Facilitated transport membranes by incorporating graphene nanosheets with high zinc ion loading for enhanced CO2 separation

doi:10.1016/j.memsci.2016.09.040

	Facilitated transport membranes by incorporating graphene nanosheets with high zinc ion loading for enhanced CO2 separation
	Wu, H; Peng, DD; Wang, SF; Tian, ZZ; Wu, XY; Wu, YZ; Xin, QP; Chen, JF; Cao, XZ; Jiang, ZY
刊名	JOURNAL OF MEMBRANE SCIENCE
	2017
卷号	522 页码:351-362
关键词	Facilitated transport membrane Hybrid membrane pi complexation Graphene nanosheets CO2 separation
ISSN号	0376-7388
DOI	10.1016/j.memsci.2016.09.040
文献子类	Article
英文摘要	In this study, a novel kind of facilitated transport membrane was prepared by incorporating zinc ion-modified graphene (GO-DA-Zn2+) nanosheets into a poly(ether-block-amide) (Pebax) matrix. Graphene oxide (GO) nanosheets were modified with zinc ion (Zn2+) by using dopamine-mediated complexation reaction. The CO2 separation properties of the facilitated transport membrane were evaluated using CO2/CH4 mixture as model system. The GO-DA-Zn2+ nanosheets played an important role in enhancing membrane performance. First, the high zinc ion loading (34.2 wt% of the nanosheets) could enhance the facilitated transport of CO2 based on pi-complexation mechanism, leading to a higher CO2 permeability and selectivity. Second, the incorporation of graphene nanosheets with high aspect ratio rendered more tortuous gas transport channels, which was favorable for hindering the penetration of CH4 with larger molecular size and thus enhancing the CO2/CH4 selectivity. Third, the fractional free volume of hybrid membrane was much elevated, also leading to higher CO2 permeability. The optimum separation properties of GO-DA-Zn2+ incorporated Pebax membranes were achieved with a CO2 permeability of 137.9 Barrer and a CO2/CH4 selectivity of 30.6, which were 49% and 78% higher than those of pristine Pebax membrane.
电子版国际标准刊号	1873-3123
WOS关键词	MIXED MATRIX MEMBRANES ; WALLED CARBON NANOTUBES ; GAS SEPARATION ; 3,4-DIHYDROXYPHENYL DERIVATIVES ; METALLODYNAMERIC MEMBRANES ; NANOCOMPOSITE MEMBRANES ; COMPOSITE MEMBRANES ; POLY(VINYL ALCOHOL) ; CO2/CH4 SEPARATION ; CAPTURE PROPERTIES
WOS研究方向	Engineering ; Polymer Science
语种	英语
WOS记录号	WOS:000387192500033
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/285114]
专题	高能物理研究所_加速器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	Wu, H,Peng, DD,Wang, SF,et al. Facilitated transport membranes by incorporating graphene nanosheets with high zinc ion loading for enhanced CO2 separation[J]. JOURNAL OF MEMBRANE SCIENCE,2017,522:351-362.
APA	Wu, H.,Peng, DD.,Wang, SF.,Tian, ZZ.,Wu, XY.,...&曹兴忠.(2017).Facilitated transport membranes by incorporating graphene nanosheets with high zinc ion loading for enhanced CO2 separation.JOURNAL OF MEMBRANE SCIENCE,522,351-362.
MLA	Wu, H,et al."Facilitated transport membranes by incorporating graphene nanosheets with high zinc ion loading for enhanced CO2 separation".JOURNAL OF MEMBRANE SCIENCE 522(2017):351-362.