in a polymeric membrane matrix has so far not been investigated. Here we show how a modulator fumarate-based MIL-53(Al) microwave synthesis process results in defective MOFs. This ligand replacement process leads to materials with hierarchical porosity, which creates a higher mesopore volume and Brønsted acidity without compromising the crystalline structure and pH stability. Compared with stoichiometric ratios, increasing the react

SUBMITTER: Liang W 

PROVIDER: S-EPMC5934739 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature