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Embedding Ag+@COFs within Pebax membrane to confer mass transport channels and facilitated transport sites for elevated desulfurization performance
Pan, FS; Wang, MD; Ding, H; Song, YM; Li, WD; Wu, H; Jiang, ZY; Wang, BY; Cao, XZ; Wang BY(王宝义); Cao XZ(曹兴忠)
2018
Source PublicationJOURNAL OF MEMBRANE SCIENCE
ISSN0376-7388
EISSN1873-3123
Volume552Pages:1-12
SubtypeArticle
AbstractIn 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.
KeywordFacilitated transport Hybrid membrane COFs Silver ion Gasoline desulfurization
DOI10.1016/j.memsci.2018.01.038
WOS KeywordENHANCED SEPARATION PERFORMANCE ; MIXED MATRIX MEMBRANES ; PERVAPORATION PERFORMANCE ; NANOCOMPOSITE MEMBRANES ; HYBRID MEMBRANES ; MODEL GASOLINE ; CO2 CAPTURE ; FREE-VOLUME ; SILVER ION ; POLYMER
Indexed BySCI ; EI
Language英语
WOS Research AreaEngineering ; Polymer Science
WOS SubjectEngineering, Chemical ; Polymer Science
WOS IDWOS:000427491600001
EI Accession Number20180604773264
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/285730
Collection计算中心
多学科研究中心
Affiliation中国科学院高能物理研究所
First Author AffilicationInstitute of High Energy
Recommended Citation
GB/T 7714
Pan, FS,Wang, MD,Ding, H,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.,Wang, MD.,Ding, H.,Song, YM.,Li, WD.,...&曹兴忠.(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.
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