Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 19, Issue 40, Pages 27178-27183Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7cp04694d
Keywords
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Funding
- National Natural Foundation of China [21371179, 21571187, 21501198]
- Taishan Scholar Foundation [ts201511019]
- Fundamental Research Funds for the Central Universities [16CX02016A]
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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 frame work 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 theoxidative environment. The results suggest that ZIF-8 undergoes three transition stages, which are thelattice expansion stage below 200 degrees C, the reversible structural deformation stage from 200 to 350 degrees C,and the decomposition/collapse stage over 350 degrees C. Our research indicates that the Zn-N bond breaksat a temperature of 350 degrees C in the oxidant environment, leading to a drastic deformation of the ZIF-8 structure.
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