TY - JOUR
T1 - Supersonic cold spraying for zeolitic metal-organic framework films
AU - Kim, Do Yeon
AU - Joshi, Bhavana N.
AU - Lee, Jong Gun
AU - Lee, Jong Hyuk
AU - Lee, Ji Sun
AU - Hwang, Young Kyu
AU - Chang, Jong San
AU - Al-Deyab, Salem
AU - Tan, Jin Chong
AU - Yoon, Suk Goo
PY - 2016/7/1
Y1 - 2016/7/1
N2 - 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.
AB - 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.
KW - Metal-organic framework
KW - Supersonic spray-coating
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U2 - 10.1016/j.cej.2016.03.029
DO - 10.1016/j.cej.2016.03.029
M3 - Article
AN - SCOPUS:84961142161
VL - 295
SP - 49
EP - 56
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
SN - 1385-8947
ER -