Supersonic cold spraying for zeolitic metal-organic framework films

Do Yeon Kim, Bhavana N. Joshi, Jong Gun Lee, Jong Hyuk Lee, Ji Sun Lee, Young Kyu Hwang, Jong San Chang, Salem Al-Deyab, Jin Chong Tan, Sam S. Yoon

Research output: Contribution to journalArticlepeer-review

33 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)49-56
Number of pages8
JournalChemical Engineering Journal
Publication statusPublished - 2016 Jul 1

Bibliographical note

Publisher Copyright:
© 2016 Elsevier B.V.


  • Metal-organic framework
  • Supersonic spray-coating

ASJC Scopus subject areas

  • General Chemistry
  • Environmental Chemistry
  • General Chemical Engineering
  • Industrial and Manufacturing Engineering


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