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Fiber membrane capable of adsorbing and removing heavy metal ions and photocatalytically degrading organic pollutants and its preparation method

A technology for organic pollutants and heavy metal ions, applied in the direction of alkali metal compounds, alkali metal oxides/hydroxides, water pollutants, etc., to achieve the effect of not easy to lose, full contact, and small usage

Active Publication Date: 2019-05-17
津菲盐城节能环保材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] In view of the deficiencies in the preparation and use of existing fiber adsorption materials, membrane materials and photocatalytic materials, this patent needs to solve the following problems:

Method used

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  • Fiber membrane capable of adsorbing and removing heavy metal ions and photocatalytically degrading organic pollutants and its preparation method
  • Fiber membrane capable of adsorbing and removing heavy metal ions and photocatalytically degrading organic pollutants and its preparation method
  • Fiber membrane capable of adsorbing and removing heavy metal ions and photocatalytically degrading organic pollutants and its preparation method

Examples

Experimental program
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Embodiment 1

[0060] A method for preparing a fiber membrane capable of adsorbing and removing heavy metal ions and photocatalytically degrading organic pollutants, the steps comprising:

[0061] (1) Dissolve polyacrylonitrile and N,N-dimethylformamide DMF with a mass ratio of 1:3, stir and dissolve at 30°C for 5 hours, and the molecular weight of polyacrylonitrile is 85,000;

[0062] (2) Add the amination reaction reagent diethylenetriamine to the above solution, the mass ratio of polyacrylonitrile to diethylenetriamine is 1:3, carry out the amination reaction at 70°C and 200rpm under stirring conditions for 2h, and cool down.

[0063] (3) Add nano-titanium dioxide to the above solution, the mass ratio of which to polyacrylonitrile is 1:9, obtain the electrospinning solution after ultrasonic dispersion for 24h, move the liquid matrix into the syringe of the electrospinning machine, adjust the diameter of the spinneret, Voltage, spinning rate, humidity, receiving distance and drum speed wer...

Embodiment 2

[0072] A method for preparing a fiber membrane capable of adsorbing and removing heavy metal ions and photocatalytically degrading organic pollutants, the steps comprising:

[0073] (1) Dissolve polyacrylonitrile and N,N-dimethylformamide DMF with a mass ratio of 1:4, stir and dissolve at 40°C for 8 hours, and the molecular weight of polyacrylonitrile is 90,000;

[0074] (2) Add the amination reaction reagent diethylenetriamine to the above solution, the mass ratio of polyacrylonitrile to diethylenetriamine is 1:3, carry out the amination reaction at 80°C and 200rpm under stirring conditions for 8h, and cool down.

[0075] (3) Add nano-titanium dioxide to the above solution, its mass ratio to polyacrylonitrile is 1:4, obtain the electrospinning solution after ultrasonic dispersion for 24h, move the liquid matrix into the syringe of the electrospinning machine, adjust the diameter of the spinning wire, Voltage, spinning rate, humidity, receiving distance and drum speed were use...

Embodiment 3

[0084] A method for preparing a fiber membrane capable of adsorbing and removing heavy metal ions and photocatalytically degrading organic pollutants, the steps comprising:

[0085] (1) Dissolve polyacrylonitrile and N,N-dimethylformamide DMF with a mass ratio of 1:9, stir and dissolve at 40°C for 8 hours, and the molecular weight of polyacrylonitrile is 95,000;

[0086] (2) Add the amination reaction reagent diethylenetriamine to the above solution, the mass ratio of polyacrylonitrile to the reaction reagent is 1:3, carry out the amination reaction at 70°C and 200rpm under the condition of stirring for 2h, and cool down.

[0087](3) Add nano-titanium dioxide to the above solution, its mass ratio to polyacrylonitrile is 1:4, obtain the electrospinning solution after ultrasonic dispersion for 24h, move the liquid matrix into the syringe of the electrospinning machine, adjust the diameter of the spinning wire, Voltage, spinning rate, humidity, receiving distance and drum speed w...

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Abstract

The invention discloses a fibrous membrane capable of removing heavy metal ions through adsorption and degrading organic pollutants through photocatalysis and a preparation method of the fibrous membrane and belongs to the field of synthesis and application of an environment functional material. Polyacrylonitrile is taken as a raw material, a liquid substrate is prepared through solid-phase graft copolymerization and amination, then a nano photocatalytic material is added, and the novel anti-pollution composite functional fibrous membrane is prepared through electrostatic spinning. The synthetic method is simple to operate, an organic solvent and an animation reagent can be saved, the prepared anti-pollution composite functional fibrous membrane is loaded with a nano photocatalyst, so that not only can multiple heavy metal ions in water be removed through filtering and adsorption, but also the organic pollutants in water can be degraded through photocatalysis, the anti-pollution performance of the membrane is greatly improved, and the fibrous membrane and the preparation method have the wide application prospect.

Description

Technical field: [0001] The invention discloses an amine-modified fiber membrane loaded with nano photocatalytic materials and a preparation method thereof, in particular to a fiber membrane capable of absorbing and removing heavy metal ions and photocatalytically degrading organic pollutants and a preparation method thereof, belonging to the field of environmental functional materials . Background technique: [0002] In recent years, adsorption materials, membrane materials and photocatalytic materials have been widely used in the field of water pollution control. Adsorption materials usually use high specific surface area, porous structure and surface functional groups to absorb pollutants in water, and membrane materials usually use membrane filtration methods. The interception of pollutants in water is realized, while the photocatalytic material uses light as energy to degrade and remove organic pollutants in water through the catalysis of catalysts. However, the existi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D71/78B01D71/42B01D69/02B01D67/00B01J20/26B01J20/28B01J20/30B01J31/38C02F1/28C02F1/44C02F1/32C02F101/20C02F101/30
Inventor 王津南王达道吴燕
Owner 津菲盐城节能环保材料科技有限公司