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Functionalized ZIF type metal organic framework (MOF) porous material as well as preparation method and application of material

A metal-organic framework and porous material technology, applied in chemical instruments and methods, separation methods, alkali metal compounds, etc., can solve the problems of IRMOF-3's poor chemical stability, limited application, and difficulty in obtaining functional metal-organic framework materials. Achieve the effects of excellent electrochemical performance stability, good discharge specific capacity, and excellent structural stability

Active Publication Date: 2015-01-28
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, functionalized metal-organic frameworks are difficult to obtain, and there are not many reports
This is because the preparation of metal-organic frameworks is generally prepared under hydrothermal or solvothermal conditions, but the functionalized organic ligands used in the synthesis of functionalized metal-organic frameworks are difficult to exist stably under hydrothermal or solvothermal conditions.
[0004] For example, the functionalized metal-organic framework material IRMOF-3 reported in the literature: science, 295, 2002, 469-472 has poor chemical stability, especially sensitive to water, and exposure to air may lead to structural damage. These factors Limits its application in real conditions

Method used

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  • Functionalized ZIF type metal organic framework (MOF) porous material as well as preparation method and application of material
  • Functionalized ZIF type metal organic framework (MOF) porous material as well as preparation method and application of material
  • Functionalized ZIF type metal organic framework (MOF) porous material as well as preparation method and application of material

Examples

Experimental program
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Effect test

Embodiment 1

[0043] In this embodiment, the framework of the functionalized ZIF-type metal-organic framework porous material contains metal Zn 2+ ions, as well as imidazole and aminobenzimidazole, are amino-functionalized ZIF-type metal-organic framework porous materials.

[0044] The preparation method of the amino functionalized ZIF type metal organic framework porous material is as follows:

[0045] The precursor containing imidazole and aminobenzimidazole is C 7 h 7 N 3 with C 3 h 4 N 2 ;

[0046] Contains Zn 2+ The soluble salt of zinc nitrate hexahydrate (Zn(NO 3 ) 2 ●6H 2 O);

[0047] The organic solvent is N,N-dimethylformamide (DMF);

[0048] Measure 15ml of DMF in a polytetrafluoroethylene high-temperature reaction kettle, and sequentially weigh 0.133g of organic compound C 7 h 7 N 3 , 0.246g C 7 h 7 N 3 With 0.3g zinc nitrate hexahydrate (Zn(NO 3 ) 2 ●6H 2 0), poured in the reactor, then added 15ml DMF, stirred evenly with a magnetic stirrer, closed the lid ...

Embodiment 2

[0066] In this example, the framework of the functionalized ZIF-type metal-organic framework porous material contains metal Co 2+ ions, as well as imidazole and aminobenzimidazole, are amino-functionalized ZIF-type metal-organic framework porous materials.

[0067] The preparation method of the amino functionalized ZIF-type metal-organic framework porous material is basically the same as that in Example 1, except that cobalt nitrate hexahydrate is used instead of zinc nitrate hexahydrate in Example 1.

[0068] The crystal structure diagram analyzed by the single crystal X-ray diffraction results of the amino-functionalized ZIF type metal-organic framework porous material obtained above is similar to figure 1 and figure 2 . Figure 8 The metal ion made for the above is Co 2+ The XRD curve of the amino functionalized ZIF type metal-organic framework porous material, it can be seen that the XRD curve is consistent with image 3 The XRD curves shown are consistent, which mean...

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Abstract

The invention provides a functionalized ZIF type metal organic framework (MOF) porous material. A framework of the material comprises metal ions Zn<2+> or Co<2+> as well as imidazole and aminobenzimidazole. The material is excellent in physical and chemical stability and overcomes the defect that a traditional MOF porous material is sensitive to water; the material has a good CO2 adsorption property; besides, a lithium ion battery manufactured with the material as an electrode material has good electrochemical properties, and furthermore, after N cycles, the specific discharge capacity of the lithium ion battery tends to be stable, wherein N is greater than or equal to 10; as a result, the functionalized ZIF type MOF porous material has bright application prospect in the field of lithium ion batteries.

Description

technical field [0001] The invention relates to the technical field of metal organic framework materials, in particular to a functionalized ZIF type metal organic framework porous material, its preparation method and application. Background technique [0002] Metal-Organic Frameworks (MOFs for short) is an inorganic material with a network skeleton formed by the coordination of metals and organic ligands. Early also called coordination polymers or porous coordination polymers. Like zeolites, MOFs are crystalline, porous materials, but they are not purely inorganic but organic-inorganic complexes. Metal-organic framework porous materials have potential applications in many fields, such as gas adsorption storage, catalyst support, etc., due to their large specific surface area, high porosity and adjustable pore size. [0003] In recent years, functionalized metal-organic framework materials have been favored by researchers. This is mainly because functionalized metal-organi...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/28B01J20/30B01D53/02H01M4/60
CPCB01D53/02B01D2253/204B01J20/226B01J20/28054H01M4/60Y02C20/40Y02E60/10
Inventor 孔春龙林贻超张秋菊陈亮
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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