Microporous rare earth cluster metal organic anion framework and preparation method and application thereof

An anion framework and metal-organic technology, applied in the field of metal-organic anion framework and its preparation, can solve the problems of complex dye wastewater treatment, etc., and achieve the effect of simple preparation method and great application prospect

Active Publication Date: 2016-02-17
芜湖数字信息产业园有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] China is now the world's largest dyestuff producer, with an annual dyestuff output of 150,000 tons. Environmental pollution is very serious. With the increasingly complex structur

Method used

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  • Microporous rare earth cluster metal organic anion framework and preparation method and application thereof
  • Microporous rare earth cluster metal organic anion framework and preparation method and application thereof
  • Microporous rare earth cluster metal organic anion framework and preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0020] Rare earth cluster metal organic anion framework of embodiment 1 microporous

[0021] 0.0225mmol of Eu(NO 3 ) 3 , 0.0225mmol of 4,4'-biphenyldicarboxylic acid, 0.0675mmol of o-fluorobenzoic acid, 2ml of N,N-dimethylformamide (DMF), 0.5ml of ethanol were added to a glass bottle with a volume of 5ml, At room temperature, stir for 30 minutes. Seal the glass bottle and place in the oven. Heat to make the temperature of the oven rise from room temperature to 378K, and the heating rate is 5°C·min -1 , kept at this temperature for 36 hours. at 5℃·h -1 Slowly cool down to room temperature at a cooling rate of 0.5 to obtain light yellow cubic crystals; wash with N,N'-dimethylformamide (DMF) solution, filter and dry in the air, which is the target product microporous rare earth cluster metal organic Anionic framework with a yield of 68%.

[0022] The structure of the microporous rare earth cluster metal organic anion skeleton synthesized by the present invention is as foll...

Embodiment 2

[0023] Example 2 A Microporous Rare Earth Cluster Metal Organic Anion Framework Selectively Adsorbs Organic Dyes

[0024] Method: The microporous rare-earth cluster metal-organic anion framework prepared in Example 1 was used as an adsorption matrix to adsorb mixed organic dyes.

[0025] 1) Dissolve the organic anionic dye methyl orange and the organic cationic dye methylene blue in a DMF solution to obtain methyl orange and methylene blue concentrations of 5×10 -5 Mixed dye solution of M.

[0026] Take 5ml of the mixed dye solution, add 20mg of microporous rare earth cluster metal organic anion framework crystals, and soak at room temperature. The change of dye concentration in the mixed dye solution was detected by UV-vis spectroscopy. The result is as Figure 5 As shown, the peaks in the figure from top to bottom are 0min, 10min, 30min, 1h, 2h, 3h, 4h, 6h, 24h. Depend on Figure 5 It can be seen that the characteristic peak intensity of methylene blue at 650nm in the m...

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Abstract

The invention relates to a microporous rare earth cluster metal organic anion framework and a preparation method and application thereof. According to the technical scheme, the preparation method comprises the steps that RE(NO<3>)<3>/4, 4'-diphenyldicarboxylic acid, o-fluorobenzoic acid, N, N-dimethyl formamide and ethanol are added into a container and stirred at the normal temperature; the container is sealed and then placed into a drying oven, and the container is maintained for 1-2 days at the temperature of 300-400 K; the mixture is cooled slowly to the room temperature and left standing for 20-30 hours, and crystals are obtained; N, N-dimethyl formamide is used for washing the mixture, filtration and drying are conducted, and a target product is obtained. The microporous rare earth cluster metal organic anion framework prepared through the preparation method can serve as an adsorption base material for adsorbing cation type organic dyestuff, and the cation organic dyestuff is separated in an efficient and selective mode.

Description

technical field [0001] The present invention relates to a metal organic anion framework and its preparation method and application, specifically, to a microporous rare earth cluster metal organic anion framework with cation exchange function and its preparation method, and its adsorption of organic dyes and separate applications. Background technique [0002] In the field of host-guest chemistry, metal-organic frameworks (MOFs), as a new molecular functional material, have been studied across inorganic chemistry, organic chemistry, physical chemistry, materials chemistry, crystal engineering, topology, supramolecular chemistry and coordination. chemistry and other disciplines. As a product of interdisciplinary fields, the design, synthesis and performance research of metal-organic framework compounds has developed into one of the very active research fields in recent years. Recently, charged MOFs have attracted increasing interest by charge-induced ion-exchange processes, ...

Claims

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Application Information

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IPC IPC(8): C07F5/00B01J20/22B01J20/30C02F1/28
CPCB01J20/226C02F1/285C07F5/003
Inventor 韩正波高明亮曹小漫
Owner 芜湖数字信息产业园有限公司
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