期刊
COMPOSITES PART B-ENGINEERING
卷 168, 期 -, 页码 406-412出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2019.03.048
关键词
Polyimide fiber; NH2-MIL-101(Cr) crystals; Paper-based filters; Filtration performance
资金
- National Natural Science Foundation of China [51803110]
- Natural Science Research Start-up Fund of Shaanxi University of Science and Technology [2016GBJ-18]
- Opening Foundation of National Demonstration Center for Experimental Light Chemistry Engineering Education [2018QGSJ02-01]
- Shaanxi Overall Planning Innovative Engineering Project of Science and Technology [2016KTCQ01-87]
- Key Scientific Research Group of Shaanxi Province [2017KCT-02]
- National Key Research and Development Plan [2017YFB0308300]
A facile route to rapidly assemble presynthesized MOF [NH2-MIL-101(Cr)] crystals onto polyimide (PI) fibers at ambient temperature was proposed in this article. Furthermore, PI@PDA@MOF fibers were used to fabricate the paper-based filters for high temperature dust removing by wet-forming process. Prior to this, dopamine was dip-coated onto the surface of inert PI fibers to active the fiber surface. Herein, MOF crystals were chemically induced using beta-cyclodextrin (beta-CD) and cetyltrimethylammonium bromide (CTAB) as surfactant assembly agents, which quickly self-assembled on the crystal surface and promoted robust chemical surface attachment onto the activated PI@PDA fibers. BET results manifested that the overall surface area of PI@PDA@MOF fibers exceeded 800 m(2)/g with assistance of MOF-cloth. Filtration performance experimental results indicated that removal efficiency of composites reached as high as 93.05 +/- 1.27% at a lower pressure drop of 57.5 Pa and a higher quality factor of 0.0464 Pa-1 for PM0.3 under the high temperature of 260 degrees C.
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