Check patentability & draft patents in minutes with Patsnap Eureka AI!

Aminated graphene and preparation method thereof

A technology of amination of graphene and graphene, applied in the directions of graphene, single-layer graphene, chemical instruments and methods, etc., can solve the problems of large damage to graphene sheets, achieve less defects, improve the degree of amination, and improve the reaction mild effects

Active Publication Date: 2022-06-07
TIANJIN POLYTECHNIC UNIV
View PDF9 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above method still needs to first oxidize graphene, and then carry out a ring-opening reaction with maleic anhydride through the functional group formed by graphene oxide to obtain maleic anhydride-modified graphene oxide, which will greatly damage the graphene sheet

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
  • Aminated graphene and preparation method thereof
  • Aminated graphene and preparation method thereof
  • Aminated graphene and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0031] The aminated graphene of the present invention is graphene with amino groups on the surface. The preparation method of the aminated graphene comprises the following steps: performing a Diels-Alder reaction on the graphene and an olefin compound to obtain an intermediate product, reacting the amino compound with the intermediate product to obtain an aminated graphene, see Figure 4 .

[0032] In the present invention, graphene may be unoxidized graphene. This can reduce the damage to the graphene sheet during the oxidation process. Graphene contains conjugated double bonds, which can undergo Diels-Alder reactions with olefinic compounds. The Diels-Alder reaction (D-A reaction) is a type of diene addition reaction, which is a reaction in which a conjugated diene reacts with an alkene or an alkyne to form a ring. The Diels-Alder reaction occurs between a dienite and a dienophile, and graphene usually plays the role of the dienite. Olefin compounds (such as maleic anhyd...

Embodiment approach

[0040] According to an embodiment of the present invention, the following specific steps are included:

[0041] Under the protection of inert gas, the graphene and the olefin compound are subjected to a Diels-Alder reaction at 100-150 ° C for 10-36 hours to obtain a reaction slurry, the reaction slurry is dissolved in an organic solvent, and the olefin compound that does not participate in the reaction is removed by washing, The intermediate product is obtained; the amino compound and the intermediate product are reacted at 80-200° C. to obtain the aminated graphene.

[0042] In the present invention, a Diels-Alder reaction is performed between graphene and an olefin compound under the protection of an inert gas to obtain a reaction slurry. The inert gas can be nitrogen, argon or the like. The reaction temperature of the Diels-Alder reaction can be 100-150°C, preferably 105-130°C, more preferably 110-120°C; the reaction time can be 10-36h; preferably 15-30h; more preferably 2...

Embodiment 1

[0057] Tween 80 was dissolved in deionized water to obtain an aqueous intercalant solution with a concentration of 10 mg / ml. The expanded graphite with a particle size of 2000 meshes is uniformly dispersed in the above-mentioned intercalating agent aqueous solution, and stirred at a stirring speed of 1000 rpm for 1 hour to obtain a graphite powder suspension with a concentration of 10 wt%. The graphite powder suspension was circulated 30 times through a high-pressure homogenizer (M-110L microfluidic homogenizer, Microfluidics, USA, Y-shaped cavity) under a pressure of 100 MPa to obtain a homogeneous solution. The homogeneous solution was centrifuged at 10,000 rpm for 30 min, and the 80 vol% solution of the upper layer was taken, filtered, washed with deionized water three times, and dried in vacuum to obtain powdered graphene.

[0058] The powdered graphene and maleic anhydride were added to the reaction kettle in a mass ratio of 1:20, and the Diels-Alder reaction was carried ...

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
concentrationaaaaaaaaaa
concentrationaaaaaaaaaa
Login to View More

Abstract

The invention discloses an aminated graphene and a preparation method thereof. The preparation method comprises the following steps: performing Diels-Alder reaction on graphene and olefin compound to obtain an intermediate product, and reacting an amino compound with the intermediate product to obtain aminated graphene. The method of the invention has less damage to the graphene sheet structure.

Description

technical field [0001] The invention relates to an aminated graphene and a preparation method thereof. Background technique [0002] Graphene is made of sp 2 Hybridized carbon atoms form a hexagonal planar film with a honeycomb lattice structure, which has excellent electrical properties, mechanical properties and thermal conductivity. Graphene has potential applications in supercapacitors, biosensors, transparent electrodes, catalysis, water treatment, polymer reinforcement, etc. The macro-controllable preparation of graphene has become a prerequisite for its further industrial application. [0003] CN106976870A discloses a method for efficiently exfoliating graphite with a homogenizer to prepare graphene sheets. The graphene surface obtained by the above method does not contain any functional groups, and the van der Waals force between the sheets makes the graphene sheets stack. Therefore, the compatibility between pure graphene and polymer matrix is ​​extremely poor, ...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/194C01B32/19
CPCC01B32/194C01B32/19C01B2204/02C01B2204/04C01B2204/20
Inventor 张兴祥王玉周曹瑞瑞刘海辉
Owner TIANJIN POLYTECHNIC UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com