Bimetallic metal-organic frameworks nanocages as multi-functional fillers for water-selective membranes

doi:10.1016/j.memsci.2017.09.056

	Bimetallic metal-organic frameworks nanocages as multi-functional fillers for water-selective membranes
	Pan, FS; Cheng, XX; Jiang, ZY; Cheng, XP; Guo, S; Tang, L; Yang, H; Wu, H; Zhang, P; Cao, XZ
刊名	JOURNAL OF MEMBRANE SCIENCE
	2018
卷号	545 页码:19-28
关键词	Bimetallic metal-organic frameworks Iron ion Nanocage Hybrid membrane Water-selective permeation
ISSN号	0376-7388
DOI	10.1016/j.memsci.2017.09.056
文献子类	Article
英文摘要	Although metal-organic frameworks (MOFs) with well-defined regular and porous structure have emerged as a family of nanoporous building blocks, the great potential of MOFs as multi-functional fillers for hybrid membranes deserves in-depth exploitation. In this study, bimetallic MOF nanocages, Fe-III-HMOF-5, were prepared and incorporated into sodium alginate (SA) matrix to fabricate water-selective nanohybrid membranes. Introduction of Fe-III ions into MOF-5 creates more coordinatively unsaturated sites, which leads to preferential dissolution of water molecules over ethanol molecules, thus elevating the solubility selectivity. The hollow structure of FeIII-HMOF-5 ensures the free diffusion of water molecules. The synergistic regulation of chemical composition and physical structure of MOFs endows the hybrid membranes with remarkably elevated separation factor and permeation flux. Taking dehydration of 90 wt% ethanol aqueous solution as model system, the hybrid membrane containing FeIII-HMOF-5 exhibits the highest separation performance with separation factor of 3423 and permeation flux of 1540 g/m(2) h, much higher than those for pure SA membrane and the hybrid membranes incorporating hollow MOF-5 (HMOF-5) and MOF-5. Moreover, the hybrid membranes containing FeIII-HMOF-5 display remarkably superior physicochemical stabilities and long-term operation stability. This study demonstrates a promising prospect of heterometallic hollow MOFs as multi-functional fillers in high-performance hybrid membranes.
电子版国际标准刊号	1873-3123
WOS关键词	MIXED-MATRIX MEMBRANES ; COMPOSITE MEMBRANES ; SODIUM ALGINATE ; PERVAPORATION PERFORMANCE ; SEPARATION PERFORMANCE ; CATALYTIC-PROPERTIES ; ETHANOL DEHYDRATION ; CARBON NANOTUBES ; HYBRID MEMBRANE ; STABILITY
WOS研究方向	Engineering ; Polymer Science
语种	英语
WOS记录号	WOS:000413270200003
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/285490]
专题	高能物理研究所_实验物理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,Cheng, XX,Jiang, ZY,et al. Bimetallic metal-organic frameworks nanocages as multi-functional fillers for water-selective membranes[J]. JOURNAL OF MEMBRANE SCIENCE,2018,545:19-28.
APA	Pan, FS.,Cheng, XX.,Jiang, ZY.,Cheng, XP.,Guo, S.,...&王宝义.(2018).Bimetallic metal-organic frameworks nanocages as multi-functional fillers for water-selective membranes.JOURNAL OF MEMBRANE SCIENCE,545,19-28.
MLA	Pan, FS,et al."Bimetallic metal-organic frameworks nanocages as multi-functional fillers for water-selective membranes".JOURNAL OF MEMBRANE SCIENCE 545(2018):19-28.