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- W2907937222 abstract "The hydrophobicity of porous particles is important for the performance of mixed-matrix membranes for pervaporation separation of n-butanol aqueous solution. Here, a strategy was proposed to further enhance the hydrophobicity of ZIF-8. ZIF-8 particles were first coated by polydopamine (PDA) to create chemically reactive surface and then modified with silane coupling agents n-propyltrimethoxysilane and n-octyltriethoxysilane. The water contact angles of the obtained [email protected] and [email protected] separately increased from 132.8° to 137.3° and 151.5°, which demonstrated a remarkable enhancement in hydrophobicity. The silane-modified ZIF-8 particles were subsequently incorporated into PDMS to fabricate mixed-matrix membranes, which exhibited an improved adsorption selectivity for butanol. The best membrane with 1 wt% loading ([email protected]) exhibited a separation factor of 56 and butanol flux of 480.6 g m−2 h−1 for a 1.5 wt% butanol solution at 55 °C. The separation factor increased by 23% compared with that of a ZIF-8/PDMS membrane. Moreover, compared with those of a pure PDMS membrane, the separation factor and butanol flux increased by 34% and 85%, respectively. Thus, the strategy is an effective method to improve the PV performance of PDMS membranes for butanol separation." @default.
- W2907937222 created "2019-01-11" @default.
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- W2907937222 date "2019-05-01" @default.
- W2907937222 modified "2023-10-16" @default.
- W2907937222 title "Improving the pervaporation performance of PDMS membranes for n-butanol by incorporating silane-modified ZIF-8 particles" @default.
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- W2907937222 doi "https://doi.org/10.1016/j.seppur.2018.12.078" @default.
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