Preparation method of N-containing graphdiyne material

A technology of graphyne and alkyne compound, which is applied in the field of preparation of N-containing graphyne materials, and can solve problems such as high equipment and condition requirements, unfavorable promotion and application of N-containing graphyne materials, and disordered distribution of nitrogen elements in graphyne , to achieve the effect of low equipment requirements, broad industrial application prospects, and simple operation

Pending Publication Date: 2020-09-22
SHANGHAI UNIV OF ENG SCI
View PDF1 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few reports on the preparation of N-containing graphyne materials, and the preparation of N-containing graphyne materials is either disordered in the distribution of nitrogen elements in the p

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 N-containing graphdiyne material
  • Preparation method of N-containing graphdiyne material
  • Preparation method of N-containing graphdiyne material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Adding pyrazine and calcium carbide with a molar ratio of 1:5 into the reaction vessel, then adding absolute ethanol (the addition of ethanol should not exceed the sample), and then under the condition of argon protection, normal temperature and ultrasonic frequency of 53KHz Ultrasonic reaction for 12 hours, the reaction was terminated, separated, the collected solid was first washed with dilute nitric acid with a concentration of 1mol / L to remove unreacted calcium carbide, the obtained solid was dried at 60°C, ground, and the obtained solid was washed with ethanol to obtain The unreacted pyrazine was removed, and the obtained solid was dried again at 60° C. and ground to obtain powdery N-containing graphyne.

[0030] figure 1 The structural diagram of the N-containing graphyne obtained in this embodiment, as can be seen from the figure, the nitrogen elements are arranged in an orderly manner in the two-dimensional structure;

[0031] figure 2 The X-ray diffraction e...

Embodiment 2

[0034] Adding pyrazine and calcium carbide with a molar ratio of 1:10 into the reaction vessel, then adding absolute ethanol (the amount of ethanol added should not exceed the sample), and then under the condition of argon protection, normal temperature and ultrasonic frequency of 53KHz Ultrasonic reaction for 12 hours, the reaction was terminated, separated, the collected solid was first washed with dilute nitric acid with a concentration of 1mol / L to remove unreacted calcium carbide, the obtained solid was dried at 70°C, ground, and the obtained solid was washed with ethanol to obtain Unreacted pyrazine was removed, and the obtained solid was dried again at 70° C. and ground to obtain powdery N-containing graphyne.

[0035] The N-containing graphdiyne prepared by the present embodiment is tested for hydrogen evolution performance:

[0036] Add 20 mg of the N-containing graphyne obtained in this example into a hydrothermal reaction kettle, then add 5 sheets of nickel foam tha...

Embodiment 3

[0039] In the reaction vessel, add pyrazine and calcium carbide with a molar ratio of 1:15, then add absolute ethanol (the amount of ethanol should not exceed the sample), and then under the condition of argon protection, normal temperature and ultrasonic frequency of 53KHz Ultrasonic reaction for 12 hours, the reaction was terminated, separated, the collected solid was first washed with dilute nitric acid with a concentration of 1mol / L to remove unreacted calcium carbide, the obtained solid was dried at 80°C, ground, and the obtained solid was washed with ethanol to obtain The unreacted pyrazine was removed, and the obtained solid was dried again at 80° C. and ground to obtain powdery N-containing graphyne.

[0040] The N-containing graphdiyne prepared by the present embodiment is tested for energy storage performance:

[0041] The N-containing graphyne, conductive agent (acetylene black) and binder (polytetrafluoroethylene dispersion) prepared in this example were added to d...

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 an N-containing graphdiyne material, wherein the preparation method comprises the steps: by using an N-containing six-membered heterocyclic compound anda metal alkyne compound as raw materials and ethanol as a solvent, carrying out ultrasonic reaction under the condition of ultrasonic frequency of 50-55 kHz, separating after the reaction is finished, washing a collected solid, and drying to obtain the N-containing graphdiyne material. The N-containing graphdiyne material is prepared by adopting an ultrasonic method, taking the N-containing six-membered heterocyclic compound and a metal alkyne compound as raw materials and taking ethanol as a solvent, nitrogen elements in the prepared N-containing graphdiyne material are distributed orderly,and the whole preparation method is simple to operate, mild in condition, green, environment-friendly and relatively low in equipment requirement; besides, experiments show that the N-containing graphdiyne material prepared by the method has excellent hydrogen evolution performance and energy storage performance, effectively promotes the application of the graphdiyne material in the fields of hydrogen evolution materials, supercapacitors, lithium ion battery negative electrode materials and the like, and has a wide industrial application prospect.

Description

technical field [0001] The invention relates to a preparation method of an N-containing graphyne material, belonging to the technical field of carbon materials. Background technique [0002] Graphyne is a new type of carbon material after fullerene, carbon nanotube and graphene. Graphdiyne is a stable two-dimensional layered carbon material composed of sp hybridized carbon atoms and sp 2 The conjugated structure of hybrid carbon atoms has a unique delocalized large π bond structure, exhibiting unique photoelectrochemical and energy storage properties, and has broad application prospects in the fields of energy, catalysis, and electronics. [0003] The study found that nitrogen doping can effectively improve the electrochemical performance and redox activity of graphyne. At present, there are few reports on the preparation of N-containing graphyne materials, and the preparation of N-containing graphyne materials is either disordered in the distribution of nitrogen elements ...

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): C01B32/05
CPCC01B32/05
Inventor 孙明轩丁文张子涵高博文
Owner SHANGHAI UNIV OF ENG SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap