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Preparation of copper oxide nitrogen-doped graphene airgel synthesized by a hydrothermal method

A technology of nitrogen-doped graphene and copper oxide, which is applied in the direction of graphene, carbon compounds, inorganic chemistry, etc., to achieve the effects of improving electrical conductivity, increasing load capacity, and improving stability

Active Publication Date: 2018-10-19
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] So far, there is no report on the preparation of copper oxide nanoparticles and nitrogen-doped graphene airgel composites, so the present invention synthesizes copper oxide nitrogen-doped graphene airgel by one-step method

Method used

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  • Preparation of copper oxide nitrogen-doped graphene airgel synthesized by a hydrothermal method
  • Preparation of copper oxide nitrogen-doped graphene airgel synthesized by a hydrothermal method
  • Preparation of copper oxide nitrogen-doped graphene airgel synthesized by a hydrothermal method

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Experimental program
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Effect test

Embodiment 1

[0021] Take 100 mg of graphene oxide and add it into 50 mL of ultrapure water, and ultrasonically disperse it. After the dispersion is even, take 50mg of sodium hydroxide, 78mg of sodium dihydrogen phosphate dihydrate, 60mg of copper sulfate pentahydrate, and 3g of urea into the above dispersion liquid and stir evenly, then pour the dispersion liquid into a 100mL autoclave, and the reaction The kettle was sealed and placed in a program-controlled box-type electric furnace at 180°C for 12 hours.

Embodiment 2

[0023] After the reaction is complete, take out the copper oxide nitrogen-doped graphene hydrogel and put it into a 100mL beaker, pour an appropriate amount of ultrapure water into the beaker, soak it at room temperature for 3 days, and replace the ultrapure water every 4h to wash away the impurities. , and freeze-dried for 24 hours to obtain the final product. Its scanning electron microscope picture is attached figure 1 As shown, it can be seen from the figure that the nitrogen-doped graphene airgel prepared by this method is not easy to agglomerate, and the copper oxide loading capacity is relatively large. attached figure 2 It is a high-magnification scanning electron microscope image of nitrogen-doped graphene airgel. It can be seen that the graphene has an obvious wrinkled structure, which can effectively prevent the irreversible accumulation of graphene into graphite. The infrared spectrum of the copper oxide nitrogen-doped graphene airgel is shown in the attached ...

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Abstract

The invention relates to a preparation method for compounding a copper oxide nitrogen-doped graphene aerogel based on a hydrothermal method. The preparation method comprises the following steps: preparing graphite oxide; preparing a copper oxide nitrogen-doped graphene hydrogel; preparing the copper oxide nitrogen-doped graphene aerogel. The preparation method has the beneficial effects that the nitrogen doping is capable of increasing the conductivity and stability of graphene, increasing the active sites of metallic particles attached to the graphene surface and increasing the load capacity of copper oxide and the prepared copper oxide nitrogen-doped graphene aerogel is difficult to agglomerate.

Description

technical field [0001] The invention relates to the preparation of a copper oxide nitrogen-doped graphene airgel synthesized by a hydrothermal method, and belongs to the field of material synthesis. technical background [0002] Copper oxide is a P-type semiconductor material with a narrow energy band gap (1.2ev). At the same time, due to the existence of many lattice defects in the copper oxide grains, it can form a highly active reaction center. It is used in biosensors, catalysis, and batteries. etc. have certain applications. [0003] Graphene is a two-dimensional carbon material with a unique electronic structure and excellent electrochemical properties, good chemical stability and low cost, which has attracted widespread attention, making it widely used in many fields such as biotechnology, catalysts, and energy storage. However, during the preparation process, the presence of π-π bonds and van der Waals forces in graphene will cause the irreversible aggregation of gr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/184
CPCC01B2204/20C01B2204/22C01P2002/82C01P2004/03
Inventor 孔泳杨静
Owner CHANGZHOU UNIV