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Application of a Copper Metal Organic Framework Membrane in Catalytic Degradation of Organic Dyes

An organic framework, catalytic degradation technology, applied in the direction of organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, water pollutants, etc., to achieve no energy consumption, high catalytic performance, simple preparation process Effect

Active Publication Date: 2021-05-11
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in the research on MOFs membranes, MOFs membranes applied to gas separation are the most common, but MOFs membranes applied to water treatment are rarely reported.

Method used

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  • Application of a Copper Metal Organic Framework Membrane in Catalytic Degradation of Organic Dyes
  • Application of a Copper Metal Organic Framework Membrane in Catalytic Degradation of Organic Dyes

Examples

Experimental program
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Effect test

Embodiment 1

[0021] At room temperature, 2mmol Cu(NO 3 ) 2 ·3H 2 Dissolve O in 40mL DMF, stir until it is completely dissolved, then add 2mmol bpd to the solution, stir well, let the solution stand for 10min and then filter, put the obtained filtrate A in a sealable container jar middle. Select 20×10mm Al 2 o 3 , put it in anhydrous ethanol and ultrasonically clean it for 10 minutes, then dry it at 50°C and soak it in the above-mentioned sealable container jar. Take a 10ml glass test tube, fill it with 8ml ether, put it into a jar upright, and seal the jar well. About 7 days, Cu(II) metal-organic framework film can be obtained, the electron microscope picture is as follows figure 1 , The crystal particles are uniform spherical, and the particle diameter is about 2 μm.

Embodiment 2

[0023] The operation steps of Example 1 were repeated, except that the carrier was a graphite sheet of 20×10 mm. The results showed that the crystals constituting the metal-organic framework membrane were still spherical, but the diameter of the particles changed to about 1 μm.

Embodiment 3

[0025] Repeat the operation steps of Example 1, except that the carrier is a 20×10mm copper mesh. As a result, compared with Example 1, most of the crystals that make up the metal-organic framework membrane are spherical particles, and some fine blocks appear in it. shaped particles with a particle size of about 1 μm.

[0026] figure 1 It is the SEM picture of the sample obtained in Example 1. The spherical crystals form a dense film on the carrier, and the MOFs crystal particle size is about 1 μm. figure 2 The curves of sample catalytic degradation of organic dye methyl orange were prepared for Examples 1-3. The initial volume of the methyl orange solution was 125mL, and the concentration was 12ppm. At room temperature, a metal-organic framework membrane with an area of ​​20×10mm was taken and fixed in the methyl orange solution. It can be seen from the figure that the catalytic effect of MOFs crystal film is the best when graphite sheet is used as the carrier among the th...

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Abstract

The invention discloses the application of a copper metal organic framework film in catalytic degradation of organic dyes. The specific steps for the preparation of the organic framework membrane are as follows: (1) Dissolve the copper salt in an organic solvent, stir until it is completely dissolved, then add bpd to it, stir well, let it stand at room temperature, and then filter, and name the obtained filtrate as solution A (2) Solution A is placed in a sealable container; the carrier is selected and soaked in the above-mentioned solution A after pretreatment; (3) Solvent B is first loaded into an open container, and then the open container is placed upright Put the method into a sealable container, seal the sealable container again, and let it stand at room temperature to obtain a copper metal organic framework film. The metal-organic framework film layer is continuous, and the grain size of the MOFs is uniform. The preparation process of the invention is simple, does not require energy consumption, and has good stability in the production process. The prepared metal-organic framework membrane has high catalytic performance and can effectively degrade organic dyes, so it has potential application value in the treatment of dye wastewater pollution.

Description

technical field [0001] The invention relates to the technical field of metal-organic framework membranes, in particular to the application of a copper metal-organic framework membrane in catalytic degradation of organic dyes. Background technique [0002] Metal-organic frameworks (MOFs) are a new class of microporous and mesoporous multifunctional materials that have developed rapidly in recent years, and have broad application prospects in catalysis, molecular recognition, separation, and molecular devices. Membrane separation technology is a new type of separation technology. It has been developed rapidly in recent years because of its advantages such as environmental friendliness, small separation volume, low energy consumption, good separation performance, no secondary pollution, and simple operation. attention. Metal-organic framework materials and membrane separation technology have their own advantages. If the two are combined to achieve a "strong combination" to mak...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/16B01J35/02C02F1/30C02F101/30B01J35/00
CPCC02F1/30B01J31/1691C02F2101/308B01J35/00B01J35/30B01J35/33
Inventor 叶静陈桂娥毛修龙许海涛
Owner SHANGHAI INST OF TECH
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