Details
| Original language | English |
|---|---|
| Pages (from-to) | 3582-3586 |
| Number of pages | 5 |
| Journal | CHEMSUSCHEM |
| Volume | 8 |
| Issue number | 21 |
| Early online date | 5 Nov 2015 |
| Publication status | E-pub ahead of print - 5 Nov 2015 |
Abstract
Significantly enhanced H2/CH4 (ca. 80) selectivity was realized by effective suppression of the framework flexibility of a prepared ZIF-8 membrane. Initially a ZnO buffer layer consisting of 20 nm-sized ZnO-nanoparticle aggregates was fabricated by controlled calcination of a ZnAl-NO3 layered double hydroxide membrane. Owing to its high chemical reactivity, the ZnO buffer layer was partially converted into a well-intergrown ZIF-8 membrane with a certain penetration depth upon solvothermal treatment with ligands. Our method may represent a new concept for the design of advanced MOF membranes with high selectivity. There is still space for improvement: Alleviation of the framework flexibility enables significantly enhanced gas selectivity of pure ZIF-8 membranes, which is realized by partial conversion of calcined ZnAl-NO3 layered double hydroxide precursor membranes under solvothermal conditions. This study represents a new concept for designing advanced MOF membranes.
Keywords
- layered compounds, membranes, metal-organic frameworks, solvothermal growth, ZnO
ASJC Scopus subject areas
- Environmental Science(all)
- Environmental Chemistry
- Chemical Engineering(all)
- Materials Science(all)
- Energy(all)
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In: CHEMSUSCHEM, Vol. 8, No. 21, 05.11.2015, p. 3582-3586.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Significantly enhanced separation using ZIF-8 membranes by partial conversion of calcined layered double hydroxide precursors
AU - Liu, Yi
AU - Peng, Yuan
AU - Wang, Nanyi
AU - Li, Yanshuo
AU - Pan, Jia Hong
AU - Yang, Weishen
AU - Caro, Jürgen
PY - 2015/11/5
Y1 - 2015/11/5
N2 - Significantly enhanced H2/CH4 (ca. 80) selectivity was realized by effective suppression of the framework flexibility of a prepared ZIF-8 membrane. Initially a ZnO buffer layer consisting of 20 nm-sized ZnO-nanoparticle aggregates was fabricated by controlled calcination of a ZnAl-NO3 layered double hydroxide membrane. Owing to its high chemical reactivity, the ZnO buffer layer was partially converted into a well-intergrown ZIF-8 membrane with a certain penetration depth upon solvothermal treatment with ligands. Our method may represent a new concept for the design of advanced MOF membranes with high selectivity. There is still space for improvement: Alleviation of the framework flexibility enables significantly enhanced gas selectivity of pure ZIF-8 membranes, which is realized by partial conversion of calcined ZnAl-NO3 layered double hydroxide precursor membranes under solvothermal conditions. This study represents a new concept for designing advanced MOF membranes.
AB - Significantly enhanced H2/CH4 (ca. 80) selectivity was realized by effective suppression of the framework flexibility of a prepared ZIF-8 membrane. Initially a ZnO buffer layer consisting of 20 nm-sized ZnO-nanoparticle aggregates was fabricated by controlled calcination of a ZnAl-NO3 layered double hydroxide membrane. Owing to its high chemical reactivity, the ZnO buffer layer was partially converted into a well-intergrown ZIF-8 membrane with a certain penetration depth upon solvothermal treatment with ligands. Our method may represent a new concept for the design of advanced MOF membranes with high selectivity. There is still space for improvement: Alleviation of the framework flexibility enables significantly enhanced gas selectivity of pure ZIF-8 membranes, which is realized by partial conversion of calcined ZnAl-NO3 layered double hydroxide precursor membranes under solvothermal conditions. This study represents a new concept for designing advanced MOF membranes.
KW - layered compounds
KW - membranes
KW - metal-organic frameworks
KW - solvothermal growth
KW - ZnO
UR - http://www.scopus.com/inward/record.url?scp=84946213972&partnerID=8YFLogxK
U2 - 10.1002/cssc.201500977
DO - 10.1002/cssc.201500977
M3 - Article
C2 - 26427908
AN - SCOPUS:84946213972
VL - 8
SP - 3582
EP - 3586
JO - CHEMSUSCHEM
JF - CHEMSUSCHEM
SN - 1864-5631
IS - 21
ER -