Metal organic frame composite material and preparation method thereof

A metal-organic framework and composite material technology, applied in the field of metal-organic framework composite materials and their preparation, can solve problems such as reducing specific surface area, and achieve the effects of uniform distribution and stable structure

Inactive Publication Date: 2014-12-03

FUDAN UNIV

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However, the addition of binders will block the pores of MO...

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Abstract

The invention belongs to the technical field of nano composite materials and particularly relates to a metal organic frame composite material and a preparation method thereof. The preparation method comprises the steps of adding metal ions and organic ligand into polymer nanowire solution with a core-shell structure to form mixed solution; under the room temperature, crystallizing to obtain the polymer nanowire composite with the metal organic frame/core-shell structure. The composite has the geometric shape same as that of the crystal of the pure metal frame compound, the polymer nanowires penetrate through and cover the single crystal particle, and the particles are connected by the polymer nanowires. In addition, the metal organic frame nanowire network composite growing along the polymer nanowires can be obtained. Due to addition of the polymer nanowires, functional groups or particles can be introduced, and the functionality of the metal organic frame composite material is improved. The composite material has the advantages that the preparation process is simplified, the stability of macroscopic aggregates of the material is improved and the actual application of the material is facilitated.

Application Domain

Other chemical processesAlkali metal oxides/hydroxides

Technology Topic

IonCompound s +9

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Examples

Experimental program(11)

Example Embodiment

[0032] Example 1. Preparation of ZIF-8/Polymer Nanowires

[0033] (1) 400ml, 2mg/ml polymer PEG 113 - b -P4VP 67 After assembling into nanowires in water, add 0.4 ml 1,4-dibromobutane for cross-linking (cross-linking degree is 100%), and stir for 2 days at room temperature. After centrifugation, the solvent was switched to methanol, and the concentration of polymer nanowires was 2 mg/ml.

[0034] (2) Add 10ml polymer nanowire solution, 15ml methanol, and then add 25ml Zn(NO 3 ) 2 ·6H 2 O (250mM) methanol solution, 50ml 2-methylimidazole (250mM) methanol solution. Shake well and let stand at room temperature. A white precipitate was obtained after 24 hours, collected by centrifugation, washed twice with methanol, and dried in a vacuum oven overnight to obtain 0.1025 g of a white solid. The field emission scanning electron microscope results of the product are as follows figure 1 , XRD and nitrogen adsorption and desorption experiments such as figure 2.

Example Embodiment

[0035] Example 2. Preparation of ZIF-8/Polymer Nanowires

[0036] The preparation process of polymer nanowires is as in Example 1 (1)

[0037] Add 10ml polymer nanowire solution, 15ml methanol, and then add 25ml Zn(NO 3 ) 2 · 6H 2 O (250mM) methanol solution, 25ml 2-methylimidazole (250mM) methanol solution. Shake well and let stand at room temperature. A white precipitate was obtained after 24 hours, collected by centrifugation, washed twice with methanol, and dried in a vacuum oven overnight to obtain 0.1248 g of a white solid. The field emission scanning electron microscope results of the product are as follows image 3 , Compression strength such as Figure 5 ZIF-8/nanofiber.

Example Embodiment

[0038] Example 3. Using polymer nanowires as a template, ZIF-8 grows along the polymer nanowires into a ZIF-8 nanowire network

[0039] The preparation process of polymer nanowires is as in Example 1 (1)

[0040] Add 2ml polymer nanowire (2mg/ml) solution, 83ml methanol, and then add 5ml Zn(NO 3 ) 2 ·6H 2 O (250mM) methanol solution, 10ml 2-methylimidazole (250mM) methanol solution. Shake well and let stand at room temperature. After 24h, a white flocculent precipitate was obtained, which was collected by centrifugation, washed twice with methanol, and dried in a vacuum oven overnight to obtain 0.0635g of white solid. The field emission scanning electron microscope results of the product are as follows Figure 4 , Compression strength such as Figure 5 ZIF-8 fiber network.

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PUM

Property	Measurement	Unit
Concentration	0.1 ~ 10.0	mg/ml
tensile		MPa
Particle size		Pa
strength	10

Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

Evenly distributed
Stable structure

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Single crystal Polymer Mixed solution Room temperature Crystal Crystallization

Metal organic frame composite material and preparation method thereof

A metal-organic framework and composite material technology, applied in the field of metal-organic framework composite materials and their preparation, can solve problems such as reducing specific surface area, and achieve the effects of uniform distribution and stable structure

AI-Extracted Technical Summary

Problems solved by technology

Abstract

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Examples

Example Embodiment

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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