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

Preparation method for graphene/copper composite nanosheet

A technology of nanosheets and graphene, which is applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problem that the shape of copper-based nanosheets is difficult to control, the copper-based nanosheets are easy to oxidize, and the performance is not good. Stability and other issues, to achieve the effect of short preparation cycle, good dispersion and large size

Active Publication Date: 2019-05-21
HARBIN INST OF TECH AT WEIHAI
View PDF14 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The metal nanosheets need to be obtained at least 100 hours, and the preparation cycle is long; the Chinese patent with the announcement number 103540727 discloses a method of obtaining two-dimensional nanosheets by applying high-speed, large strain and high-strain gradient plastic deformation, The nano-sheet structure obtained by this method is a metal body material; the Chinese patent application publication number 106623980 discloses a method for preparing metal molybdenum nano-sheets by thermal decomposition, and the prepared molybdenum nano-sheets have a lateral size of 0.1-2 μm , the shape is difficult to control
[0004] In summary, the current preparation of copper-based nanosheets still has problems such as difficult control of morphology, irregularity, small size, difficulty in dispersion, and long preparation cycle.
Moreover, the copper-based nanosheets obtained by existing methods are easily oxidized and have unstable properties.

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 for graphene/copper composite nanosheet

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0022] The preparation method of graphene / copper composite nanosheet involved in the present invention comprises the following steps:

[0023] Step 1. Dissolving the copper-containing organic salt in an organic solvent whose boiling point is higher than the decomposition temperature of the organic salt is configured to form a decomposition solution.

[0024] Wherein the copper-containing organic salt is an organic salt containing monovalent or divalent copper, and the copper-containing organic salt is preferably copper oleate; the organic solvent having a boiling point higher than the decomposition temperature of the copper-containing organic salt is hydrocarbons, benzenes, One or more mixtures of ethers, long-chain alcohols, ketones, esters, and lipids, the organic solvent is preferably oleic acid; the copper concentration in the decomposition solution is preferably 0.001 mol / L-0.02mol / L.

[0025] Step 2, place the decomposition solution obtained in step 1 into a protective ...

Embodiment 1

[0031] At room temperature, dissolve copper oleate containing divalent copper in oleic acid to make a decomposition solution with a copper concentration of 0.001mol / L; place the decomposition solution in a tube furnace and heat it under nitrogen protection. The gas flow rate is 60mL min -1 , the heating rate is 5°C / min. During the heating process, the maximum temperature of the decomposition solution is 250°C, and it is kept at 250°C for 30 minutes. Finally, nanosheets whose morphology is mainly regular triangles can be obtained.

[0032] After X-ray diffraction analysis, the sample has a strong diffraction peak on the Cu(111) plane. Through high-resolution transmission electron microscopy, the thickness of the nanosheets is 80nm-120nm, the average lateral size is 3μm-5μm, and the maximum lateral size is 10μm-14μm. The surface of the nanosheets is covered with a layer of graphene with 5-8 layers of crystal planes. Formation of graphene / copper composite nanosheets. The obtain...

Embodiment 2

[0036] At room temperature, dissolve copper oleate containing divalent copper in oleic acid to make a decomposition solution with a copper concentration of 0.001mol / L; place the decomposition solution in a tube furnace and heat it under the protection of argon. Argon gas flow rate is 80mL min -1 , the heating rate is 5°C / min. During the heating process, the maximum temperature of the decomposition solution is 250°C, and it is kept at 250°C for 30 minutes. Finally, nanosheets whose morphology is mainly regular triangles can be obtained.

[0037] After X-ray diffraction analysis, the sample has a strong diffraction peak on the Cu(111) plane. Through high-resolution transmission electron microscopy, the thickness of the nanosheets is 80nm-120nm, the average lateral size is 3μm-5μm, and the maximum lateral size is 10μm-14μm. The surface of the nanosheets is covered with a layer of graphene with 5-8 layers of crystal planes. Formation of graphene / copper composite nanosheets. The ...

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
sizeaaaaaaaaaa
sizeaaaaaaaaaa
sizeaaaaaaaaaa
Login to View More

Abstract

The invention provides a preparation method for a graphene / copper composite nanosheet. The preparation method comprises the steps that step1, a copper-containing organic salt is dissolved in an organic solvent with the boiling point being higher than the decomposition temperature of the organic salt, and a decomposition solution is prepared; and step2, the decomposition solution obtained in the step1 is placed in a protective atmosphere to be heated and performs heat decomposition to generate copper and carbon, the generated carbon is adsorbed on the surface of the generated copper to form a graphene layer, the graphene layer makes copper growth be anisotropic, the growth direction of the copper is perpendicular to the crystal surface of the copper (111), the graphene / copper composite nanosheet is formed, and the side length size of the graphene / copper composite nanosheet can be controlled by changing the heat decomposition conditions. The preparation method for the graphene / copper composite nanosheet related by the invention has the advantages of being low in preparation temperature, easy to control, low in cost, easy to disperse, short in preparation period, environmentally friendly and non-toxic, low in energy consumption and simple in equipment.

Description

technical field [0001] The invention relates to the technical field of metal nanomaterial preparation, in particular to a method for preparing graphene / copper composite nanosheets. Background technique [0002] In the field of metal nanomaterials technology, two-dimensional nanomaterials have become a new type of nanomaterials due to their special shape and unique properties different from other materials, and have attracted more attention. Compared with noble metals such as gold, platinum, and silver, copper-based nanosheets have low cost and low contact resistance, and have gradually become a research hotspot for two-dimensional nanomaterials. Since copper-based nanosheets are easily oxidized during preparation and use, and the size and shape are not easy to control, the preparation of stable and controllable copper-based nanosheets has become one of the difficulties in this research field. [0003] The Chinese patent with the notification number CN103170647 discloses a m...

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 Applications(China)
IPC IPC(8): B22F9/30B22F1/00B82Y30/00B82Y40/00
Inventor 尹鹏飞李宇杰邹永兴张鹏
Owner HARBIN INST OF TECH AT WEIHAI
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