Journal
JOURNAL OF COORDINATION CHEMISTRY
Volume 66, Issue 12, Pages 2079-2090Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/00958972.2013.797966
Keywords
n-Heptane; Vapor-assisted conversion method; Zeolitic imidazolate frameworks (ZIFs)
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Funding
- National Natural Science Funds, Program for the Shanxi Province Foundation for Returness [51172153]
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ZIF-8 [Zn(MIM)(2), MIM=2-methylimidazole] samples were synthesized by a vapor-assisted conversion method with n-heptane, methanol, and DMF, respectively. X-ray diffraction, thermogravimetric analysis, nitrogen (N-2) adsorption, Fourier transform infrared spectroscopy, and scanning electron microscopy were used to characterize the properties of the ZIF-8 samples. The particle sizes of the ZIF-8 samples synthesized with methanol, DMF, and n-heptane were 10-20, 60-90, and 30-50m, respectively. To our knowledge, this is the first time that ZIF-8 has been synthesized through vapor-assisted conversion with nonpolar n-heptane. For the ZIF-8 synthesis by this method, 0.5mL of solvent was sufficient, greatly reducing the solvent dosage required compared with a traditional solvothermal method. In our study, on the crystallization of ZIF-8 synthesis by different liquid phases at 50 and 100 degrees C, we found that the transformation rate from the solid reagents to ZIF-8 phase with n-heptane was faster than that with methanol or DMF.
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