Nanopolyhedrons and mesoporous supra-structures of Zeolitic Imidazolate framework with high adsorption performance

Polyhedron was prepared by layer TEA and hexane solution into DMF solution of Zn(NO3)2·6H2O and imidazole-2-carboxyaldehyde. And suprastructural Zeolitic Imidazolate framework (ZIF-90) was prepared by direct addition of TEA. The octahedron displayed excellent adsorption performance and the suprastru...

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Bibliographic Details
Published in:	Microporous and mesoporous materials Vol. 169; pp. 218 - 221
Main Authors:	Xin, Zhifeng, Chen, Xingshun, Wang, Qiang, Chen, Qun, Zhang, Qianfeng
Format:	Journal Article
Language:	English
Published:	San Diego, CA Elsevier Inc 15-03-2013 Elsevier
Subjects:	Adsorption performance Chemistry Colloidal state and disperse state Diffusion method Exact sciences and technology General and physical chemistry Mesopores Porous materials Surface physical chemistry Zeolitic Imidazolate frameworks Zeolitic Imidazolate frameworks Diffusion method Adsorption performance Mesopores Scanning electron microscopy Five membered ring Nitrogen heterocycle X ray diffraction Porous material Mesoporosity Gases Adsorption N,N-Dimethylformamide Imidazole Morphology Hexane Zeolitic imidazolate framework Diffusion Structure Diameter Room temperature Crystalline structure
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Summary:	Polyhedron was prepared by layer TEA and hexane solution into DMF solution of Zn(NO3)2·6H2O and imidazole-2-carboxyaldehyde. And suprastructural Zeolitic Imidazolate framework (ZIF-90) was prepared by direct addition of TEA. The octahedron displayed excellent adsorption performance and the suprastructural ZIF-90 showed mesoporous structure. [Display omitted] ► ZIF-90 polyhedron was synthesized via diffusion of TEA to reactants solution. ► Suprastructure (Zn(ICA)-2) was synthesized via directly addition of TEA. ► The surface areas were checked with N2 adsorption measurement. ► The polyhedron displayed excellent adsorption performance. ► Suprastructural ZIF-90 showed mesoporous structure. Zeolitic Imidazolate framework (ZIF-90) polyhedron (Zn(ICA)-1) was synthesized via diffusion of triethlyamine (TEA) and hexane solution into the N,N′-dimethylformamide (DMF) solution of imidazole-2-carboxyaldehyde (ICA) and Zn(NO3)2·6H2O at room temperature. And suprastructure (Zn(ICA)-2) were synthesized via direct addition of TEA to the N,N′-dimethylformamide (DMF) solution of imidazole-2-carboxyaldehyde (ICA) and Zn(NO3)2·6H2O at room temperature. The scanning electron microscopy (SEM) measurement indicated that the sample of Zn(ICA)-1 showed polyhedron morphology with the diameter of 300–400nm and the sample of Zn(ICA)-2 showed super-structural morphology. XRD results indicated that Zn(ICA)-1 has the crystalline structure of ZIF-90 and Zn(ICA)-2 is amorphous. The gases adsorption measurement results showed that the sample Zn(ICA)-2 exhibited mesoporous structure.
ISSN:	1387-1811 1873-3093
DOI:	10.1016/j.micromeso.2012.11.003