期刊
CHEMICAL ENGINEERING JOURNAL
卷 295, 期 -, 页码 49-56出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2016.03.029
关键词
Metal-organic framework; Supersonic spray-coating
资金
- Global Frontier Program through the Global Frontier Hybrid Interface Materials (GFHIM) of the National Research Foundation of Korea (NRF) - Ministry of Science, ICT & Future Planning [2013M3A6B1078879]
- Commercializations Promotion Agency for R&D Outcomes (COMPA) - Ministry of Science, ICT and Future Planning (MISP)
- King Saud University, Vice Deanship of Research Chairs
- [KETEP-20133030010890]
We describe the first use of high-rate supersonic spray coating to deposit thin films of ZIF-8, a zeolitic metal-organic framework (MOF), adopting a sodalite architecture. This cold-spray technique is versatile and scalable, with tunable processing parameters capable of generating either a textured crystalline film or a randomly oriented polycrystalline coating on both metallic and non-metallic substrates. We provide evidence that guest occupancy by organic solvents (dimethylformamide, dimethylacetamide, and dimethylsulfoxide) in the sodalite cage of ZIF-8 structurally stabilizes the framework against high velocity impact, resulting in the preferred orientations observed. Moreover, we show that amorphous ZIF-8 films can be straightforwardly obtained at high air pressure exceeding 7 bars in which the particle velocity is 500 m/s. It is anticipated that this high-throughput approach can be adapted to fabricate microstructurally compact and strongly adhered ZIF-8 films. (C) 2016 Elsevier B.V. All rights reserved.
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