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

Method for preparing nitrogen-doped fluorinated graphene by using graphite fluoride

A technology of fluorinated graphene and fluorinated graphite, which is applied in the direction of graphene and nano-carbon, can solve the problems of weakening the performance of composite materials and low compatibility, and achieves easy operation and control, good compatibility and simple process route Effect

Pending Publication Date: 2019-01-18
SHANGHAI APPLIED TECHNOLOGIES COLLEGE
View PDF4 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, fluorinated graphene is a new type of derivative of graphene, which not only maintains the high-strength properties of graphene, but also has high temperature resistance, corrosion resistance, friction resistance, stable chemical properties and excellent lubrication. However, due to the existence of fluorine atoms, its surface amphiphobic characteristics are particularly obvious, which makes it have low compatibility with solvents and material interfaces during the process of compounding with other materials, which weakens the performance of the composite material

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
  • Method for preparing nitrogen-doped fluorinated graphene by using graphite fluoride
  • Method for preparing nitrogen-doped fluorinated graphene by using graphite fluoride
  • Method for preparing nitrogen-doped fluorinated graphene by using graphite fluoride

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) Weigh the fluorinated graphite and ammonium carbonate at a mass ratio of 1:1, add them to the agate pot (capacity is 100ml), wherein the quality of the fluorinated graphite is 4 grams; add agate beads to the agate pot;

[0019] (2) Fix the agate pot in the ball mill, and grind it for 15 hours during the ball milling process, the ball milling frequency is 540 rpm;

[0020] (3) Add deionized water to the mixture obtained in step 2 to repeatedly wash it, and then carry out suction filtration, vacuum drying and grinding to obtain fluorinated graphene solid powder.

[0021] Through scanning electron microscope observation, it is found that the obtained product is a flake structure, indicating that fluorinated graphite has been successfully exfoliated into fluorinated graphene (as attached figure 1 ). attached figure 2 It is the XPS spectrum of the resulting product. It can be seen from the figure that the original fluorinated graphite (FG) has obvious carbon peaks and...

Embodiment 2

[0023] (1) fluorinated graphite and ammonium carbonate are weighed and mixed respectively, wherein the quality of graphite fluoride is 4 grams, the quality of ammonium carbonate is 8 grams, and the mass ratio is 1:2; add agate beads to the agate pot;

[0024] (2) Fix the agate pot in the ball mill, grind for 20 hours during the ball milling process, the ball milling frequency is 540 rpm;

[0025] (3) Add deionized water to the mixture obtained in step 2 to repeatedly wash it, and then carry out suction filtration, vacuum drying and grinding to obtain fluorinated graphene solid powder.

Embodiment 3

[0027] (1) Mix graphite fluoride with ammonium fluoride, wherein the quality of graphite fluoride is 4 grams, ammonium fluoride is 4 grams, and the mass ratio is 1:1; add agate beads to the agate pot;

[0028] (2) Fix the agate pot in the ball mill, grind for 25 hours during the ball milling process, the ball milling frequency is 600 rpm;

[0029] (3) Add deionized water to the mixture obtained in step 2 to repeatedly wash it, and then carry out suction filtration, vacuum drying and grinding to obtain fluorinated graphene solid powder.

[0030] The morphology of the obtained nitrogen-doped fluorinated graphene is better, and the image 3 The obvious lamellar structure can be clearly seen. attached Figure 4 It is the XPS spectrum of the resulting product. It can be seen from the figure that the original fluorinated graphite (FG) has obvious carbon and fluorine peaks at 294.6eV and 687eV, while nitrogen-doped fluorinated graphene (NG) has more peaks at 400eV. A nitrogen peak...

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 relates to a method for preparing nitrogen-doped fluorinated graphene by using graphite fluoride, comprising the following steps: raw materials are weighed in proportion and are added into an agate pot, agate beads are added to help grinding, and uniform stirring is performed; the mixture is placed in a ball mill to be subjected to ball milling for 15 to 30 hours, wherein the ball milling frequency is 540 to 600 rpm; after ball milling is ended, the nitrogen-doped fluorinated graphene containing a small amount of impurities is ultrasonically dispersed in deionized water to obtaina water system mixed suspension; the water system mixed suspension obtained after ultrasonication is placed in a centrifuge tube for centrifugation, a fluorinated graphene stabilized suspension in which the upper layer is doped with nitrogen element is collected, and precipitate is discarded; and the water in the fluorinated graphene stabilized suspension in which nitrogen element is doped is removed by suction filtration, and vacuum drying is performed to obtain the nitrogen-doped fluorinated graphene. The preparation process of is relatively simple, and easy to operate and control, which can realize large-scale production; the prepared nitrogen-doped fluorinated graphene has good quality and improved hydrophilicity.

Description

[technical field] [0001] The invention belongs to the field of new materials, in particular to a method for preparing nitrogen-doped fluorinated graphene by using fluorinated graphite. [Background technique] [0002] With the emergence of graphene, two-dimensional materials (graphene, fluorinated graphene, graphene oxide, etc.) have become a research hotspot in recent years. Among them, fluorinated graphene is a new type of derivative of graphene, which not only maintains the high-strength performance of graphene, but also has high temperature resistance, corrosion resistance, friction resistance, stable chemical properties and excellent lubrication. However, due to the presence of fluorine atoms, its surface amphiphobic characteristics are particularly obvious, which makes it have low compatibility with solvents and material interfaces in the process of compounding with other materials, which weakens the performance of the composite material. Therefore, if the fluorinated ...

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): C01B32/184
CPCC01B32/184
Inventor 万传云马敏刘喜亚叶俊勇
Owner SHANGHAI APPLIED TECHNOLOGIES COLLEGE
Features
  • Generate Ideas
  • 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