Hierarchical pore architectures from 2D covalent organic nanosheets for efficient water/alcohol separation

doi:10.1016/j.memsci.2018.05.036

	Hierarchical pore architectures from 2D covalent organic nanosheets for efficient water/alcohol separation
	Cheng, XX; Cao XZ(曹兴忠); Jiang, ZY; Liu, GH; Pan, FS; Cao, XZ; Yang, H; Wu, H; Xu, Z; Mu, BW
刊名	JOURNAL OF MEMBRANE SCIENCE
	2018
卷号	561 页码:79-88
关键词	Covalent organic nanosheets Hybrid membranes Hierarchical pore architectures Water/alcohol separation Water-selective permeation
ISSN号	0376-7388
DOI	10.1016/j.memsci.2018.05.036
文献子类	Article
英文摘要	By mimicking the respiratory system in organisms, hybrid membranes with hierarchical pore structures were constructed by covalent organic nanosheets (CONs) and poly(ether sulfone) (PES). Two kinds of amide modified CONs, TpPa-1 and TpBD, with different pore sizes were facilely synthesized by the Schiff base reactions of 1,3,5-triformylphloroglucinol (Tp) with p-phenylenediamine (Pa-1) and benzidine (BD), and separately incorporated into the PES. The hierarchical pore structures within the hybrid membranes including micropores (0.278-0.289 nm), mesopores (2-50 nm) and macropores (1-10 mu m) were generated by the addition of CONs. The microporous structures in top dense layer with high separation accuracy arose from CONs and PES chains. The mesoporous structures and the macroporous structures in porous sublayer with ultralow resistance arose from sponge-like pores and finger-like pores of PES, respectively. A smooth transition of micro-, meso-and macroporous structures rendered the membranes desired level of separation efficiency as well as high stability. Remarkably, the hybrid membrane consisting of TpPa-1 CONs (8 wt%) showed a high water/ethanol separation factor of 1150, while the membrane consisting of TpBD CONs (8 wt%) exhibited a high water/n-butanol separation factor of 2735. The permeation fluxes for both separation systems were higher than 2.5 kgm(-2) h(-1). The links between hierarchical architectures and performance in membranes could facilitate the rational design of novel membrane architectures with advanced properties.
电子版国际标准刊号	1873-3123
WOS关键词	MIXED MATRIX MEMBRANES ; POTENTIAL APPLICATIONS ; WATER-ADSORPTION ; HYBRID MEMBRANE ; GRAPHENE OXIDES ; GAS SEPARATION ; FRAMEWORKS ; CRYSTALLINE ; PERVAPORATION ; METAMATERIALS
WOS研究方向	Engineering ; Polymer Science
语种	英语
WOS记录号	WOS:000434713700008
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/285995]
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	Cheng, XX,Cao XZ,Jiang, ZY,et al. Hierarchical pore architectures from 2D covalent organic nanosheets for efficient water/alcohol separation[J]. JOURNAL OF MEMBRANE SCIENCE,2018,561:79-88.
APA	Cheng, XX.,曹兴忠.,Jiang, ZY.,Liu, GH.,Pan, FS.,...&Lin, ZX.(2018).Hierarchical pore architectures from 2D covalent organic nanosheets for efficient water/alcohol separation.JOURNAL OF MEMBRANE SCIENCE,561,79-88.
MLA	Cheng, XX,et al."Hierarchical pore architectures from 2D covalent organic nanosheets for efficient water/alcohol separation".JOURNAL OF MEMBRANE SCIENCE 561(2018):79-88.