Details
| Original language | English |
|---|---|
| Pages (from-to) | 6872-6877 |
| Number of pages | 6 |
| Journal | Journal of the American Chemical Society |
| Volume | 142 |
| Issue number | 15 |
| Early online date | 28 Mar 2020 |
| Publication status | Published - 15 Apr 2020 |
Abstract
In this study, we propose a new concept of vertically aligned 2D covalent organic framework (COF) layers forming a membrane for efficient gas separation on the basis of precise size exclusion. Gas transport takes place through the COF interlayer space (typically 0.3-0.4 nm) rather than through the nanometer-sized pore apertures. Construction of such a unique membrane architecture was implemented via in situ oriented growth of 2D COFs inside a skeleton of vertically aligned CoAl-layered double hydroxide (LDH) nanosheets. The resultant vertical COF-LZU1 membrane exhibits a high H2 permeance of âˆ3600 GPU together with a desirable separation selectivity for gas mixtures such as H2/CO2 (31.6) and H2/CH4 (29.5), thus surpassing the 2008 Robeson upper bounds. The universality of this approach was demonstrated by successfully producing two types of high-quality vertical COF membranes with superior performance as well as outstanding running stability.
ASJC Scopus subject areas
- Chemical Engineering(all)
- Catalysis
- Chemistry(all)
- Biochemistry, Genetics and Molecular Biology(all)
- Biochemistry
- Chemical Engineering(all)
- Colloid and Surface Chemistry
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In: Journal of the American Chemical Society, Vol. 142, No. 15, 15.04.2020, p. 6872-6877.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - High-Flux Vertically Aligned 2D Covalent Organic Framework Membrane with Enhanced Hydrogen Separation
AU - Fan, Hongwei
AU - Peng, Manhua
AU - Strauss, Ina
AU - Mundstock, Alexander
AU - Meng, Hong
AU - Caro, Jürgen
N1 - Funding Information: H.F. is grateful for the financial support from Alexander von Humboldt Foundation. The authors acknowledge the Deutsche Forschungsgemeinschaft (DFG, Ca 147/21) for financial support of this work.
PY - 2020/4/15
Y1 - 2020/4/15
N2 - In this study, we propose a new concept of vertically aligned 2D covalent organic framework (COF) layers forming a membrane for efficient gas separation on the basis of precise size exclusion. Gas transport takes place through the COF interlayer space (typically 0.3-0.4 nm) rather than through the nanometer-sized pore apertures. Construction of such a unique membrane architecture was implemented via in situ oriented growth of 2D COFs inside a skeleton of vertically aligned CoAl-layered double hydroxide (LDH) nanosheets. The resultant vertical COF-LZU1 membrane exhibits a high H2 permeance of âˆ3600 GPU together with a desirable separation selectivity for gas mixtures such as H2/CO2 (31.6) and H2/CH4 (29.5), thus surpassing the 2008 Robeson upper bounds. The universality of this approach was demonstrated by successfully producing two types of high-quality vertical COF membranes with superior performance as well as outstanding running stability.
AB - In this study, we propose a new concept of vertically aligned 2D covalent organic framework (COF) layers forming a membrane for efficient gas separation on the basis of precise size exclusion. Gas transport takes place through the COF interlayer space (typically 0.3-0.4 nm) rather than through the nanometer-sized pore apertures. Construction of such a unique membrane architecture was implemented via in situ oriented growth of 2D COFs inside a skeleton of vertically aligned CoAl-layered double hydroxide (LDH) nanosheets. The resultant vertical COF-LZU1 membrane exhibits a high H2 permeance of âˆ3600 GPU together with a desirable separation selectivity for gas mixtures such as H2/CO2 (31.6) and H2/CH4 (29.5), thus surpassing the 2008 Robeson upper bounds. The universality of this approach was demonstrated by successfully producing two types of high-quality vertical COF membranes with superior performance as well as outstanding running stability.
UR - http://www.scopus.com/inward/record.url?scp=85084392580&partnerID=8YFLogxK
U2 - 10.1021/jacs.0c00927
DO - 10.1021/jacs.0c00927
M3 - Article
AN - SCOPUS:85084392580
VL - 142
SP - 6872
EP - 6877
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
SN - 0002-7863
IS - 15
ER -