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Issue 40, 2017
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Monitoring thermally induced structural deformation and framework decomposition of ZIF-8 through in situ temperature dependent measurements

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Abstract

ZIF-8 is an easily synthesized porous material which is widely applied in gas storage/separation, catalysis, 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 was utilized to study the framework changes during heating in the oxidative environment. The results suggest that ZIF-8 undergoes three transition stages, which are the lattice expansion stage below 200 °C, the “reversible” structural deformation stage from 200 to 350 °C, and the decomposition/collapse stage over 350 °C. Our research indicates that the Zn–N bond breaks at a temperature of 350 °C in the oxidant environment, leading to a drastic deformation of the ZIF-8 structure.

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

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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., 2017,19, 27178-27183
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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, 19, 27178
    DOI: 10.1039/C7CP04694D

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