Reduced graphene oxide/carbon nanotube composite material and preparation method thereof
A technology of carbon nanotubes and composite materials, applied in the field of reduced graphene oxide/carbon nanotube composite materials and their preparation, can solve the problems of low dispersibility and activity, increase internal space and specific surface area, and improve dispersibility. Effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0031] The embodiment of the present invention also provides a method for preparing a reduced graphene oxide / carbon nanotube composite material, comprising the following steps: loading modified carbon nanotubes on the reduced graphene oxide sheet. Specifically, the loading includes electrostatic self-assembly of the modified carbon nanotube solution and the graphene oxide dispersion, followed by heat treatment.
[0032] Wherein, the preparation of the modified carbon nanotube solution includes modifying the carbon nanotube with a surfactant. The modification includes mixing the surfactant and the carbon nanotubes to form a first mixture, and adding the first mixture dropwise to the aqueous solution for multiple dispersions.
[0033] Further, before the first mixture is dispersed, the first mixture is ground, so that the surfactant and the carbon nanotubes are mixed more fully, and it is also more conducive to ensuring the dispersion and activity of the subsequent composite mat...
Embodiment 1
[0056] The present embodiment provides a reduced graphene oxide / carbon nanotube composite material, which includes reduced graphene oxide and modified carbon nanotubes, the reduced graphene oxide includes multilayer reduced graphene oxide sheets, and the modified carbon nanotubes support On the reduced graphene oxide sheet, the modified carbon nanotubes located between two adjacent reduced graphene oxide sheets are arranged in a manner perpendicular to the reduced graphene oxide sheet. The modified carbon nanotube accounts for 24% by weight of the reduced graphene oxide / carbon nanotube composite material.
[0057] The present embodiment also provides a method for preparing a reduced graphene oxide / carbon nanotube composite material, comprising the following steps:
[0058] 50 mg of carbon nanotubes were weighed and mixed with 200 mg of CTAB (cetyltrimethylammonium bromide) to form a first mixture, and then ground. Get 200ml of deionized water and place it in a 250ml beaker, a...
Embodiment 2
[0064] This embodiment provides a reduced graphene oxide / carbon nanotube composite material, the structure of which is the same as that of the reduced graphene oxide / carbon nanotube composite material in Example 1, the difference being that the modified carbon nanotube accounts for the reduced graphene oxide / carbon nanotube composite material. The mass percentage of the carbon nanotube composite material is 32.4%.
[0065] The preparation method provided in this example is basically the same as the preparation method provided in Example 1, except that the specific operating conditions are different.
[0066] Specifically, the surfactant used is cetyltrimethylammonium bromide (CTAB), the carbon nanotubes are multi-walled carbon nanotubes, and the mass ratio of the carbon nanotubes to the surfactant is 1:2, the first The addition rate of the mixture was 10 mg / ml, the ultrasonic time was 30 min, and the standing time was 1 h. The concentration of the graphene oxide dispersion is...
PUM
| Property | Measurement | Unit |
|---|---|---|
| specific surface area | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More