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Preparation method and application of magnetic graphene oxide composite material

A technology of composite materials and stone oxide, which is applied in the field of preparation of magnetic graphene oxide composite materials, can solve the problems of small adsorption capacity and achieve the effects of increased adsorption capacity, low use cost and energy consumption, and high adsorption capacity

Active Publication Date: 2016-03-09
SUZHOU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0022] The present invention also provides the use of the above-mentioned magnetic graphene oxide composite material for the adsorption of heavy metal ions and organic pollutants in water, so as to solve the problem of low adsorption capacity of heavy metal ions and organic pollutants in water and the problem of multi-substance adsorption

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The preparation method of embodiment 1 magnetic graphene oxide composite material

[0050] (1) Disperse 1g of graphite oxide in 500mL of ethylene glycol solution, and ultrasonically disperse it for 4h to prepare highly dispersible graphene oxide;

[0051] (2) Disperse 0.5g of ferric chloride powder in 500mL of ethylene glycol solution, and ultrasonically disperse for 4h;

[0052] (3) Mix 250mL of the two solutions in step 1) and step 2) according to the volume ratio of 1:1, add a small amount of acrylic acid as a crosslinking agent, and add ammonia water to pH = 10, stir rapidly for 30min, then slowly After stirring at high speed for 4 hours, wash 3 times with super water;

[0053] (4) The product of step 3) was placed in 500 mL of potassium ethyl xanthate with a mass percentage of 20 wt%, and sulfuric acid was added to adjust the pH of the solution to about 3, and ultrasonic-assisted magnetic stirring was used for 12 h;

[0054] (5) After filtering the product of ste...

Embodiment 2

[0055] The preparation method of embodiment 2 magnetic graphene oxide composite material

[0056] (1) Disperse 2g of graphite oxide in 1000mL of diethylene glycol solution and ultrasonically disperse for 4h to prepare highly dispersible graphene oxide;

[0057] (2) Disperse 1 g of ferric salt ferric sulfate powder in 500 mL of diethylene glycol solution, and disperse it ultrasonically for 4 h;

[0058] (3) Take 250 mL of each of the two solutions in step 1) and step 2) and mix them according to the volume ratio of 1:1, add a small amount of methacrylic acid as a crosslinking agent, and add ammonia water to pH = 10, and stir rapidly for 30 minutes. After stirring at a slow speed for 6 hours, wash 4 times with super water;

[0059] (4) The product of step 3) was placed in 500 mL of sodium ethyl xanthate with a mass percentage of 25%, while hydrochloric acid was added to adjust the pH of the solution to about 3, and ultrasonic-assisted magnetic stirring was used for 24 hours;

...

Embodiment 3

[0061] Embodiment 3 The preparation method of magnetic graphene oxide composite material

[0062] (1) Disperse 5g of graphite oxide in 2000mL of isoamyl alcohol solution and ultrasonically disperse it for 8h to prepare highly dispersible graphene oxide;

[0063] (2) Disperse 2.5g of ferric nitrate powder in 1000mL of isoamyl alcohol solution and ultrasonically disperse for 8h;

[0064] (3) Take 500 mL of each of the two solutions in step 1) and step 2) and mix them according to the volume ratio of 1:1, add a small amount of glyoxal as a crosslinking agent, and add ammonia water to pH = 10, and stir rapidly for 30 minutes. After stirring at a slow speed for 12 hours, wash 5 times with super water;

[0065] (4) The product of step 3) was placed in 1000 mL of potassium butyl xanthate with a mass ratio of 50%, while nitric acid was added to adjust the pH of the solution to about 3, and ultrasonic-assisted magnetic stirring was used for 72 hours;

[0066] (5) After filtering the ...

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Abstract

The invention discloses a magnetic graphene oxide composite material, belonging to carbon matrix composite materials, in particular relates to a preparation method and application of the magnetic graphene oxide composite material. The preparation method of the magnetic graphene oxide composite material comprises the following steps: dispersing graphite oxide and ferric salt into a solution for ultrasonic mixing; then adding a cross-linking agent; after filtration and washing, putting into an alkyl xanthic acid saline solution; after filtration, washing and drying to obtain the material. The magnetic graphene oxide composite material is used for removing heavy metal ions and / or organic pollutant in the water. In conclusion, the preparation method provided by the invention is simple, safe and environment-friendly, is low in price and adopts easily available raw materials, and is easy to carry out industrial production. The prepared composite material has high adsorption efficiency on heavy metal ions and organic pollutant in water and strong capacity of resisting disturbance, can carry out multicomponent adsorption at the same time, is high in recycle utilization rate and is suitable for industrialization popularization and application.

Description

technical field [0001] The invention belongs to magnetic carbon-based composite materials, in particular to a preparation method and application of magnetic graphene oxide composite materials. Background technique [0002] The discharge of heavy metals in industrial wastewater is becoming increasingly serious. According to the data of the State Environmental Protection Administration, in 2013, the discharge of heavy metals mercury, cadmium, hexavalent chromium, total chromium and lead in industrial wastewater nationwide was 0.8 tons, 17.9 tons, and 58.1 tons respectively. , 161.9 tons and 74.1 tons, petroleum emissions were 17,400 tons, and volatile phenol emissions were 1,259.1 tons. In terms of pollution indicators, mercury ranks second in the frequency of exceeding standards, accounting for 27.8%. [0003] As an important chemical raw material, mercury has the characteristics of persistence, easy migration, high bioaccumulation and biotoxicity, and is a toxic environment...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/28B01J20/30C02F1/28C02F1/62
CPCB01J20/20B01J20/28009C02F1/288C02F2101/20C02F2101/30
Inventor 郭永福邓娟朱君妍周彩云周超
Owner SUZHOU UNIV OF SCI & TECH
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