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Magnetic iron oxide-graphene nano composite material for removing dye pollution of water body as well as preparation method and application of magnetic iron oxide-graphene nano composite material

A technology of nanocomposite materials and magnetic iron oxide, which is applied in the direction of magnetic materials, diamagnetic/paramagnetic materials, water pollutants, etc., can solve the problems of limited popularization, non-recyclable use, and high cost of use, and achieves environmental friendliness and has Effect of recycling and maintaining stability

Inactive Publication Date: 2020-05-08
TONGJI UNIV
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Problems solved by technology

However, the adsorbents used at this stage may have high cost, produce more sludge, or cannot be recycled, which greatly limits their popularization and use.

Method used

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  • Magnetic iron oxide-graphene nano composite material for removing dye pollution of water body as well as preparation method and application of magnetic iron oxide-graphene nano composite material
  • Magnetic iron oxide-graphene nano composite material for removing dye pollution of water body as well as preparation method and application of magnetic iron oxide-graphene nano composite material
  • Magnetic iron oxide-graphene nano composite material for removing dye pollution of water body as well as preparation method and application of magnetic iron oxide-graphene nano composite material

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Effect test

Embodiment 1

[0033] (1) Dissolve 0.0375g of graphene oxide (GO) in 15ml of deionized water for ultrasonication to fully disperse GO in deionized water.

[0034] (2) According to the mass ratio of graphene oxide and ferric chloride, it is 1:30~40 to take ferric chloride (take by weighing 1.352g ferric chloride in this embodiment), according to the quality of ferric chloride and sodium citrate The ratio is 7-8:1 Weigh sodium citrate (weigh 0.1837g sodium citrate in this example), mix 1.352g ferric chloride and 0.1837g sodium citrate, and prepare 5ml mixed solution.

[0035] (3) Slowly drop the GO mixed solution into the mixed solution under ultrasonic conditions.

[0036] (4) After ultrasonication for 30 minutes, adjust the pH of the final solution to about 10 with 5 mol NaOH solution (the pH can be between 9 and 11, and the preferred pH in this embodiment is around 10), and then continue ultrasonication for 30 minutes.

[0037] (5) Transfer the final solution to a polytetrafluoroethylene-l...

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Abstract

The invention relates to a magnetic iron oxide-graphene nano composite material for removing dye pollution of a water body as well as a preparation method and application of the magnetic iron oxide-graphene nano composite material. The preparation method comprises the following steps: dispersing graphene oxide into deionized water, adding the graphene oxide into a mixed solution of ferric chlorideand sodium citrate, fully mixing, regulating the pH value to 9-11, transferring into a reaction kettle, and carrying out hydrothermal reaction so as to obtain a gamma-Fe2O3@rGO nano composite material. Compared with the prior art, according to the gamma-Fe2O3@rGO nano composite material disclosed by the invention, gamma-Fe2O3 is uniformly distributed on the surface of the GO; and an interlayer composite structure formed by the gamma-Fe2O3 and the GO is beneficial to maintaining the stability of the material, and has the inherent characteristics of graphene and magnetic iron oxide nanoparticles, so that the composite material has a larger specific surface area and better adsorption performance, and has the necessity and feasibility of recycling.

Description

technical field [0001] The invention belongs to the technical field of water pollution control, and relates to the preparation of magnetic iron oxide graphene nanocomposites in water pollution control, in particular to a magnetic iron oxide-graphene (γ-Fe 2 o 3 @rGO) nanocomposites and their preparation methods and applications. Background technique [0002] my country's printing and dyeing industry is developed, and the annual discharge of textile wastewater is about 2.37×10 9 t. In the past few decades, people have studied many methods of treating printing and dyeing wastewater, which are mainly divided into chemical, biological, and physical categories. Chemical methods mainly include oxidation method, ion exchange method and electrochemical deposition method. However, the condition control process of these methods is cumbersome, the cost is large, and it is easy to cause secondary pollution. The biological method is relatively low in cost and less likely to cause se...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/28B01J20/30C02F1/28C02F1/48H01F1/00H01F41/00C02F101/30
CPCB01J20/06B01J20/205B01J20/28009C02F1/281C02F1/283C02F1/488C02F2101/308H01F1/0018H01F41/00
Inventor 刘爱荣李季郭婕
Owner TONGJI UNIV
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