Details
| Original language | English |
|---|---|
| Article number | 120432 |
| Journal | Journal of membrane science |
| Volume | 652 |
| Early online date | 19 Mar 2022 |
| Publication status | Published - 15 Jun 2022 |
Abstract
Well-intergrown ZIF-67 membranes were prepared by the assistance of laminarly stacked MXene films. Several analytic methods have found that the MXene films, despite being as thin as 90 nm, could host a high amount of Co (II) ions. The Co (II)-MXene films acted as buffer layer and provided anchor sites for nucleation. After solvothermal synthesis, well-intergrown ZIF-67 membranes with a thickness about 4 μm were formed on Co (II)-MXene modified α-Al2O3 disks. Single-gas and mixed-gas permeation experiments showed that the ZIF-67 membranes exhibited excellent gas separation performance and long-term chemical (against CO2 and H2O) and thermal stabilities with a He permeance greater than 6.6 × 10−8 mol m–2 s–1 Pa–1 and selectivities above 13 for the gas mixtures He/N2 and He/CH4, superior to the state-of-the-art MOF membranes.
Keywords
- 2D laminar membrane, Gas separation, Helium recovery, MXene, ZIF-67 membrane
ASJC Scopus subject areas
- Biochemistry, Genetics and Molecular Biology(all)
- Biochemistry
- Materials Science(all)
- Chemistry(all)
- Physical and Theoretical Chemistry
- Chemical Engineering(all)
- Filtration and Separation
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: Journal of membrane science, Vol. 652, 120432, 15.06.2022.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - MXene assisted preparation of well-intergrown ZIF-67 membrane for helium separation
AU - Zhao, Zhijun
AU - Ding, Li
AU - Hinterding, Richard
AU - Mundstock, Alexander
AU - Belke, Christopher
AU - Haug, Rolf J.
AU - Wang, Haihui
AU - Feldhoff, Armin
N1 - Funding Information: This work was financially supported by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation, 409987259 ) and the National Natural Science Foundation of China ( 22008077 ). The authors thank M.Sc. F. Rieck genannt Best for his assistance during the infrared spectroscopy measurements and Dr. R. Almeev for access to the JSM-7610FPlus scanning electron microscope as well as F. Steinbach for the energy-dispersive X-ray analysis.
PY - 2022/6/15
Y1 - 2022/6/15
N2 - Well-intergrown ZIF-67 membranes were prepared by the assistance of laminarly stacked MXene films. Several analytic methods have found that the MXene films, despite being as thin as 90 nm, could host a high amount of Co (II) ions. The Co (II)-MXene films acted as buffer layer and provided anchor sites for nucleation. After solvothermal synthesis, well-intergrown ZIF-67 membranes with a thickness about 4 μm were formed on Co (II)-MXene modified α-Al2O3 disks. Single-gas and mixed-gas permeation experiments showed that the ZIF-67 membranes exhibited excellent gas separation performance and long-term chemical (against CO2 and H2O) and thermal stabilities with a He permeance greater than 6.6 × 10−8 mol m–2 s–1 Pa–1 and selectivities above 13 for the gas mixtures He/N2 and He/CH4, superior to the state-of-the-art MOF membranes.
AB - Well-intergrown ZIF-67 membranes were prepared by the assistance of laminarly stacked MXene films. Several analytic methods have found that the MXene films, despite being as thin as 90 nm, could host a high amount of Co (II) ions. The Co (II)-MXene films acted as buffer layer and provided anchor sites for nucleation. After solvothermal synthesis, well-intergrown ZIF-67 membranes with a thickness about 4 μm were formed on Co (II)-MXene modified α-Al2O3 disks. Single-gas and mixed-gas permeation experiments showed that the ZIF-67 membranes exhibited excellent gas separation performance and long-term chemical (against CO2 and H2O) and thermal stabilities with a He permeance greater than 6.6 × 10−8 mol m–2 s–1 Pa–1 and selectivities above 13 for the gas mixtures He/N2 and He/CH4, superior to the state-of-the-art MOF membranes.
KW - 2D laminar membrane
KW - Gas separation
KW - Helium recovery
KW - MXene
KW - ZIF-67 membrane
UR - http://www.scopus.com/inward/record.url?scp=85127333200&partnerID=8YFLogxK
U2 - 10.1016/j.memsci.2022.120432
DO - 10.1016/j.memsci.2022.120432
M3 - Article
AN - SCOPUS:85127333200
VL - 652
JO - Journal of membrane science
JF - Journal of membrane science
SN - 0376-7388
M1 - 120432
ER -