Science· 2014Q1
Metal-organic framework nanosheets as building blocks for molecular sieving membranes
- 1,718citations
- Q1SCImago
- 2014year
Short summary
Ultrathin membranes made from 1-nanometer-thick metal-organic framework (MOF) nanosheets achieve high hydrogen gas (H2) permeance (up to thousands of GPU) with H2/CO2 selectivity greater than 200.
AI-generated from the title and abstract; the full text is not read.
Key points
- Preparation of 1-nanometer-thick MOF nanosheets with large lateral area and high crystallinity.
- Development of ultrathin molecular sieve membranes using these MOF nanosheets.
- Achieved H2 permeance > 1000 GPU and H2/CO2 selectivity > 200.
- Discovered an unusual proportional relationship between H2 permeance and H2 selectivity.
- Simultaneous increase in permeance and selectivity achieved by suppressing lamellar stacking.
AI-generated from the title and abstract; the full text is not read.
Abstract
Layered metal-organic frameworks would be a diverse source of crystalline sheets with nanometer thickness for molecular sieving if they could be exfoliated, but there is a challenge in retaining the morphological and structural integrity. We report the preparation of 1-nanometer-thick sheets with large lateral area and high crystallinity from layered MOFs. They are used as building blocks for ultrathin molecular sieve membranes, which achieve hydrogen gas (H2) permeance of up to several thousand gas permeation units (GPUs) with H2/CO2 selectivity greater than 200. We found an unusual proportional relationship between H2 permeance and H2 selectivity for the membranes, and achieved a simultaneous increase in both permeance and selectivity by suppressing lamellar stacking of the nanosheets.
The authors' abstract, as published at the source. Science, 2014 · DOI ↗
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Field: Inorganic Chemistry
Inorganic ChemistryChemistry