Charged nanochannels endow COF membrane with weakly concentration-dependent methanol permeability

doi:10.1016/j.memsci.2021.120186

CAS OpenIR

	Charged nanochannels endow COF membrane with weakly concentration-dependent methanol permeability
	Fan, Chunyang 1,2; Cao, Li 1,2; Yang, Chao 1,2; Xiao, Qianxiang 7; You, Xinda 1,2; Wang, Xiaoyao 1,2; Kong, Yan 1,2; Wu, Hong 1,2,3; Liu, Yawei 6; Jiang, Zhongyi 1,2,4,5
	2022-03-05
Source Publication	JOURNAL OF MEMBRANE SCIENCE
ISSN	0376-7388
Volume	645 Pages:10
Abstract	Covalent organic frameworks (COFs) with long-range ordered, rigid, and tailor-made nanochannels hold great promise for energy-related applications. Here, we fabricate COF membranes with one-dimensional charged nanochannels using ionic COF nanosheets decorated with sulfonic acid groups. The free-standing and robust COF membrane exhibits enhanced proton conductivity and suppressed methanol permeability compared to the benchmark Nafion membrane. More interestingly, the methanol permeability of the COF membrane remains almost constant in a wide range of methanol concentrations (5.35 x 10(-7) cm(2) s(-1) for the 2 M methanol/water mixture and 5.44 x 10(-7) cm(2 & nbsp;& nbsp;)s(-1) for the neat methanol). All-atomistic dynamics simulations indicate that the diffusio-osmotic effect arising from the charged nanochannels can account for the low and nearly constant methanol permeability of the COF membranes. These findings suggest that the ionic COF membranes can find potential applications in direct methanol fuel cell with high methanol concentrations, and meanwhile shed light on the mass transport mechanism in the charged, rigid and ordered nanochannels.
Keyword	Covalent organic framework Charged nanochannel Molecular dynamics simulation Proton exchange membrane Methanol permeability
DOI	10.1016/j.memsci.2021.120186
Language	英语
WOS Keyword	COVALENT ORGANIC FRAMEWORKS ; POLYMER ELECTROLYTE MEMBRANES ; PROTON CONDUCTIVITY ; ION-TRANSPORT
Funding Project	National Natural Science Foundation of China[U20B2024] ; National Natural Science Foundation of China[21878215] ; National Natural Science Foundation of China[21621004]
WOS Research Area	Engineering ; Polymer Science
WOS Subject	Engineering, Chemical ; Polymer Science
Funding Organization	National Natural Science Foundation of China
WOS ID	WOS:000799054600003
Publisher	ELSEVIER
Citation statistics
Document Type	期刊论文
Identifier	http://ir.ipe.ac.cn/handle/122111/53488
Collection	中国科学院过程工程研究所
Corresponding Author	Wu, Hong; Liu, Yawei; Jiang, Zhongyi
Affiliation	1.Tianjin Univ, Sch Chem Engn & Technol, Key Lab Green Chem Technol, Minist Educ, Tianjin 300072, Peoples R China 2.Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300072, Peoples R China 3.Tianjin Univ, Tianjin Key Lab Membrane Sci & Desalinat Technol, Tianjin 300072, Peoples R China 4.Natl Univ Singapore, Joint Sch, Binhai New City 350207, Fujian, Peoples R China 5.Tianjin Univ, Int Campus, Binhai New City 350207, Fujian, Peoples R China 6.Chinese Acad Sci, Inst Proc Engn, Beijing Key Lab Ion Liquids Clean Proc, CAS Key Lab Green Proc & Engn,State Key Lab Multi, Beijing 100190, Peoples R China 7.Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Peoples R China
Recommended Citation GB/T 7714	Fan, Chunyang,Cao, Li,Yang, Chao,et al. Charged nanochannels endow COF membrane with weakly concentration-dependent methanol permeability[J]. JOURNAL OF MEMBRANE SCIENCE,2022,645:10.
APA	Fan, Chunyang.,Cao, Li.,Yang, Chao.,Xiao, Qianxiang.,You, Xinda.,...&Jiang, Zhongyi.(2022).Charged nanochannels endow COF membrane with weakly concentration-dependent methanol permeability.JOURNAL OF MEMBRANE SCIENCE,645,10.
MLA	Fan, Chunyang,et al."Charged nanochannels endow COF membrane with weakly concentration-dependent methanol permeability".JOURNAL OF MEMBRANE SCIENCE 645(2022):10.

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