Details
| Originalsprache | Englisch |
|---|---|
| Aufsatznummer | eaau1393 |
| Fachzeitschrift | Science advances |
| Jahrgang | 4 |
| Ausgabenummer | 10 |
| Publikationsstatus | Veröffentlicht - 26 Okt. 2018 |
Abstract
Metal-organic framework (MOF) membranes show great promise for propene/propane separation, yet a sharp molecular sieving has not been achieved due to their inherent linker mobility. Here, zeolitic imidazolate framework ZIF-8-type membranes with suppressed linker mobility are prepared by a fast current-driven synthesis (FCDS) strategy within 20 min, showing sharpened molecular sieving for propene/propane separation with a separation factor above 300. During membrane synthesis, the direct current promotes the metal ions and ligands to assemble into inborn-distorted and stiffer frameworks with ZIF-8-Cm (a newly discovered polymorph of ZIF-8) accounting for 60 to 70% of the membrane composition. Molecular dynamics simulations further verify that ZIF-8-Cm is superior to ZIF-8-I-43m (the common cubic phase) for propene/propane separation. FCDS holds great potential to produce high-quality, ultrathin MOF membranes on a large scale.
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in: Science advances, Jahrgang 4, Nr. 10, eaau1393, 26.10.2018.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Paralyzed membrane: Current-driven synthesis of ametal-organic framework with sharpened propene/propane separation
AU - Zhou, Sheng
AU - Wei, Yanying
AU - Li, Libo
AU - Duan, Yifan
AU - Hou, Qianqian
AU - Zhang, Lili
AU - Ding, Liang-Xin
AU - Xue, Jian
AU - Wang, Haihui
AU - Caro, Jürgen
N1 - Funding: We gratefully acknowledge the funding from the Natural Science Foundation ofChina (21536005, 51621001, 21506066, and 21606086), NSFC-DFG (GZ-678), the NaturalScience Foundation of the Guangdong Province (2014A030312007), and Guangdong NaturalScience Funds for Distinguished Young Scholar (2017A030306002). J.C. thanks the 1000Talents Program of the Chinese government.
PY - 2018/10/26
Y1 - 2018/10/26
N2 - Metal-organic framework (MOF) membranes show great promise for propene/propane separation, yet a sharp molecular sieving has not been achieved due to their inherent linker mobility. Here, zeolitic imidazolate framework ZIF-8-type membranes with suppressed linker mobility are prepared by a fast current-driven synthesis (FCDS) strategy within 20 min, showing sharpened molecular sieving for propene/propane separation with a separation factor above 300. During membrane synthesis, the direct current promotes the metal ions and ligands to assemble into inborn-distorted and stiffer frameworks with ZIF-8-Cm (a newly discovered polymorph of ZIF-8) accounting for 60 to 70% of the membrane composition. Molecular dynamics simulations further verify that ZIF-8-Cm is superior to ZIF-8-I-43m (the common cubic phase) for propene/propane separation. FCDS holds great potential to produce high-quality, ultrathin MOF membranes on a large scale.
AB - Metal-organic framework (MOF) membranes show great promise for propene/propane separation, yet a sharp molecular sieving has not been achieved due to their inherent linker mobility. Here, zeolitic imidazolate framework ZIF-8-type membranes with suppressed linker mobility are prepared by a fast current-driven synthesis (FCDS) strategy within 20 min, showing sharpened molecular sieving for propene/propane separation with a separation factor above 300. During membrane synthesis, the direct current promotes the metal ions and ligands to assemble into inborn-distorted and stiffer frameworks with ZIF-8-Cm (a newly discovered polymorph of ZIF-8) accounting for 60 to 70% of the membrane composition. Molecular dynamics simulations further verify that ZIF-8-Cm is superior to ZIF-8-I-43m (the common cubic phase) for propene/propane separation. FCDS holds great potential to produce high-quality, ultrathin MOF membranes on a large scale.
UR - http://www.scopus.com/inward/record.url?scp=85055850883&partnerID=8YFLogxK
U2 - 10.1126/sciadv.aau1393
DO - 10.1126/sciadv.aau1393
M3 - Article
C2 - 30410983
AN - SCOPUS:85055850883
VL - 4
JO - Science advances
JF - Science advances
SN - 2375-2548
IS - 10
M1 - eaau1393
ER -