期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 8, 期 33, 页码 17212-17218出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0ta02412k
关键词
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资金
- National Natural Science Foundation of China [21776003]
- Beijing Natural Science Foundation [2182004]
- Beijing Nova Program [Z181100006218079]
- Beijing Municipal Natural Science Foundation
- Beijing Natural Science Foundation Committee
- Beijing Education Committee [KZ201910005001]
- Importation and Development of High-Caliber Talents Project of Beijing Municipal Institutions [CITTCD20170305, CITTCD201904014]
- European Research Council (ERC) [NAPOLI-639720]
- Swedish Research Council [2018-05351]
- Verband der Chemischen Industrie e.V. (VCI) in Germany [15126]
- Wallenberg Academy Fellow program in Sweden [KAW 2017.0166]
- Stockholm University Strategic Fund [SU FV-2.1.1-005]
A defect-free, robust and selective barrier is essential for manufacturing membranes with targeted high permeability and selectivity. Here we report a new route to engineering a separation composite membrane by confining both channels in nanoscale metal organic frameworks (MOFs) and charges in a polyelectrolyte in the inner space of a porous supportviaa counter-diffusion method. A simple thermal annealing treatment of the interface between the MOF, polymer and support favorably reduced voids inside this nano-confinement environment. As this composite membrane combines both the support and barrier as one, it minimizes mass transfer resistance of water molecules. In a separation test, it readily achieved the state-of-the-art permeance. This simple chemical approach to upgrade membrane structures will offer wide opportunities in separation devices.
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