Basnayake Sajani A, Su Jie, Zou Xiadong, Balkus Kenneth J
Department of Chemistry, University of Texas at Dallas , 800 West Campbell Road, Richardson, Texas 75080-3021, United States.
Inorg Chem. 2015 Feb 16;54(4):1816-21. doi: 10.1021/ic5027174. Epub 2015 Feb 4.
In this study, we report the formation of a new crystal structure, ZIF-CO3-1, which results from the reaction of Zn(2+), 2-methylimidazole, and carbonate. ZIF-CO3-1 can be synthesized solvothermally in N,N-dimethylformamide (DMF)/water (H2O) or by utilizing of CO2 gas at various temperatures in DMF/H2O or H2O. This reaction selectively consumes CO2 because CO2 is incorporated in the ZIF as carbonate. CO2 can be quantitatively released by acidifying the ZIF. Powder X-ray diffraction, single-crystal X-ray diffraction, FTIR spectroscopy, scanning electron microscopy, elemental analysis, and thermogravimetric analysis were used to characterize the ZIF structure. ZIF-CO3-1 (chemical formula C9H10N4O3Zn2), crystallizes in the orthorhombic crystal system with noncentrosymmetric space group Pba2.
在本研究中，我们报道了一种新晶体结构ZIF-CO3-1的形成，它是由锌离子（Zn(2+)）、2-甲基咪唑和碳酸盐反应生成的。ZIF-CO3-1可以在N，N-二甲基甲酰胺（DMF）/水（H2O）中通过溶剂热法合成，或者在DMF/H2O或H2O中于不同温度下利用二氧化碳气体合成。该反应选择性地消耗二氧化碳，因为二氧化碳以碳酸盐的形式掺入到ZIF中。通过酸化ZIF可以定量释放二氧化碳。采用粉末X射线衍射、单晶X射线衍射、傅里叶变换红外光谱、扫描电子显微镜、元素分析和热重分析对ZIF结构进行表征。ZIF-CO3-1（化学式C9H10N4O3Zn2），结晶于正交晶系，具有非中心对称空间群Pba2。
