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Nano Lett. 2020 Mar 30. doi: 10.1021/acs.nanolett.0c00344. [Epub ahead of print]

Precisely Patterned Nanostrand Surface of Cucurbituril[n]-Based Nanofiltration Membranes for Effective Alcohol-Water Condensation.

Tang MJ1,2,3, Liu ML1,2,3, Wang DA1,2,3, Shao DD1,2,3, Wang HJ1,2,3, Cui Z1,2,3, Cao XL1,2,3, Sun SP1,2,3.

Author information

1
State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing 211816, China.
2
Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing 210023 China.
3
College of Chemical Engineering, Nanjing Tech University, Nanjing 211800, China.

Abstract

Low concentration alcohols produced by state-of-the-art biological fermentation restrict subsequent purification processes for chemical, pharmaceutical, biofuel, and other applications. Herein, a rarely reported cucurbituril[n] (n = 6, 8) is employed to pattern the thin-film composite membranes with controllable and quantifiable nanostrand structures through a host-guest strategy. The resulting nanofiltration membrane with such morphology is the first report that exhibits excellent separation performance for isopropyl alcohol (IPA) and water, condensing the initial 0.5 wt % IPA aqueous solution to 9.0 wt %. This not only provides a novel strategy for patterning nanostructural morphology but also makes nanofiltration membranes promising for alcohol condensation in the biological fermentation industry that may reduce energy consumption and postprocessing costs.

KEYWORDS:

Cucurbituril[n]; biological fermentation; host−guest strategy; nanostrand structures

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