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Method for preparing cyclodextrin/reduced graphene oxide modified ferroferric oxide compound and application

A technology of triiron tetroxide and graphene, which is applied in chemical instruments and methods, special compound water treatment, physical/chemical process catalysts, etc., can solve problems such as the reduction of active sites, achieve a wide pH range, and speed up mass transfer. , the effect of preventing agglomeration

Inactive Publication Date: 2018-12-25
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But it is easy to agglomerate itself, resulting in the reduction of active sites

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Disperse 20 mg of graphene oxide in 20 ml of ethylene glycol, sonicate with an ultrasonic cell disruptor for 30 min, and set aside.

[0022] (2) Add 0.4 g FeCl 3 ·6H 2 O, 1.13 g sodium acetate, 0.3 g polyethylene glycol and 20 mg β-CD were added to the dispersion in step (1), and the mixture was magnetically stirred for 30 min, and set aside.

[0023] (3) Transfer the dispersion in step (2) to a 50 mL polytetrafluoroethylene reactor, and react at 200 °C for 8 h.

[0024] (4) Step (3) After the reaction solution was cooled to room temperature, the resulting precipitate was washed with deionized water and ethanol three times repeatedly, and then the sample was vacuum-dried at 50 °C for 12 h.

[0025] (5) The sample obtained in the step (4) of magnetic recovery is ground for later use.

[0026] The prepared β-CD / rGO modified Fe 3 o 4 The complex was placed under a transmission electron microscope (TEM) to observe the morphology of the material, and it was found th...

Embodiment 2

[0028] (1) Disperse 20 mg of graphene oxide in 20 ml of ethylene glycol, sonicate with an ultrasonic cell disruptor for 30 min, and set aside.

[0029] (2) Add 0.4 g FeCl 3 ·6H 2 O, 1.13 g sodium acetate, 0.3 g polyethylene glycol and 20 mg β-CD were added to the dispersion in step (1), and the mixture was magnetically stirred for 30 min, and set aside.

[0030] (3) Transfer the dispersion in step (2) to a 50 mL polytetrafluoroethylene reactor, and react at 200 °C for 8 h.

[0031] (4) Step (3) After the reaction solution was cooled to room temperature, the resulting precipitate was washed with deionized water and ethanol three times repeatedly, and then the sample was vacuum-dried at 50 °C for 12 h.

[0032] (5) The sample obtained in the step (4) of magnetic recovery is ground for later use.

[0033] The prepared catalyst was used to degrade bisphenol A (BPA) to verify its catalytic performance. 20mgL -1 A solution of BPA (20 mL) was placed in a 50 mL Erlenmeyer flask, ...

Embodiment 3

[0035] (1) Disperse 20 mg of graphene oxide in 20 ml of ethylene glycol, sonicate with an ultrasonic cell disruptor for 30 min, and set aside.

[0036] (2) Add 0.4 g FeCl 3 ·6H 2 O, 1.13 g sodium acetate, 0.3 g polyethylene glycol and 20 mg β-CD were added to the dispersion in step (1), and the mixture was magnetically stirred for 30 min, and set aside.

[0037](3) Transfer the dispersion in step (2) to a 50 mL polytetrafluoroethylene reactor, and react at 200 °C for 8 h.

[0038] (4) Step (3) After the reaction solution was cooled to room temperature, the resulting precipitate was washed with deionized water and ethanol three times repeatedly, and then the sample was vacuum-dried at 50 °C for 12 h.

[0039] (5) The sample obtained in the step (4) of magnetic recovery is ground for later use.

[0040] Catalysts were selected Fe 3 o 4 , β-CD / Fe 3 o 4 , rGO and the final composite catalyst, the BPA in Example 2 was catalytically degraded under the same conditions, and it ...

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Abstract

The invention discloses a method for preparing a cyclodextrin / reduced graphene oxide modified ferroferric oxide compound and application of the compound in water treatment. The method includes following steps: dispersing 20mg of graphene oxide into 20ml of ethylene glycol, using an ultrasonic cell breaker to treat for 30min to form uniform dispersion liquid, adding 0.4g of FeCl3 6H2O, 1.13g of sodium acetate, 0.3g of polyethylene glycol and 20mg of beta-CD into the dispersion liquid, and magnetically stirring for 30min; transferring mixed dispersion liquid into a reaction kettle for reaction at 200 DEG C for 8h; using deionized water and alcohol to repeatedly wash obtained precipitate, and vacuum-drying at 50 DEG C for 12h; grinding a final product for standby use. A catalyst prepared by the method has excellent catalytic performance, can remove pollutants within short time, is suitable for wide pH range and reusable and is expected to be used for degrading difficult-to-remove pollutants.

Description

technical field [0001] The invention relates to a method for preparing a cyclodextrin / reduced graphene oxide modified ferric oxide compound and its application in water treatment, belonging to the field of water treatment in environmental protection. Background technique [0002] With the acceleration of industrialization and the continuous improvement of people's requirements for the quality of their living environment, water pollution has become a hot issue. The water pollution problem in the new era has the characteristics of complex components, wide range of influence, serious harm, and difficult governance, which poses higher challenges to the treatment methods. To meet this challenge, it is necessary to develop removal technologies that are fast, efficient, low-cost, and easy to operate and maintain. [0003] Advanced oxidation technology (AOPs) has high catalytic activity, can directly mineralize or improve the biodegradability of pollutants through oxidation, and is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/28C02F1/72C02F101/34
CPCB01J31/28C02F1/722C02F1/725C02F2101/345C02F2305/023C02F2305/026
Inventor 张一梅陈庄赵亚龙武盼盼赖毓娴
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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