Sprayable, Large-Area Metal-Organic Framework Films and Membranes of Varying Thickness
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- 作者：Silvana Hurrle ; Sebastian Friebe ; Jonas Wohlgemuth ; Prof. Dr. Christof Wö ; ll ; Prof. Dr. Jü ; rgen Caro and Dr. Lars Heinke
- 刊名：Chemistry - A European Journal
- 出版年：2017
- 出版时间：February 16, 2017
- 年：2017
- 卷：23
- 期：10
- 页码：2294-2298
- 全文大小：1229K
- ISSN：1521-3765
文摘
Despite their huge potential for efficient molecular separation, the fabrication of membranes from metal–organic frameworks (MOFs) remains a major challenge. The powders obtained by the conventional solvothermal MOF syntheses are difficult to process, and as a result the fabrication of well-performing, large-area MOF-based membranes is still awaiting success. The deposition of MOF thin films suited for membrane applications is demonstrated by employing a step-by-step spray method. This method can be scaled up to obtain industrially relevant membrane areas and a continuous process is also possible. The performance of sprayed HKUST-1-based membranes by the separation of a binary Hb>2 b>/COb>2 b> mixture is also demonstrated. Furthermore, this approach enables the control of the MOF film thickness, and thus controlling the permeance and the selectivity of the membrane.