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A kind of nitrogen-doped graphene/copper ferrite nanocomposite material and preparation thereof

A technology of nitrogen-doped graphene and nanocomposite materials, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., to achieve low production cost, simple synthesis process, and improved electrochemical performance

Active Publication Date: 2017-02-08
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to improve its performance, nitrogen-doped graphene is combined with copper ferrite. At present, nitrogen-doped graphene / copper ferrite has not been reported.

Method used

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  • A kind of nitrogen-doped graphene/copper ferrite nanocomposite material and preparation thereof
  • A kind of nitrogen-doped graphene/copper ferrite nanocomposite material and preparation thereof
  • A kind of nitrogen-doped graphene/copper ferrite nanocomposite material and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Implementation Example 1: The preparation method of a nitrogen-doped graphene / copper ferrite nanocomposite material (the mass ratio of graphite oxide to copper ferrite is 1:5) with a nitrogen doping amount of 1%, specifically includes the following steps:

[0024] The first step is to ultrasonicate 100 mg of graphite oxide in 100 mL of mixed solvent (1:1) for 3 hours to obtain a uniformly dispersed graphene oxide solution;

[0025] In the second step, 1.6888g of ferric nitrate and 0.5050g of copper nitrate are added to the above mixed solution, stirred and dispersed for 5min;

[0026] In the third step, 10 g of urea is added to the obtained uniformly dispersed mixed solution, and stirred and dispersed for 30 minutes to make it evenly mixed;

[0027] The fourth step is to transfer the uniformly mixed mixed solution to a hydrothermal kettle for solvothermal reaction, the reaction temperature is 120°C, and the reaction time is 20h;

[0028] Step 5: Centrifuge the product,...

Embodiment 2

[0030] Implementation Example 2: A method for preparing a nitrogen-doped graphene / copper ferrite nanocomposite material (the mass ratio of graphite oxide to copper ferrite is 1:8) with a nitrogen doping amount of 1.5%, specifically comprising the following steps:

[0031] The first step is to ultrasonicate 100 mg of graphite oxide in 100 mL of mixed solvent (1:2) for 3 hours to obtain a uniformly dispersed graphene oxide solution;

[0032] In the second step, 2.7021g of ferric nitrate and 0.8079g of copper nitrate were added to the above mixture, and stirred and dispersed for 20 minutes;

[0033] In the third step, 15g of urea is added to the obtained uniformly dispersed mixed solution, and stirred and dispersed for 40min again to make it evenly mixed;

[0034] The fourth step is to transfer the uniformly mixed mixed solution to a hydrothermal kettle for solvothermal reaction, the reaction temperature is 180°C, and the reaction time is 18h;

[0035] Step 5: Centrifuge the pro...

Embodiment 3

[0037] Implementation Example 3: The preparation method of a nitrogen-doped graphene / copper ferrite nanocomposite material (the mass ratio of graphite oxide to copper ferrite is 1:10) with a nitrogen doping amount of 2%, specifically includes the following steps:

[0038] The first step is to ultrasonicate 100 mg of graphite oxide in 100 mL of mixed solvent (1:4) for 3 hours to obtain a uniformly dispersed graphene oxide solution;

[0039] In the second step, 3.3777g of ferric nitrate and 1.0099g of copper nitrate were added to the above mixture, and stirred and dispersed for 30 minutes;

[0040] In the third step, 20 g of urea is added to the obtained uniformly dispersed mixed solution, and stirred and dispersed for 60 minutes to make it evenly mixed;

[0041] The fourth step is to transfer the uniformly mixed mixed solution to a hydrothermal kettle for solvothermal reaction, the reaction temperature is 200°C, and the reaction time is 12h;

[0042] Step 5: Centrifuge the pro...

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Abstract

The invention discloses a nanocomposite material of nitrogen doped with graphene / copper ferrite and a preparation method thereof. The method comprises the steps that graphite oxides are put in a mixed solvent for conducting ultrasonic dispersion for a period of time, a mixed solution of dissolved ferric nitrate and copper nitrate is poured into an evenly-dispersed graphene oxide solution, then urea is added in the mixed solution, after the urea is stirred and dissolved, the obtained mixed solution is moved into a hydrothermal kettle for conducting a solvothermal reaction, and after the reaction is over and products are centrifugally washed and dried, the nanocomposite material of the nitrogen doped with the graphene / copper ferrite is obtained. According to the nanocomposite material of the nitrogen doped with the graphene / copper ferrite and the preparation method thereof, the nitrogen doped with the graphene is obtained while the graphite oxides are reduced, copper ferrite nano particles are grown on the surface of the nitrogen doped with the graphene, the nanocomposite material of the nitrogen doped with the graphene / copper ferrite is prepared, and the prepared nanocomposite material has a good application prospect on the aspect of energy storage elements and electrocatalysis.

Description

technical field [0001] The invention belongs to the field of nanocomposite material preparation, in particular to a nitrogen-doped graphene / copper ferrite nanocomposite material and its preparation. Background technique [0002] Since 2004, two scientists, Andre Geim and Konstantin Novoserov of the University of Manchester in the United Kingdom, discovered and prepared graphene, but the preparation method at that time was through a simple mechanical exfoliation method. The performance of graphene has attracted widespread attention, so a large amount of graphene is needed, and simple mechanical exfoliation can no longer meet the demand for graphene. At present, there are many ways to prepare graphene, but there are corresponding defects in the prepared graphene, which destroys its perfect six-membered ring structure, reduces its performance, and limits its wide application. In order to reduce defects, the preparation, doping or compounding of graphene has become a research h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/46B82Y30/00B82Y40/00
Inventor 郝青丽王文娟夏锡锋雷武汪信姚超
Owner NANJING UNIV OF SCI & TECH
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