Preparation method of cobalt oxide/graphene composite nano material

A compound technology of cobalt tetraoxide and graphene, which is applied in the field of materials, can solve the problems of difficult solid-liquid separation, many synthesis steps, and long time, and achieve the effect of simple synthesis equipment, simple process flow, and easy preparation

Inactive Publication Date: 2013-06-12
NANCHANG UNIV
View PDF2 Cites 24 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In summary, using graphene oxide as raw material, graphene-based inorganic nanocomposites were synthesized by solution in-situ synthesis technology, whether it is water/solvothermal method, liquid phase controlled precipitation method, whether it is water/solvent heat

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 cobalt oxide/graphene composite nano material
  • Preparation method of cobalt oxide/graphene composite nano material
  • Preparation method of cobalt oxide/graphene composite nano material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Weigh 30 mg of glycine, add 8 ml of cobalt nitrate solution with a concentration of 0.06 mol / L, mix evenly by ultrasonic, add 100 ml of 0.5 mg / ml graphene oxide suspension dropwise, mix evenly by ultrasonic, put the mixture into In the ultrasonic atomization device with circulating cooling, set the nitrogen flow rate to 0.8 L / min, and turn on the atomization device with a piezoelectric ceramic plate frequency of 2.4 MHz. The solid product generated by the combustion reaction was collected by depositing a single crystal silicon wafer placed at the outlet end of the tube furnace.

Embodiment 2

[0035] Weigh 60 mg of glycine, add 15 ml of cobalt nitrate solution with a concentration of 0.06 mol / L, mix evenly by ultrasonic, add 100 ml of 0.5 mg / ml graphene oxide suspension dropwise, mix evenly by ultrasonic, put the mixture into In the ultrasonic atomization device with circulating cooling, set the nitrogen flow rate to 0.8 L / min, and turn on the atomization device with a piezoelectric ceramic plate frequency of 2.4 MHz. The solid product generated by the combustion reaction was collected by depositing a single crystal silicon wafer placed at the outlet end of the tube furnace.

Embodiment 3

[0037] Weigh 115 mg of ethylene glycol, add 25 ml of cobalt nitrate solution with a concentration of 0.06 mol / L, mix evenly by ultrasonic, add 100 ml of 0.5 mg / ml graphene oxide suspension dropwise, mix evenly by ultrasonic, and put the mixed solution into Into the ultrasonic atomization device with circulating cooling, set the nitrogen flow rate to 0.8 L / min, turn on the atomization device with a piezoelectric ceramic sheet frequency of 2.4 MHz, and the generated droplets are loaded into the furnace tube at 800 °C by nitrogen gas, causing The solid product generated by the combustion reaction of the solution is deposited on a single crystal silicon wafer placed at the outlet end of the tube furnace to collect samples.

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 preparation method of a cobalt oxide/graphene composite nano material, which is characterized by comprising the following steps: (1) preparing a 0.01-1.00 mol/L cobalt nitrate-organic fuel mixed solution, wherein the mol ratio of organic fuel to metal ions is 0.9-2; (2) preparing a 0.1-1.0 mg/ml graphene oxide dispersion solution; (3) calculating the volumes of the mixed solution obtained in the step (1) and the graphene oxide dispersion solution obtained in the step (2) according to the mass ratio of cobalt oxide to graphene in the designed product and the required preparation amounts, and mixing the mixed solution and the graphene oxide dispersion solution by ultrasonic to obtain a dispersion solution for atomization; (4) filling the dispersion solution obtained in the step (3) into an ultrasonic atomization device, carrying the generated atomized liquid drops into a 500-1100 DEG C pipe furnace by argon or nitrogen gas at the flow rate of 0.3-1.2 L/minute, and initiating solution combustion reaction; and (5) collecting the solid reaction product. The invention has the advantages of shorter technical procedure, simple synthesis equipment and continuous preparation process, can directly obtain the final powder product by one step, and can easily implement industrialized preparation.

Description

technical field [0001] The invention belongs to the technical field of materials and relates to a preparation method of composite nanomaterials. Background technique [0002] Cobalt tetroxide (Co 3 o 4 ) is an important transition metal oxide with a normal spinel structure, which has unique optical, electrical, magnetic, electrochemical, catalytic and other properties. It is widely used in many new fields such as pressure sensitive gas sensor, catalyst, super capacitor, flat panel display, magnetic material and lithium ion battery cathode material. co 3 o 4 The application effects in these aspects are not only affected by the chemical properties of the material itself, but also its microstructure (such as grain size, particle size distribution range and crystal morphology) is a key parameter that affects and determines its performance. Therefore, in recent years, high-quality nano-Co 3 o 4 The controlled synthesis technology of powder has been extensively studied bec...

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): C01G51/04C01B31/04B82Y30/00C01B32/184
Inventor 陈伟凡刘越林玉翠刘铭吴骏飞
Owner NANCHANG UNIV
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