Preparation of magnetic reduced graphene oxide composite material and method for removing quinolone antibiotics from water by the same

A technology of composite materials and quinolones, which is applied in the field of water treatment, can solve the problems of easy aggregation of magnetic nanoparticles, poor dispersion, and influence on the adsorption effect, and achieve the effect of easy separation, simple process, and low production equipment requirements

Inactive Publication Date: 2014-10-15
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the graphene magnetic nanocomposites prepared have many process steps, and the magnetic nanoparticles in the prepared graphene magnetic nanocomposites are easy to agglomerate and affect the adsorption effect, so the dispersion is not good.

Method used

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  • Preparation of magnetic reduced graphene oxide composite material and method for removing quinolone antibiotics from water by the same
  • Preparation of magnetic reduced graphene oxide composite material and method for removing quinolone antibiotics from water by the same
  • Preparation of magnetic reduced graphene oxide composite material and method for removing quinolone antibiotics from water by the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] (1) First add 0.025g of graphene oxide into 20ml of ethylene glycol, the concentration of graphene oxide is 1.25g / L, ultrasonic for 3 hours, so that the graphene oxide is evenly mixed in ethylene glycol.

[0050] (2) Dissolve 0.201g of sodium citrate in 15ml of ethylene glycol, the concentration of sodium citrate is 13.4mg / L, heat to 60°C, and let it react for 20 minutes.

[0051] (3) At room temperature, 0.1g FeCl 3 ·6H 2 O and 0.15 g of urea were dissolved into the sodium citrate and ethylene glycol mixed solution obtained in step (2) with the assistance of strong magnetic stirring to obtain the ethylene glycol mixed solution of iron salt and urea.

[0052] (4) The graphene oxide / ethylene glycol mixed solution obtained in step (1) and the ethylene glycol mixed solution of iron salt and urea obtained in step (3) were reacted for 1 hour. Then it was transferred to a 50 mL polytetrafluoroethylene-lined stainless steel reaction kettle, reacted at 180 °C for 8 hours, and...

Embodiment 2

[0056] (1) First add 0.025g of graphene oxide into 11ml of ethylene glycol, the concentration of graphene oxide is 2.27g / L, and sonicate for 3 hours to mix the graphene oxide in ethylene glycol evenly.

[0057] (2) Dissolve 0.75g of sodium citrate in 15ml of ethylene glycol, the concentration of sodium citrate is 50.0g / L, heat to 80°C, and let it react for 50 minutes.

[0058] (3) At room temperature, 0.1g FeCl 3 ·6H 2 O and 0.325g urea were dissolved into the sodium citrate and ethylene glycol mixed solution obtained in step (2) under the assistance of strong magnetic stirring to obtain the ethylene glycol mixed solution of iron salt and urea.

[0059] (4) The graphene oxide / ethylene glycol mixed solution obtained in step (1) and the ethylene glycol mixed solution of iron salt and urea obtained in step (3) were reacted for 2.5 hours. Then it was transferred to a 50 mL polytetrafluoroethylene-lined stainless steel reactor, reacted at 200 °C for 12 hours, and then cooled natu...

Embodiment 3

[0063] (1) First add 0.025g of graphene oxide into 8ml of ethylene glycol, the concentration of graphene oxide is 3.13g / L, sonicate for 3 hours, so that graphene oxide is evenly mixed in ethylene glycol.

[0064] (2) Dissolve 1.302g of sodium citrate in 15ml of ethylene glycol, the concentration of sodium citrate is 86.8g / L, heat to 70°C, and let it react for 80 minutes.

[0065] (3) At room temperature, 0.1g FeCl 3 ·6H 2 O and 0.5 g of urea were dissolved into the sodium citrate and ethylene glycol mixed solution obtained in step (2) under the assistance of strong magnetic stirring to obtain the ethylene glycol mixed solution of iron salt and urea.

[0066] (4) The graphene oxide / ethylene glycol mixed solution obtained in step (1) and the ethylene glycol mixed solution of iron salt and urea obtained in step (3) were reacted for 4 hours. Then it was transferred to a 50 mL polytetrafluoroethylene-lined stainless steel reaction kettle, reacted at 220°C for 24 hours, and then c...

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Abstract

Belonging to the technical field of water treatment, the invention relates to preparation of a magnetic reduced graphene oxide composite material. The method includes: (1) placing graphene oxide into ethylene glycol to undergo ultrasonic treatment; (2) dissolving sodium citrate in ethylene glycol to undergo heating reaction; (3) mixing FeCl3.6H2O with urea, then dissolving the mixture into a sodium citrate/ethylene glycol solution under magnetic stirring to obtain an ethylene glycol mixed solution of the iron salt and urea; (4) stirring and mixing the graphene oxide/ethylene glycol mixed solution and the ethylene glycol mixed solution of the iron salt and urea obtained in the preceding step to undergo reaction, then transferring the reaction product into a reaction kettle to undergo heating reaction and cooling; and (5) subjecting the obtained material to centrifugation, washing and filtering, and freeze drying, thus obtaining the product involved in the invention. The magnetic reduced graphene oxide prepared by the method provided by the invention has the advantages of pure crystal phase, difficult agglomeration, and high magnetization degree. Also, the process is simple and has low requirements for production equipment. The invention also relates to a method for removing quinolone antibiotics from water by the composite material.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and relates to the preparation of a magnetically reduced graphene oxide composite material and a method for removing quinolone antibiotics from water. Background technique [0002] Pharmaceutical antibiotics have a wide range of applications in the fields of human medicine and agricultural product processing. As one of the five major classes of antibiotics (quinolones, β-lactams, macrolides, aminoglycosides, and tetracyclines), quinolones are frequently detected in the environment at high concentrations [1]. Residues of the aforementioned antibiotics through agricultural runoff and discharges from municipal wastewater treatment plants are also frequently detected in surface water, groundwater, and drinking water [2-3]. The widespread use of quinolones has become a serious concern because of their multiple potential side effects, including acute and chronic toxicity [4]. Quinolones antib...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30C02F9/12C02F1/28
Inventor 唐玉霖肖蓝王祎龙
Owner TONGJI UNIV
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