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Aluminum-based porous coordination polymer and application thereof in adsorption of organic dyes in water

A coordination polymer and aluminum-based porous technology, which is applied in the direction of adsorption of water/sewage treatment, water pollutants, and other chemical processes, can solve the problems of low adsorption capacity, adsorption rate, lack of selectivity, and small specific surface. Achieve the effect of high adsorption capacity, fast adsorption rate and high crystallinity

Inactive Publication Date: 2020-04-28
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The shortcomings of traditional adsorption materials such as activated carbon and zeolite are that the specific surface is small, so the adsorption capacity is low, and the adsorption rate and selectivity are also lacking.

Method used

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  • Aluminum-based porous coordination polymer and application thereof in adsorption of organic dyes in water
  • Aluminum-based porous coordination polymer and application thereof in adsorption of organic dyes in water
  • Aluminum-based porous coordination polymer and application thereof in adsorption of organic dyes in water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] An aluminum-based porous coordination polymer, the preparation method of which is as follows:

[0045] S1. Put 1.45g of aluminum chloride hexahydrate and 1.26g of 1,2,4-benzenetricarboxylic acid into the polytetrafluoroethylene lining of the hydrothermal reaction kettle, and then add 5mL of N,N-dimethylformaldehyde Amide (DMF) and 20mL of deionized water are mixed as a mixed solvent, and fully stirred to disperse to obtain a clear solution.

[0046] S2. Put the hydrothermal reaction kettle in an oven, react at 120°C for 12 hours, and then slowly lower to room temperature to obtain a white precipitate, which is collected by centrifugation, washed three times with DMF, and then washed three times with methanol. After the mother liquor was removed by centrifugation, the product was obtained by vacuum drying at 80°C with a yield of 65%.

Embodiment 2

[0048] An aluminum-based porous coordination polymer, the preparation method of which is as follows:

[0049] S1. Put 1.45g of aluminum chloride hexahydrate and 1.01g of 1,2,4-benzenetricarboxylic acid into the polytetrafluoroethylene lining of the hydrothermal reaction kettle, and then add 5mL of N,N-dimethylformaldehyde Amide (DMF) and 25mL of deionized water are mixed as a mixed solvent, and fully stirred to disperse to obtain a clear solution.

[0050] S2. Put the hydrothermal reaction kettle in an oven, react at 125°C for 10 hours, and then slowly lower to room temperature to obtain a white precipitate, which is collected by centrifugation, washed three times with DMF, and then washed three times with methanol. After the mother liquor was removed by centrifugation, the product was obtained by vacuum drying at 80°C.

Embodiment 3

[0052] An aluminum-based porous coordination polymer, the preparation method of which is as follows:

[0053] S1. Put 1.45g of aluminum chloride hexahydrate and 1.51g of 1,2,4-benzenetricarboxylic acid into the polytetrafluoroethylene lining of the hydrothermal reaction kettle, and then add 5mL of N,N-dimethylformaldehyde Amide (DMF) and 15mL of deionized water are mixed as a mixed solvent, and fully stirred to disperse to obtain a clear solution.

[0054] S2. Put the hydrothermal reaction kettle in an oven, react at 115°C for 15 hours, and then slowly lower to room temperature to obtain a white precipitate, which is collected by centrifugation, washed three times with DMF, and then washed three times with methanol. After the mother liquor was removed by centrifugation, the product was obtained by vacuum drying at 80°C.

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Abstract

The invention discloses an aluminum-based porous coordination polymer and application thereof in adsorption of organic dyes in water, and the aluminum-based porous coordination polymer is prepared from Al (III) ions and 1, 2, 4-trimesic acid through solvothermal reaction. The brand-new aluminum-based porous coordination polymer is synthesized by reacting the 1, 2, 4-trimesic acid with the Al (III)ions for the first time, has higher crystallinity and high specific surface area, can keep stable in water at below 450 DEG C, can be used for adsorbing methylene blue and malachite green in water, and is high in adsorption capacity and high in adsorption capacity. The adsorption rate is high, certain selectivity is achieved, and a positively charged organic dye is selectively adsorbed. The aluminum-based porous coordination polymer has high chemical stability, the aluminum element is the metal element with the highest content in the earth, and the application prospect is very good when the aluminum-based porous coordination polymer is applied to water treatment. The invention also provides the application of the aluminum-based porous coordination polymer in adsorption of the organic dyesin water.

Description

technical field [0001] The invention relates to the technical field of metal-organic coordination polymers, in particular to an aluminum-based porous coordination polymer and its application in absorbing organic dyes in water. Background technique [0002] Organic dyes are widely used in printing and dyeing, papermaking, food, printing, and plastic industries, and thus produce a large amount of dye wastewater. There are many kinds of dyes in these dye wastewaters, which are usually difficult to be biodegraded and have teratogenic and carcinogenic properties. The discharge of dye wastewater seriously endangers the ecological environment and human health. Therefore, the development of dye wastewater treatment technology is an important aspect of environmental pollution control. At present, the removal methods of organic dyes in wastewater mainly include chemical redox method, photocatalytic degradation, biodegradation, membrane separation and adsorption, etc. Among them, the...

Claims

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Application Information

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IPC IPC(8): C08G83/00B01J20/22B01J20/30C02F1/28C02F101/30
CPCB01J20/226B01J2220/4806B01J2220/4812C02F1/285C02F2101/308C08G83/008
Inventor 郑盛润高勇辛颖儿谭颖
Owner SOUTH CHINA NORMAL UNIVERSITY
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