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(???????)Polyimide/ZIFs mixed matrix membranes with tunable interfacial interaction for efficient gas separation

Liu, Yan1; Xie, Wei2; Liang, Shuang2; Li, Xingxun1; Fan, Yanfang1; Luo, Shuangjiang2
2022-03-15
Source PublicationJOURNAL OF MEMBRANE SCIENCE
ISSN0376-7388
Volume646Pages:10
AbstractManipulating favorable interfacial microstructure is crucial to rationally design a high-performance mixed matrix membrane with defect-free interface. We describe herein an efficient pathway to finely tune the interfacial adhesion through balancing the metal organic frameworks and polymer functionality. The varied number of hydrogen bonds are established involving the CHO groups in hybrid ZIF-8-90(x) fillers with varied carboxaldehyde-2-imidazole linker contents and 6FDA-DAM:DABA copolyimides having adjustable COOH groups concentrations, thereby precisely controlling the membrane interfacial bonding behavior. As expected, the gas selectivity of the resulting membranes is gradually enhanced with increasing carboxaldehyde-2-imidazole linker substitution ratio in ZIF-8-90(x), mainly contributed by significant improvements in hydrogen bonding strength. The enhanced interaction is confirmed by good adhesion visualized in SEM images and the C=O vibration band shift in FTIR spectra. Meanwhile, adjusting the proportion of DABA moiety in polymers is an auxiliary path to regulate the interfacial bonding strength. The optimized membrane of 6FDA-DAM:DABA (1:1)/ 10 wt.% ZIF-8-90(30) has enhanced H-2/CH4 and CO2/CH(4 & nbsp;)ideal selectivities of 75.4 and 43.6, respectively, with H-2 and CO(2 & nbsp;)permeabilities of 222 Barrer and 128 Barrer. These findings imply that progressively regulating filler and polyimide functionality is a feasible route to finely tailor interfacial hydrogen bonding strength to achieve a membrane with tunable separation performance.
KeywordMixed matrix membrane 6FDA-DAM:DABA copolyimide ZIFs functionalization Gas separation
DOI10.1016/j.memsci.2021.120240
Language英语
WOS KeywordZEOLITIC IMIDAZOLATE FRAMEWORKS ; NATURAL-GAS ; CARBON-DIOXIDE ; CO2 ; PERFORMANCE ; POLYIMIDE ; FUNCTIONALIZATION ; ADSORPTION ; LIGAND
Funding ProjectNational Natural Science Foundation of China[21978321] ; Beijng Natural Science Foundation[2222021]
WOS Research AreaEngineering ; Polymer Science
WOS SubjectEngineering, Chemical ; Polymer Science
Funding OrganizationNational Natural Science Foundation of China ; Beijng Natural Science Foundation
WOS IDWOS:000788683400005
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/53089
Collection中国科学院过程工程研究所
Corresponding AuthorFan, Yanfang; Luo, Shuangjiang
Affiliation1.China Univ Petr, Coll Chem Engn & Environm, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Liu, Yan,Xie, Wei,Liang, Shuang,et al.

(???????)Polyimide/ZIFs mixed matrix membranes with tunable interfacial interaction for efficient gas separation

[J]. JOURNAL OF MEMBRANE SCIENCE,2022,646:10.
APA Liu, Yan,Xie, Wei,Liang, Shuang,Li, Xingxun,Fan, Yanfang,&Luo, Shuangjiang.(2022).

(???????)Polyimide/ZIFs mixed matrix membranes with tunable interfacial interaction for efficient gas separation

.JOURNAL OF MEMBRANE SCIENCE,646,10.
MLA Liu, Yan,et al."

(???????)Polyimide/ZIFs mixed matrix membranes with tunable interfacial interaction for efficient gas separation

".JOURNAL OF MEMBRANE SCIENCE 646(2022):10.
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