Sorption-enhanced thin film composites with metal-organic polyhedral nanocages for CO2 separation

نویسندگان

چکیده

The atom transfer radical polymerization (ATRP)-based continuous assembly of polymers (CAP) is a promising approach for fabricating thin film composite (TFC) membranes high flux. Here, we report the preparation CO2-selective TFC mixed matrix (MMMs) by incorporating different amounts [Cu24(m-bdc)24(EG)3(DMF)12] (EG3-MOP) nanocages (e.g., 2.5, 5, and 10 wt%) as CO2-philic fillers in poly(poly(ethylene glycol) dimethacrylate (PEG9DMA) via ATRP-based CAP technique. EG3-MOP are homogeneously distributed PEG9DMA with good compatibility between them at up to 5 wt% due hydrophilic interactions triethylene oxide tails PEG matrix. Additionally, both CO2 permeance CO2/N2 selectivity increased increasing contents gradual increase solubility because favorable interaction unsaturated Cu(II) sites CO2. In particular, EG3-MOP/PEG9DMA (5/95 wt/wt) TFC-MMM enhanced permselectivity relative those pristine membrane 45 50%, respectively, attaining 448 GPU 30. addition, it exhibited separation performance under equimolar gas conditions 35 °C, further supporting that our TFC-MMMs fabricated technique attractive separation.

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ژورنال

عنوان ژورنال: Journal of Membrane Science

سال: 2021

ISSN: ['1873-3123', '0376-7388']

DOI: https://doi.org/10.1016/j.memsci.2020.118826