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Monitoring thermally induced structural deformation and framework decomposition of ZIF-8 through in situ temperature dependent measurements

Abstract

ZIF-8 is an easily synthesized porous material which is widely applied in gas storage/separation, catalyst, and nanoarchitecture fabrication. Thermally induced atomic displacements and the resultant framework deformation/collapse significantly influence the application of ZIF-8, and therefore, in situ temperature dependent FTIR spectroscopy were utilized to study the framework changes during heating in the oxidative environment. The results suggest that ZIF-8 undergoes three transition stages, which are lattice expansion stage below 200 ℃, “reversibl” structural deformation stage from 200 to 350℃, and decomposition/collapse stage over 350℃. Our research indicates that the Zn-N bond breaks at the temperature of 350℃ in the oxidant environment, leading to the drastic deformation of ZIF-8 structure.

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Publication details

The article was received on 12 Jul 2017, accepted on 08 Aug 2017 and first published on 08 Aug 2017


Article type: Paper
DOI: 10.1039/C7CP04694D
Citation: Phys. Chem. Chem. Phys., 2017, Accepted Manuscript
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    Monitoring thermally induced structural deformation and framework decomposition of ZIF-8 through in situ temperature dependent measurements

    B. Xu, Y. Mei, Z. Xiao, Z. Kang, R. Wang and D. Sun, Phys. Chem. Chem. Phys., 2017, Accepted Manuscript , DOI: 10.1039/C7CP04694D

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