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Copper-cobalt double-metal organic framework/nano-fiber composite material, preparation method thereof and application of composite material

An organic framework and nanofiber technology, applied in organic compound/hydride/coordination complex catalysts, chemical instruments and methods, water/sewage treatment, etc., can solve problems such as unsatisfactory catalytic effect and limited application of catalyst materials, To achieve the effect of favorable activity and stability, promotion of adsorption, good catalytic stability

Inactive Publication Date: 2019-01-04
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this catalyst has some disadvantages. The catalytic effect is not ideal at room temperature, and the catalytic pH value is around 3.2, which greatly limits the practical application of this catalyst material.

Method used

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  • Copper-cobalt double-metal organic framework/nano-fiber composite material, preparation method thereof and application of composite material
  • Copper-cobalt double-metal organic framework/nano-fiber composite material, preparation method thereof and application of composite material
  • Copper-cobalt double-metal organic framework/nano-fiber composite material, preparation method thereof and application of composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A copper-cobalt bimetal organic frame / nano fiber composite material, and its preparation method includes the following steps:

[0041] 1) Add 1.5mmol of copper nitrate, 1.5mmol of cobalt nitrate, and 6.0mmol of 2-methylimidazole to 50mL of N,N-dimethylformamide (DMF) solution, stir and dissolve, then transfer to the autoclave In the medium, the temperature is raised to 120°C, and the reaction is sealed for 24 hours, and then washed with water and ethanol three times and centrifuged to obtain copper-cobalt bimetallic MOF particles;

[0042] 2) Add 0.50g of copper-cobalt bimetallic MOF particles and 1.36g of polyacrylonitrile to 9.45g of N,N-dimethylformamide (DMF) solution and stir evenly to obtain electrospinning precursor solution;

[0043] 3) Place the obtained electrospinning precursor solution in a 10mL plastic syringe with a needle for electrospinning. The set working voltage is 12kV DC high voltage, and the distance between the needle and the receiving plate is 15cm. Dur...

Embodiment 2

[0046] A copper-cobalt bimetal organic frame / nano fiber composite material, and its preparation method includes the following steps:

[0047] 1) Add 1.5mmol of copper nitrate, 1.5mmol of cobalt nitrate, and 6.0mmol of terephthalic acid to 50mL of N,N-dimethylformamide (DMF) solution, stir and dissolve thoroughly, then transfer to the autoclave , The temperature was raised to 120°C, the reaction was airtight for 24h, and then washed with water and ethanol three times, centrifuged, and dried to obtain copper-cobalt bimetallic MOF particles;

[0048] 2) Add 0.50g of copper-cobalt bimetallic MOF particles and 1.36g of polyacrylonitrile to 9.45g of N,N-dimethylformamide (DMF) solution and stir evenly to obtain electrospinning precursor solution;

[0049] 3) Place the obtained electrospinning precursor solution in a 10mL plastic syringe with a needle for electrospinning. The set working voltage is 12kV DC high voltage, and the distance between the needle and the receiving plate is 15cm. Du...

Embodiment 3

[0053] A copper-cobalt bimetal organic frame / nano fiber composite material, and its preparation method includes the following steps:

[0054] 1) Add 1.0mmol of copper nitrate, 2.0mmol of cobalt nitrate, and 6.0mmol of terephthalic acid to 50mL of N,N-dimethylformamide (DMF) solution, stir and dissolve it thoroughly, then transfer to the autoclave , The temperature was raised to 120°C, the reaction was airtight for 24h, and then washed with water and ethanol three times, centrifuged, and dried to obtain copper-cobalt bimetallic MOF particles;

[0055] 2) Add 0.50g of copper-cobalt bimetallic MOF particles and 1.36g of polyacrylonitrile to 9.45g of N,N-dimethylformamide (DMF) solution and stir evenly to obtain electrospinning precursor solution;

[0056] 3) Place the obtained electrospinning precursor solution in a 10mL plastic syringe with a needle for electrospinning. The set working voltage is 12kV DC high voltage, and the distance between the needle and the receiving plate is 15cm....

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Abstract

The invention discloses a copper-cobalt double-metal organic framework / nano-fiber composite material (CuCo-MOF@NF). A preparation method of the composite material includes the steps: firstly, preparing a copper-cobalt double-metal organic framework by a solvothermal method; secondly, mixing the copper-cobalt double-metal organic framework and a high-molecular polymer to prepare the copper-cobalt double-metal organic framework / nano-fiber composite material by an electrostatic spinning method. The composite material has excellent catalytic effects on azo-dyes such as rhodamine B (cationic dyes)and acid red 1 (anionic dyes) at normal pressure and temperature. The preparation method of the composite material is simple, a catalyst is convenient to operate and recycle, high in catalytic efficiency, good in stability and less in dosage, mass production of the composite material is easily achieved, and the composite material has an excellent application prospect in respects of catalytic degradation of azo-dyes in industrial wastewater and control of other pollutants.

Description

Technical field [0001] The invention belongs to the field of environmental functional materials, and specifically relates to a copper-cobalt bimetallic organic frame / nano fiber composite material and a preparation method and application thereof. Background technique [0002] With the rapid development of modernization and the widespread application of industrial and agricultural chemicals, the pollution-related problems of soil and water are becoming more and more serious. Therefore, the development of high-efficiency catalysts that can quickly catalyze the degradation of pollutants in water has important practical significance. Transition metal catalyst is a widely reported efficient and inexpensive catalyst that can be used to catalyze the degradation of organic pollutants. For example, Lin KYA et al. (Zeolitic Imidazole Framework-67 (ZIF-67) as a heterogeneous catalyst to activate peroxymonosulfate for degradation of Rhodamine B inwater[J].Journal of the Taiwan Institute of Ch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/28B01J35/06B01J35/10C02F1/72C02F101/30C02F101/34C02F101/36C02F101/38
CPCC02F1/725B01J31/28C02F2101/308C02F2101/40C02F2101/38C02F2101/36C02F2101/34B01J2531/845B01J2531/16B01J2531/0213B01J35/58B01J35/61
Inventor 蔡宁刘明明喻发全王建芝刘唯冯小娟陈梅薛亚楠
Owner WUHAN INSTITUTE OF TECHNOLOGY
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