Directly Gel‐Thermal Processing of Linker‐Mixed Crystal‐Glass Composite Membranes for Sorption‐Preferential Gas Separation
Abstract Membrane processes are promising for energy‐saving industrial applications. However, efficient separation for some valuable gas mixtures with similar characteristics, such as CH4/N2 and O2/N2, remains extremely challenging. Metal–organic framework (MOF) membranes have been attracting intens...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2025-02-01
|
| Series: | Advanced Science |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/advs.202413942 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832540886015148032 |
|---|---|
| author | Yihao Xiao Yanqing Yu Xinxi Huang Da Chen Wanbin Li |
| author_facet | Yihao Xiao Yanqing Yu Xinxi Huang Da Chen Wanbin Li |
| author_sort | Yihao Xiao |
| collection | DOAJ |
| description | Abstract Membrane processes are promising for energy‐saving industrial applications. However, efficient separation for some valuable gas mixtures with similar characteristics, such as CH4/N2 and O2/N2, remains extremely challenging. Metal–organic framework (MOF) membranes have been attracting intensive attention for gas sieving, but it is difficult to manufacture MOF membranes in scalability and precisely tune their transport property. In this study, Gel‐thermal processing of linker‐mixed MOF crystal‐glass composite membranes is reported directly, with the mechanism of adjusting metal‐linker bond strengths and angles to disrupt long‐range periodicity of MOFs and promote glass phase formation, for sharply sorption‐preferential gas separation. This strategy can be realized by using a simple, solvent/precursor‐less, and cost‐effective gel‐thermal approach with two steps of gel coating and thermal conversion, thereby constructing crystal‐glass composite membranes in a controllable, processable, versatile, and environmentally friendly route. Moreover, the mixed linkers enable preferential gas affinities and the ultramicroporous glasses can eliminate any membrane defects. The membranes exhibit outstanding gas separation performance for the challenging systems of CH4/N2 and O2/N2, with mixture selectivities up to 9.3 and 9.6, respectively, far exceeding those of polymer, MOF, and mixed‐matrix membranes. The study provides an available route for architecting high‐performance membranes for gas separations. |
| format | Article |
| id | doaj-art-2f5a741bb93749eb91af26a73117f02f |
| institution | Kabale University |
| issn | 2198-3844 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj-art-2f5a741bb93749eb91af26a73117f02f2025-02-04T13:14:54ZengWileyAdvanced Science2198-38442025-02-01125n/an/a10.1002/advs.202413942Directly Gel‐Thermal Processing of Linker‐Mixed Crystal‐Glass Composite Membranes for Sorption‐Preferential Gas SeparationYihao Xiao0Yanqing Yu1Xinxi Huang2Da Chen3Wanbin Li4College of Environment and Climate Jinan University No. 855, East Xingye Avenue, Panyu District Guangzhou 511443 ChinaCollege of Environment and Climate Jinan University No. 855, East Xingye Avenue, Panyu District Guangzhou 511443 ChinaCollege of Environment and Climate Jinan University No. 855, East Xingye Avenue, Panyu District Guangzhou 511443 ChinaCollege of Environment and Climate Jinan University No. 855, East Xingye Avenue, Panyu District Guangzhou 511443 ChinaCollege of Environment and Climate Jinan University No. 855, East Xingye Avenue, Panyu District Guangzhou 511443 ChinaAbstract Membrane processes are promising for energy‐saving industrial applications. However, efficient separation for some valuable gas mixtures with similar characteristics, such as CH4/N2 and O2/N2, remains extremely challenging. Metal–organic framework (MOF) membranes have been attracting intensive attention for gas sieving, but it is difficult to manufacture MOF membranes in scalability and precisely tune their transport property. In this study, Gel‐thermal processing of linker‐mixed MOF crystal‐glass composite membranes is reported directly, with the mechanism of adjusting metal‐linker bond strengths and angles to disrupt long‐range periodicity of MOFs and promote glass phase formation, for sharply sorption‐preferential gas separation. This strategy can be realized by using a simple, solvent/precursor‐less, and cost‐effective gel‐thermal approach with two steps of gel coating and thermal conversion, thereby constructing crystal‐glass composite membranes in a controllable, processable, versatile, and environmentally friendly route. Moreover, the mixed linkers enable preferential gas affinities and the ultramicroporous glasses can eliminate any membrane defects. The membranes exhibit outstanding gas separation performance for the challenging systems of CH4/N2 and O2/N2, with mixture selectivities up to 9.3 and 9.6, respectively, far exceeding those of polymer, MOF, and mixed‐matrix membranes. The study provides an available route for architecting high‐performance membranes for gas separations.https://doi.org/10.1002/advs.202413942gas separationslinker mixingmembranesmetal–organic frameworkssol–gel |
| spellingShingle | Yihao Xiao Yanqing Yu Xinxi Huang Da Chen Wanbin Li Directly Gel‐Thermal Processing of Linker‐Mixed Crystal‐Glass Composite Membranes for Sorption‐Preferential Gas Separation Advanced Science gas separations linker mixing membranes metal–organic frameworks sol–gel |
| title | Directly Gel‐Thermal Processing of Linker‐Mixed Crystal‐Glass Composite Membranes for Sorption‐Preferential Gas Separation |
| title_full | Directly Gel‐Thermal Processing of Linker‐Mixed Crystal‐Glass Composite Membranes for Sorption‐Preferential Gas Separation |
| title_fullStr | Directly Gel‐Thermal Processing of Linker‐Mixed Crystal‐Glass Composite Membranes for Sorption‐Preferential Gas Separation |
| title_full_unstemmed | Directly Gel‐Thermal Processing of Linker‐Mixed Crystal‐Glass Composite Membranes for Sorption‐Preferential Gas Separation |
| title_short | Directly Gel‐Thermal Processing of Linker‐Mixed Crystal‐Glass Composite Membranes for Sorption‐Preferential Gas Separation |
| title_sort | directly gel thermal processing of linker mixed crystal glass composite membranes for sorption preferential gas separation |
| topic | gas separations linker mixing membranes metal–organic frameworks sol–gel |
| url | https://doi.org/10.1002/advs.202413942 |
| work_keys_str_mv | AT yihaoxiao directlygelthermalprocessingoflinkermixedcrystalglasscompositemembranesforsorptionpreferentialgasseparation AT yanqingyu directlygelthermalprocessingoflinkermixedcrystalglasscompositemembranesforsorptionpreferentialgasseparation AT xinxihuang directlygelthermalprocessingoflinkermixedcrystalglasscompositemembranesforsorptionpreferentialgasseparation AT dachen directlygelthermalprocessingoflinkermixedcrystalglasscompositemembranesforsorptionpreferentialgasseparation AT wanbinli directlygelthermalprocessingoflinkermixedcrystalglasscompositemembranesforsorptionpreferentialgasseparation |