期刊
MICROPOROUS AND MESOPOROUS MATERIALS
卷 335, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.micromeso.2022.111810
关键词
SNW-1; Hybrid membrane; Chitosan; Ethanol/water pervaporation
类别
资金
- National Natural Science Foundation of China [22078235, 22008176]
- China Postdoctoral Science Foundation [2019M661022, 2021T140509]
Covalent organic frameworks have been used as membrane fillers for liquid mixture separation due to their unique structure. A melamine-based hybrid membrane was prepared using a facile dipcoating-wiping method, which showed enhanced hydrophilicity and stability, and exhibited excellent separation performance for ethanol/water pervaporation.
Covalent organic frameworks recently were utilized as membrane fillers for effective liquid mixture separation due to their intriguing structure. Though a facile dipcoating-wiping method, a melamine-based hybrid membrane was prepared where Chitosan (CS) was combined with SNW-1 (Schiff base network-1) on the surface of alpha-Al2O3 support followed by crosslinking with calcium ions, a dense SNW-1/CS layer with thickness of 550 nm was successfully fabricated for ethanol/water pervaporation. The hydrophilicity of melamine-based membranes surface was enhanced by SNW-1 incorporation with improved anti-swelling property and thermal stability. The porous structure of SNW-1 offered free volume and fast channels for water transport. Consequently, the melamine-based membranes showed long-term stability and excellent separation factor of 373 with high permeance flux of 2.8 kg/(m(2).h).
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