DataVXAdvanced MaterialsPaper
journal article·2020-08

Ultrathin Low‐Crystallinity MOF Membranes Fabricated by Interface Layer Polarization Induction

Zhihua Qiao, Yueyao Liang, Zhengqing Zhang, Donghai Mei, Zhi Wang, Michael D. Guiver, Chongli Zhong

Advanced Materials· Volume 32· Issue 34
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Source abstract

Abstract

Abstract Practical, ultrathin metal‐organic framework (MOF) membranes have the potential to achieve otherwise difficult separations, but current fabrication methods still face challenges in the simultaneous improvement of both selectivity and permeance. Here, ultrathin, low‐crystallinity‐state MOF (LC‐MOF) membranes are realized by a facile general method of interface layer polarization induction. This is achieved using an interface layer having metal ions with dense and uniform distribution, resulting in the creation of abundant open metal sites. Three types of LC‐MOF membranes (45–150 nm) are fabricated, among which ZIF‐8 membranes modified in situ with diethanolamine (DZIF‐8) display the best performance for propylene/propane separation, showing unprecedented propylene permeance (2000–3000 Gas Permeance Units) with very high propylene/propane selectivity (90–120).
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Research context

OpenAlex topics: Metal-Organic Frameworks: Synthesis and Applications · Membrane Separation and Gas Transport · MXene and MAX Phase Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of Separation Membranes and Membrane Processes School of Chemistry and Chemical Engineering Tiangong University Tianjin 300387 China

School of Materials Science and Engineering Tiangong University Tianjin 300387 China

School of Chemical Engineering and Technology Tianjin University Tianjin 300072 China

Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300072 China

State Key Laboratory of Engines Tianjin University Tianjin 300072 China

College of Chemical Engineering Beijing University of Chemical Technology Beijing 100029 China

Funding

National Natural Science Foundation of China

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