Embedding Ag+@COFs within Pebax membrane to confer mass transport channels and facilitated transport sites for elevated desulfurization performance

doi:10.1016/j.memsci.2018.01.038

	Embedding Ag+@COFs within Pebax membrane to confer mass transport channels and facilitated transport sites for elevated desulfurization performance
	Pan, FS; Ding, H; Song, YM; Li, WD; Wu, H; Jiang, ZY; Wang, BY; Wang BY(王宝义); Cao XZ(曹兴忠); Cao, XZ
刊名	JOURNAL OF MEMBRANE SCIENCE
	2018
卷号	552 页码:1-12
关键词	Facilitated transport Hybrid membrane COFs Silver ion Gasoline desulfurization
ISSN号	0376-7388
DOI	10.1016/j.memsci.2018.01.038
文献子类	Article
英文摘要	In this study, covalent organic frameworks (COFs) are utilized as carriers to immobilize metal ions in facilitated transport membranes for organic solvent separation for the first time. SNW-1, a kind of COFs with high amount of amino groups, were loaded with Ag+ ions and then incorporated into Pebax matrix to prepare hybrid membranes. Under optimal conditions, 48.11 wt% of Ag+ was loaded onto SNW-1 through a facile approach, which greatly intensified the mass transfer of unsaturated penetrant molecules (thiophene) by pi-complexation. The channels within SNW-1 decreased the mass transport resistance and imparted the molecular sieving ability. The organic nature of SNW-1 optimized the interfacial affinity between filler and polymer, and rendered appropriate free volume properties. The membranes displayed simultaneously enhanced permeation flux and selectivity in pervaporation gasoline desulfurization. Especially, when the content of Ag+@ SNW-1 was 9 wt%, the optimum performance towards thiophene concentration of 1312 ppm under 60 degrees C, was achieved with permeation flux of 16.35 kg/(m(2) h) and enrichment factor of 6.8, which was increased by 78.5% and 30.0%, respectively, compared with pure Pebax membranes. In addition, the anti-swelling property of the membranes was improved and the membranes possessed superior long-term stability. This study demonstrates that COFs are superior carriers to immobilize metal ions within facilitated transport membrane for efficient liquid separation.
电子版国际标准刊号	1873-3123
WOS关键词	ENHANCED SEPARATION PERFORMANCE ; MIXED MATRIX MEMBRANES ; PERVAPORATION PERFORMANCE ; NANOCOMPOSITE MEMBRANES ; HYBRID MEMBRANES ; MODEL GASOLINE ; CO2 CAPTURE ; FREE-VOLUME ; SILVER ION ; POLYMER
WOS研究方向	Engineering ; Polymer Science
语种	英语
WOS记录号	WOS:000427491600001
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/285730]
专题	高能物理研究所_计算中心高能物理研究所_多学科研究中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Pan, FS,Ding, H,Song, YM,et al. Embedding Ag+@COFs within Pebax membrane to confer mass transport channels and facilitated transport sites for elevated desulfurization performance[J]. JOURNAL OF MEMBRANE SCIENCE,2018,552:1-12.
APA	Pan, FS.,Ding, H.,Song, YM.,Li, WD.,Wu, H.,...&Wang, MD.(2018).Embedding Ag+@COFs within Pebax membrane to confer mass transport channels and facilitated transport sites for elevated desulfurization performance.JOURNAL OF MEMBRANE SCIENCE,552,1-12.
MLA	Pan, FS,et al."Embedding Ag+@COFs within Pebax membrane to confer mass transport channels and facilitated transport sites for elevated desulfurization performance".JOURNAL OF MEMBRANE SCIENCE 552(2018):1-12.