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Silver-azotetrazole metal organic framework material as well as preparation method and application thereof

A metal-organic framework and azotetrazole technology, which is applied in organic chemistry, chemical instruments and methods, organic compound/hydride/coordination complex catalysts, etc., to achieve good catalytic effect, simple preparation method and stable process

Active Publication Date: 2015-01-07
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, metal organic framework materials with tetrazole and its derivatives and metal silver ions as the central transition metal have not been reported yet.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] A, material preparation

[0059] Weigh 0.2mmol of silver nitrate in the reaction bottle, add 4ml of water, stir on a magnetic stirrer at a speed of 400rpm for 15 minutes to obtain a metal silver salt solution, then add 30mmol of ethylenediamine dropwise, and continue stirring for 30min until mixed Uniformly, obtain a kind of reaction solution 1;

[0060] Weigh 0.3 mmol of 5,5′-azotetrazole into a reaction flask, add 3 ml of methanol, and stir evenly to obtain a reaction solution 2;

[0061] Mix 2ml of water and 2ml of methanol evenly to obtain a buffer solution;

[0062] B, Diffusion method to prepare the target product

[0063] Slowly put the reaction solution 1 obtained in step A into the bottom layer of the glass tube, then slowly place the buffer solution obtained in step A on the reaction solution 1, then slowly place the reaction solution 2 obtained in step A on the buffer solution, and then seal In the glass tube, the pH value of the reaction liquid system is ...

Embodiment 2

[0066] A, material preparation

[0067] Weigh 0.3mmol of silver perchlorate in a reaction flask, add 5ml of water, stir on a magnetic stirrer with a rotating speed of 400rpm for half an hour to obtain a metal silver salt solution, then dropwise add 30mmol of ethylenediamine, and continue stirring for a Hour to mix uniformly, obtain a kind of reaction solution 1;

[0068] Weigh 0.5mmol of 5,5′-azotetrazole into a reaction flask, add 5ml of ethanol, and stir evenly to obtain a reaction solution 2;

[0069] Mix 2ml of water and 2ml of ethanol evenly to obtain a buffer solution;

[0070] B, Diffusion method to prepare the target product

[0071] Slowly put the reaction solution 1 obtained in step A into the bottom layer of the glass tube, then slowly place the buffer solution obtained in step A on the reaction solution 1, then slowly place the reaction solution 2 obtained in step A on the buffer solution, and then seal In the glass tube, the pH value of the reaction liquid syst...

Embodiment 3

[0074] Photodegradable organic dye rhodamine 6G (molecular formula: C 28 h 31 N 2 o 3 Cl):

[0075] Prepare an aqueous solution of a certain amount of organic dye rhodamine 6G (1×10-5 mol / L). The silver-azotetrazole metal organic framework material prepared in Example 1 was ground and pulverized, and 5 mg of the material was added into 10 mL of an organic dye aqueous solution, and then ultrasonicated for 5 minutes, and stirred at a constant speed overnight in a dark environment (establishing an organic dye Adsorption equilibrium with the catalyst surface). The above solution was irradiated using a 300W high-pressure mercury lamp ultraviolet light source. During the irradiation period, a series of fixed amounts of the suspension were collected after being filtered through a membrane filter (pore size 0.022 mm), and the filtrate was analyzed by a UV-visible spectrophotometer to identify the real-time concentration. The concentration of the organic dye is measured by the ab...

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PUM

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Abstract

The invention discloses a preparation method of a silver-azotetrazole metal organic framework material and an application of the silver-azotetrazole metal organic framework material in organic dye photodegradation. The preparation method comprises the following steps: by adopting a simple solvent diffusion method, reacting metal silver salt with ethylenediamine to prepare a stable metal solution, and reacting the solution with an organic solution of 5,5'-azotetrazole to prepare the silver-azotetrazole metal organic framework material with photodegradation efficiency. The material disclosed by the invention can be used for decomposing 86.3% of an organic dye namely rhodamine 6G within 60 minutes under the irradiation of ultraviolet light. The material is simple in preparation process and high in photocatalytic degradation efficiency of organic dye, so that the material is an organic pollutant photodegradation material with great potential.

Description

technical field [0001] The invention relates to a metal-organic framework material, in particular to a silver-azotetrazole metal-organic framework material capable of photocatalytically degrading organic dyes and a preparation method thereof. Background technique [0002] Metal-Organic Framework (MOF) refers to a metal-organic framework material with a periodic network structure formed by self-assembly of organic ligands and metal ions. It is a metal-organic framework constructed by coordination between metal ions and organic linkers. It is different from oxygen-silicon inorganic polymers and general organic polymers. It combines the advantages of these materials and not only has Due to their diverse and fascinating topological structures, and their potential applications in optics, magnetism, adsorption separation, chiral resolution, ion exchange, gas storage, catalysis and other fields, metal-organic frameworks are receiving great attention worldwide. [0003] With the ad...

Claims

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Application Information

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IPC IPC(8): C07D257/04B01J31/22A62D3/176A62D101/26A62D101/28A62D101/22
CPCB01J31/1815C02F1/32C02F2103/14C07D257/04
Inventor 张祺陈东何璇周小清李洪珍杨宗伟李金山
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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