Application of magnetic graphene carbon nanomaterial in aflatoxin adsorption

A technology of magnetic graphene and carbon nanomaterials, applied in the direction of selective adsorption, other chemical processes, ion exchange, etc., can solve the problems of small adsorption capacity, large amount of magnetic graphene adsorbent, long adsorption time, etc., and achieve cost-effective solution , avoid nutrient loss and save cost

Pending Publication Date: 2022-07-29
SHANDONG PEANUT RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The magnetic graphene prepared by this method has the disadvantages of large amount of adsorbent, small adsorption capacity and long adsorption time.

Method used

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  • Application of magnetic graphene carbon nanomaterial in aflatoxin adsorption
  • Application of magnetic graphene carbon nanomaterial in aflatoxin adsorption
  • Application of magnetic graphene carbon nanomaterial in aflatoxin adsorption

Examples

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Effect test

Embodiment 1

[0056] A magnetic graphene carbon nanomaterial for adsorbing aflatoxin, the preparation method is as follows:

[0057] (1) take by weighing the graphene oxide of 40mg and add 6mL ethylene glycol solution in a beaker that is placed with a magneton, and ultrasonically at room temperature until graphene oxide is completely dispersed in the ethylene glycol solution;

[0058] (2) Weigh 65 mg of anhydrous ferric chloride powder, add it to the solution of the above step (1), ultrasonicate at room temperature for 20 min to ensure that the ferric chloride is completely dispersed in the solution, then add 0.26 g of anhydrous sodium acetate, and at room temperature Stir for 0.5h.

[0059] (3) Pour the mixed solution of step (2) into the polytetrafluoroethylene liner of the high temperature reaction kettle, carry out solvothermal reaction, the reaction temperature is 180 ° C, and the reaction time is 4h. After the reaction is completed, take out the reaction kettle and cool to room tempe...

Embodiment 2

[0062] A magnetic graphene carbon nanomaterial for adsorbing aflatoxin, the preparation method is as follows:

[0063] (1) take by weighing the graphene oxide of 40mg and add 6mL ethylene glycol solution in a beaker that is placed with a magneton, and ultrasonically at room temperature until graphene oxide is completely dispersed in the ethylene glycol solution;

[0064] (2) Weigh 65 mg of anhydrous ferric chloride powder, add it to the solution of the above step (1), ultrasonicate at room temperature for 20 min to ensure that the ferric chloride is completely dispersed in the solution, then add 0.26 g of anhydrous sodium acetate, and at room temperature Stir for 0.5h.

[0065] (3) Pour the mixed solution of step (2) into the polytetrafluoroethylene liner of the high-temperature reaction kettle, carry out solvothermal reaction, the reaction temperature is 180 ° C, and the reaction time is 6h. After the reaction is completed, take out the reaction kettle and cool to room tempe...

Embodiment 3

[0068] A magnetic graphene carbon nanomaterial for adsorbing aflatoxin, the preparation method is as follows:

[0069] (1) take by weighing the graphene oxide of 40mg and add 6mL ethylene glycol solution in a beaker that is placed with a magneton, and ultrasonically at room temperature until graphene oxide is completely dispersed in the ethylene glycol solution;

[0070] (2) Weigh 65 mg of anhydrous ferric chloride powder, add it to the solution of the above step (1), ultrasonicate at room temperature for 20 min to ensure that the ferric chloride is completely dispersed in the solution, then add 0.26 g of anhydrous sodium acetate, and at room temperature Stir for 0.5h.

[0071] (3) Pour the mixed solution of step (2) into the polytetrafluoroethylene liner of the high-temperature reaction kettle, and carry out solvothermal reaction, the reaction temperature is 180 ° C, and the reaction time is 8 h. After the reaction is completed, the reaction kettle is taken out and cooled to ...

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Abstract

The invention discloses application of a magnetic graphene carbon nanomaterial in aflatoxin adsorption, and belongs to the technical field of aflatoxin adsorption materials. Graphene oxide, ethylene glycol, anhydrous ferric chloride and anhydrous sodium acetate are used as raw materials, under the solvothermal reaction condition, the magnetic graphene carbon nanomaterial is prepared, the magnetic graphene carbon nanomaterial is of a transparent single-lamellar or few-lamellar structure under a transmission electron microscope and a scanning electron microscope, a large number of Fe3O4 particles are evenly loaded on the surface of graphene and do not agglomerate, and the magnetic graphene carbon nanomaterial can be used for preparing the magnetic graphene carbon nanomaterial. The magnet has uniform particle size and is a potential aflatoxin adsorbent. When the magnetic graphene carbon nanomaterial is used as an adsorbent for aflatoxin adsorption, the magnetic graphene carbon nanomaterial has the characteristics of low adsorbent usage amount and high adsorption capacity.

Description

technical field [0001] The invention belongs to the technical field of aflatoxin adsorption materials, in particular to the application of magnetic graphene carbon nanomaterials in aflatoxin adsorption. Background technique [0002] The adsorbent is the key to the adsorption process and has a great influence on the removal efficiency of toxins. At present, the widely studied adsorbents mainly include activated carbon, silicate, kaolinite, bentonite and montmorillonite. Activated charcoal has been recognized for removing AFB from vegetable oils 1 effective adsorbent, but research shows that the loss of vegetable oil per kilogram of activated carbon will reach 4.4 kilograms. Small particle sorbents are valuable because of their large surface area and low nutrient loss. Graphene nanomaterials have attracted attention due to their small size, large specific surface area, nontoxicity, and biocompatibility. Due to its excellent adsorption properties, graphene can be used as an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30B01D15/08
CPCB01J20/205B01J20/06B01J20/28009B01D15/08
Inventor 张建成张初署唐月异王冕朱立飞于强杨珍于小华刘霄悦
Owner SHANDONG PEANUT RES INST
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