Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of aminated graphene oxide

A technology of amination and graphene, applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc., can solve the problem of different sizes of material sheets, achieve good compatibility, simple preparation method, and improved impact strength Effect

Pending Publication Date: 2020-06-05
BEIJING UNIV OF CHEM TECH
View PDF7 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to solve the technical problem of different material sheet sizes produced by existing preparation methods, and provides a method for preparing aminated graphene oxide with a specific single layer and uniform distribution.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of aminated graphene oxide
  • Preparation method of aminated graphene oxide
  • Preparation method of aminated graphene oxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The selected graphite flakes in this embodiment are 300 meshes, and the selected small molecule amine is triethylenetetramine.

[0026] The present embodiment prepares a large sheet of aminated graphene oxide from the above raw materials, and its specific steps are as follows:

[0027] Weigh 5g of 300 mesh graphite flakes, and obtain a graphene oxide dispersion by improving the Hummers method and dialysis with deionized water. The improved Hummers method is as follows: add 2.5g sodium nitrate and 120ml concentrated sulfuric acid to 5g flake graphite, then add 15g potassium permanganate, after 2 days of reaction, take a mixed solvent of 30ml hydrogen peroxide and 300ml deionized water, slowly add the reacted system until no gas is released. Then, through deionized water dialysis and ultrasound, two kinds of graphene oxide dispersions were obtained.

[0028] The obtained graphene oxide dispersion was processed by a cell disruptor in an ice-water bath for 15 minutes, fol...

Embodiment 2

[0033] The selected graphite flakes in this embodiment are 300 meshes, and the selected small molecule amine is triethylenetetramine.

[0034] The present embodiment prepares a kind of larger lamellar aminated graphene oxide from the above raw materials, and its specific steps are as follows:

[0035]Weigh 5g of 300-mesh graphite flakes, and obtain a graphene oxide dispersion by improving the Hummers method and dialysis with deionized water. The graphene oxide dispersion is treated by a cell disruptor in an ice-water bath for 45 minutes, followed by ultrasonication for 2 hours. After freeze-drying, graphene oxide powder is obtained. First, 1g of graphene oxide powder and 200ml of DMSO were added to the beaker, followed by 5g of triethylenetetramine and 1g of diisopropylcarbodiimide. After condensing and refluxing at 120°C for 12 hours, adding ethanol to make it layered, centrifuging at a speed of 8000rpm / min for 5 minutes, and freeze-drying the supernatant to obtain a large l...

Embodiment 3

[0040] The selected graphite flakes in this embodiment are 3000 meshes, and the selected small molecule amine is triethylenetetramine (TETA).

[0041] The present embodiment prepares a kind of smaller lamellar aminated graphene oxide from above raw material, and its specific steps are as follows:

[0042] Weigh 5g of 3000-mesh graphite flakes, and obtain a graphene oxide dispersion by improving the Hummers method and dialysis with deionized water. The graphene oxide dispersion is treated by a cell disruptor in an ice-water bath for 20 minutes, followed by ultrasonication for 2 hours. After freeze-drying, graphene oxide powder is obtained. First 1g graphene oxide powder and 200ml THF are added in the beaker, followed by adding TETA5g and N-N'-dicyclohexylcarboimide 1g. After condensing and reflux for 24 hours at 120°C, add ethanol to make it layered, centrifuge at a speed of 8000rpm / min for 10min, and then freeze-dry the supernatant to obtain medium-layer triethylenetetramine-...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to a preparation method of aminated graphene oxide, which solves the technical problem of different sizes of material lamellas prepared by the existing preparation method, and comprises the following steps: weighing graphite flakes, and preparing graphene oxide dispersion liquid from the graphite flakes by an improved Hummers method; performing cell disruptor treatment and ultrasonic treatment on the obtained graphene oxide dispersion liquid, and performing freeze drying to obtain graphene oxide powder; adding the obtained graphene oxide powder into an organic solvent, carrying out ultrasonic treatment, and then adding a small molecular amine compound and a dehydration condensing agent for treatment; and carrying out centrifugation and suction filtration on the reaction product through a centrifuge to obtain aminated graphene oxide dispersion liquid with different lamellar sizes, and carrying out freeze drying to obtain aminated graphene oxide powder. The preparation method can be used for preparing aminated graphene oxide.

Description

technical field [0001] The invention relates to a preparation method of a graphite material, in particular to a preparation method of aminated graphene oxide. Background technique [0002] Graphene is a two-dimensional monolayer composed of carbon atoms arranged in a hexagonal structure with sp2 hybrid orbitals. This unique structural feature of graphene makes it have good permeability to visible light and has very high electrical and thermal conductivity. At the same time, its mechanical properties are also exceptionally good, and it is also the lightest and thinnest material known. However, in practical applications, graphene is expensive and difficult to produce on a large scale. However, in order to meet the needs of a wider range of applications, the functional modification of graphene is particularly important. In the process of preparing graphene, a derivative called graphene oxide is produced. Pristine graphene or graphene oxide is not suitable for the preparation ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C01B32/198
CPCC01B32/198
Inventor 隋刚吕晟东张文卿吴凌云
Owner BEIJING UNIV OF CHEM TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com