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

A kind of preparation method of modified graphene

A graphene and modification technology, applied in the field of graphene preparation, can solve the problems of complex process, environmental pollution and high preparation cost, and achieve the effect of simplifying the preparation process and improving the degree of functional modification

Active Publication Date: 2017-05-03
HARBIN INST OF TECH
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention is to solve the technology of high preparation cost, complicated process, single and low functionalization degree and serious environmental pollution when preparing graphene by the existing redox method problem, and provide a kind of preparation method of modified graphene

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
  • A kind of preparation method of modified graphene

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0013] Specific embodiment one: present embodiment is a kind of preparation method of modified graphene, is specifically carried out according to the following steps:

[0014] 1. Oxidation treatment of graphite: Add 0.3L~3L concentrated sulfuric acid with a mass fraction of 98% in a dry reactor, add 10g~100g of graphite powder, 0.1L~1L with a mass fraction of 65% Concentrated nitric acid, ultrasonic for 10min~60min, keep warm for 10min~100min at a temperature of 20℃~60℃, filter, and wash the obtained solid with distilled water repeatedly for 3 to 5 times. Drying at high temperature for 12h~36h to obtain graphite oxide;

[0015] 2. Preparation of benzophenone hydrazone derivatives: Add 2g to 20g of benzophenone derivatives into a round-bottomed flask, add 50mL to 1000mL of absolute ethanol and 1g to 50g of hydrazine hydrate with a mass fraction of 85% in sequence The solution is refluxed for 24h-72h at a temperature of 80°C and stirred, and then distilled under reduced pressur...

specific Embodiment approach 2

[0018] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the benzophenone derivative described in step two is benzophenone, 4-phenylbenzophenone or 3,4-dimethyl base benzophenones. Others are the same as the first embodiment.

specific Embodiment approach 3

[0019] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that the benzophenone derivatives described in step two are 4,4'-dimethoxybenzophenone, 4,4' - Bis(dimethylamino)benzophenone or 4,4'-bis(dimethylamino)thiobenzophenone. Others are the same as those in Embodiment 1 or 2.

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

No PUM Login to View More

Abstract

The invention discloses a preparation method of modified graphene, relates to a preparation method of graphene and aims to solve the technical problems of high preparation cost, complicated process, single and low functionalization degree and serious environment pollution when graphene is prepared with an existing oxidation-reduction method. The preparation method comprises 1), oxidation treatment of graphite; 2), preparation of a benzophenone hydrazine derivative; 3), preparation of a diaryl diazomethane derivative; 4), preparation of modified graphene. According to the preparation method, a functional group is introduced to a reaction of high-activity carbine and graphite oxide, the functional modification degree is improved, the preparation process is simplified, and the preparation method is suitable for large-scale industrial production and follow-up application.

Description

technical field [0001] The invention relates to a preparation method of graphene. Background technique [0002] Graphene is a single-layer two-dimensional honeycomb lattice structure material composed of carbon atoms. It has many excellent properties, such as high Young's modulus and carrier mobility, huge specific surface area, and excellent thermal conductivity. and transparency etc. Graphene materials have shown broad application prospects in the fields of catalyst supports, flexible optoelectronic devices, biomaterials, and sensing materials. At present, the preparation methods of graphene mainly include micromechanical separation method, epitaxial growth method, chemical vapor deposition, graphite oxide reduction method and so on. Among them, the graphite oxide reduction method is by far the most widely used method for preparing graphene. As a low-cost chemical method that can realize mass production of graphene, the graphite oxide reduction method has been highly va...

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): C01B32/184
Inventor 胡桢黄玉东黄云峰宋忱昊
Owner HARBIN INST OF 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