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Heterostructured filler in mixed matrix membranes to coordinate physical and chemical selectivities for enhanced CO2 separation
Zhang, N; Wu, H; Li, FC; Dong, SY; Yang, LX; Ren, YX; Wu, YZ; Wu, XY; Jiang, ZY; Cao, XZ; Cao XZ(曹兴忠)
2018
发表期刊JOURNAL OF MEMBRANE SCIENCE (IF:6.035[JCR-2016],5.983[5-Year])
ISSN0376-7388
EISSN1873-3123
卷号567页码:272-280
文章类型Article
摘要Mixed matrix membranes (MMMs) hold great promise in overcoming the tradeoff between membrane permeability and selectivity. The rational design of fillers to well coordinate physical and chemical selectivities remains challenging. Here, we explore a heterostructured filler by in-situ growth of ZIF-8 on LDH surface (ZIF-8@LDH), which was then embedded into Pebax to fabricate MMMs for CO2/CH4 separation. The proximity effect of the heterostructured filler endows MMMs with superior gas separation performance compared with the control MMMs containing single filler ZIF-8, LDH and dual fillers (where ZIF-8 and LDH are separately incorporated). On one hand, ZIF-8 and abundant hydroxyl groups on LDH afford favorable affinity toward CO2, significantly enhancing the physical selectivity of CO2/CH4. On the other hand, the oriented distribution of ZIF-8 on LDH elevates CO2 concentration around LDH and increases the efficiency of CO2 facilitated transport, leading to remarkably enhanced chemical selectivity. Particularly, the optimum separation performance is achieved for MMMs containing 2 wt% of ZIF-8@LDH with a CO2 permeability of 1307 Barrer and a CO2/CH4 selectivity of 31.6. The unique attributes of heterostructured filler may be extended to fabricate a variety of MMMs for high performance molecular separations.
关键词Heterostructured filler Zeolite imidazolate framework-8 (ZIF-8) Layered double hydroxide (LDH) Mixed matrix membrane CO2 separation
DOI10.1016/j.memsci.2018.09.044
关键词[WOS]LAYERED DOUBLE HYDROXIDE ; FACILITATED TRANSPORT MEMBRANES ; CAPTURE PROPERTIES ; COMPOSITE MEMBRANES ; HYBRID MEMBRANES ; IONIC LIQUID ; ZINC ION ; PERFORMANCE ; NANOSHEETS ; FRAMEWORK
收录类别SCI
语种英语
WOS研究方向Engineering ; Polymer Science
WOS类目Engineering, Chemical ; Polymer Science
WOS记录号WOS:000446328500025
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文献类型期刊论文
条目标识符https://ir.ihep.ac.cn/handle/311005/286380
专题多学科研究中心
加速器中心
作者单位中国科学院高能物理研究所
第一作者单位中国科学院高能物理研究所
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Zhang, N,Wu, H,Li, FC,et al. Heterostructured filler in mixed matrix membranes to coordinate physical and chemical selectivities for enhanced CO2 separation[J]. JOURNAL OF MEMBRANE SCIENCE,2018,567:272-280.
APA Zhang, N.,Wu, H.,Li, FC.,Dong, SY.,Yang, LX.,...&曹兴忠.(2018).Heterostructured filler in mixed matrix membranes to coordinate physical and chemical selectivities for enhanced CO2 separation.JOURNAL OF MEMBRANE SCIENCE,567,272-280.
MLA Zhang, N,et al."Heterostructured filler in mixed matrix membranes to coordinate physical and chemical selectivities for enhanced CO2 separation".JOURNAL OF MEMBRANE SCIENCE 567(2018):272-280.
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