期刊
SEPARATION AND PURIFICATION TECHNOLOGY
卷 256, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.seppur.2020.117802
关键词
UiO-66-X nanoparticle; Functional ligand; Structure-property relationship; Trade-off effect; Pervaporation
资金
- National Natural Science Foundation of China [21464012]
- Shihezi university [SHYLYB201806]
- funds for innovation and development of Shihezi university [CXFZ201909]
- Program for Changjiang Scholars and Innovative Research Team in University [IRT_15R46]
- Bingtuan Innovation Team in Key Areas [2015BD003]
The study investigated the effects of MOFs with different functional groups on membrane separation selectivity. Experimental results showed that UiO-66-X performed optimally in ethanol dehydration, and PV performance could be adjusted by modifying the type and quantity of functional groups carried by nanoparticles.
In order to investigate the effects of MOFs by altering ligands with various functional groups on separation selection in pervaporation dehydration, three hydrophilic UiO-66-X nanoparticles were respectively synthesized and blended into poly (vinyl alcohol) matrix to fabricate water-selective membrane for ethanol dehydration via PV technology. Both the experimental and molecular simulation results confirmed the UiO-66-X counterbalancing factors of enhanced polarity and suitable pore size gave rise to the optimal performance in ethanol dehydration. The PV performances could be tuned by the type and quantity of functional groups carried by UiO-66-X nanoparticles. As a result, the pore aperture of UiO-66-(COOH)(2) nanoparticles provided continuous channel for water diffusion, and water molecules could also be activated attributed to the strong interaction between the UiO-66-(COOH)(2) nanoparticles and water molecules which enhanced the penetration and diffusion of water molecular in hybrid membrane to increase the water flux. The optimized hybrid membranes with UiO-66-(COOH)(2) loading of 8 wt% exhibited the total flux of 979 +/- 7 g/(m(2).h) and a separation factor of 2084 +/- 21.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据