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Porous ferric oxide-titanium oxide-activated carbon complex fiber membrane and preparation method

A composite fiber membrane and activated carbon technology, applied in chemical instruments and methods, fiber treatment, special compound water treatment, etc., can solve the problems of unsatisfactory water treatment performance and recyclability, difficulty in uniform control of composite material structure, and particle participation in reactions Probability reduction and other issues, to achieve the effect of simple and controllable equipment, easy large-scale production, and fast processing speed

Inactive Publication Date: 2017-01-25
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although activated carbon fiber has good adsorption and filtration performance, in fact, this technology can only transfer pollutants and cannot completely remove them, so it is easy to cause secondary pollution
It has been reported that TiO 2 Or iron oxide combined with activated carbon or activated carbon fiber, using the adsorption properties of activated carbon and the photocatalytic degradation performance of oxides to improve the effect of water treatment, but due to the defects of the preparation method, the oxides are either agglomerated and distributed on the surface of carbon fibers, or hidden in carbon fibers In the body, it is difficult to uniformly control the structure of the composite material; the particles adhered to the surface are easy to fall off, and the probability of the particles in the body participating in the reaction is reduced, so the water treatment performance and recyclability are not ideal

Method used

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  • Porous ferric oxide-titanium oxide-activated carbon complex fiber membrane and preparation method
  • Porous ferric oxide-titanium oxide-activated carbon complex fiber membrane and preparation method
  • Porous ferric oxide-titanium oxide-activated carbon complex fiber membrane and preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Dissolve 4g of polyacrylonitrile PAN and 1g of polyvinyl alcohol PVA in 40g of N,N-dimethylformamide DMF solution, and fully stir to form a transparent sol. At the same time, 0.02 mol of tetrabutyl titanate and 0.02 mol of ferric nitrate were mixed and dissolved in the DMF solution, and fully stirred to form a transparent solution. The two solutions were uniformly mixed and stirred on a magnetic stirrer for 12 hours to obtain a precursor sol with a certain viscosity.

[0029] (2) Inject the precursor sol into the syringe, apply a voltage of 20kV to carry out electrospinning, and collect it by a roller. The distance between the roller and the nozzle is 20cm, and the speed is set at 150r / min. After spinning, the precursor fiber film is obtained. .

[0030] (3) After pretreatment of the precursor fiber membrane in a muffle furnace at 280°C for 4 hours, place it between two graphite plates, put it in a nitrogen atmosphere furnace and bake it at 750°C for 5 hours to obt...

Embodiment 2

[0033](1) Mix and dissolve 4g PAN and 2g PVP in 40g N,N-dimethylformamide DMF solution, stir well to form a transparent sol. At the same time, 0.045 mol of tetrabutyl titanate and 0.01 mol of ferric nitrate were mixed and dissolved in the DMF solution, and fully stirred to form a transparent solution. The two solutions were uniformly mixed and stirred on a magnetic stirrer for 12 hours to obtain a precursor sol with a certain viscosity.

[0034] (2) Inject the precursor sol into the syringe, apply a voltage of 25kV to carry out electrospinning, and collect it by a roller. The distance between the roller and the nozzle is 30cm, and the speed is set at 200r / min. After spinning, the precursor fiber film is obtained. .

[0035] (3) After the precursor fiber membrane was pretreated in a muffle furnace at 280°C for 4 hours, it was placed between two graphite plates and baked in a nitrogen atmosphere furnace at 800°C for 4 hours to obtain nanostructured porous iron oxide -Titanium ...

Embodiment 3

[0038] (1) Dissolve 4g of polyacrylonitrile PAN in 40g of N,N-dimethylformamide DMF solution, stir well to form a transparent sol. At the same time, 0.01 mole of tetrabutyl titanate and 0.06 mole of ferric nitrate were mixed and dissolved in the DMF solution, and fully stirred to form a transparent solution. The two solutions were uniformly mixed and stirred on a magnetic stirrer for 12 hours to obtain a precursor sol with a certain viscosity.

[0039] (2) Inject the precursor sol into the syringe, apply a voltage of 23kV to carry out electrospinning, and collect it by the roller. The distance between the roller and the nozzle is 25cm, and the speed is set at 180r / min. After spinning, the precursor fiber film is obtained. .

[0040] (3) After the precursor fiber membrane was pretreated in a muffle furnace at 280°C for 4 hours, it was placed between two graphite plates and baked in a nitrogen atmosphere furnace at 700°C for 10 hours to obtain nanostructured porous iron oxide ...

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Abstract

The invention belongs to the technical field of functional fiber materials, and provides a porous ferric oxide-titanium oxide-activated carbon complex fiber membrane and a preparation method thereof. The porous ferric oxide-titanium oxide-activated carbon complex fiber membrane is formed by porous fibers formed by three phases: ferric oxide, titanium dioxide and activated carbon, and has the characteristics of photocatalysis, adsorption and filtration. Meanwhile, the invention also provides a preparation method of a nanocrystalline iron oxide / titanium oxide / activated carbon complex fiber membrane with the characteristics of high photocatalysis and adsorption, and a three-phase complex nanofiber membrane is obtained through an electrostatic spinning method and hot pressed sintering processing, and is controllable in structure, simple in preparation process and easy for large-scale production; the fiber membrane can be applied in organic and heavy metal wastewater treatment, is high in treatment efficiency, and can be recycled.

Description

technical field [0001] The invention belongs to the technical field of functional fiber materials and provides a porous iron oxide-titanium oxide-activated carbon composite fiber membrane and a preparation method. Background technique [0002] The pillar industries such as printing and dyeing, medicine, chemical industry, papermaking, and brewing, which are characterized by high consumption of water resources, high pollution, and high discharge, have caused large-scale water pollution. It contains a variety of organic poisons that are difficult to degrade and remains in the water environment. It has certain bioaccumulation and "carcinogenic, teratogenic, and mutagenic" toxicity, which has brought serious threats to the water environment. With the rapid development of the electronic information industry, environmental and ecological problems caused by heavy metal wastewater pollution mainly caused by chromium, copper, nickel, cadmium, zinc, mercury, and arsenic plasma have al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D69/02B01D67/00B01D71/02B01D69/06C02F1/44C02F1/30C02F1/28D04H1/728D04H1/4382D01D5/00C02F101/30C02F101/20
CPCB01D69/02B01D67/0039B01D69/06B01D71/021B01D71/024B01D2325/10B01D2325/12C02F1/283C02F1/30C02F1/44C02F2101/20C02F2101/30C02F2305/10D01D5/003D01D5/0076D01D5/0092D04H1/4382D04H1/728
Inventor 韩翀景茂祥沈湘黔乔冠军
Owner JIANGSU UNIV
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