Nitrogenous hierarchical-pore carbon material, and preparation method and application thereof
A technology of multi-level porous carbon materials, which is applied in the preparation of the above-mentioned square nitrogen-containing hierarchical porous carbon materials, in the field of nitrogen-containing multi-level porous carbon materials, can solve the problems of less research on the recycling and utilization of waste cigarette butts, and achieve excellent electrical conductivity , the effect of high specific surface
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0027] The preparation method of a kind of nitrogen-containing hierarchical porous carbon material of the present invention is specifically implemented according to the following steps:
[0028] Step 1, preparing an aqueous solution with a concentration of 0.5-1 g / ml urea;
[0029] Step 2, according to the mass volume ratio of the cigarette filter tip and the urea solution being 0.01-0.05 g / ml, soaking the recovered cigarette filter tip in the urea solution prepared in step 1 for 10-20 minutes. Then place it in an oven for 20-30 minutes, set the temperature at 70-100°C, and then soak it in the ethanol dispersion of graphene oxide for 30-60s. The concentration of the ethanol dispersion of graphene oxide is 0.5-1g / L. In order to allow more graphene oxide to enter the cigarette filter, this process was repeated 20 to 30 times, and left for 2 to 6 minutes each time. After drying, the mass of a single cigarette filter increases by 5-20mg.
[0030] Step 3, putting the cigarette fi...
Embodiment 1
[0034] Dissolve 10 g of urea in 20 ml of deionized water, then soak the cigarette filter in the urea solution for 20 minutes, place it in an oven for 30 minutes after soaking, and set the temperature to 70°C. 1 mg graphene oxide was ultrasonically dispersed in 2 ml ethanol. Then soak the dried cigarette filter in the urea solution for 30 seconds in the ethanol dispersion of graphene oxide, take it out, put it on a petri dish for 2 minutes, and then soak it again. This process is repeated 20 times. Finally, put it in a tube furnace for carbonization, the carbonization temperature is 600°C, keep warm for 2h, and the heating rate is 5-10°C / min. After carbonization, a nitrogen-containing hierarchical porous carbon material is obtained. Its scanning electron microscope picture is as figure 1 As shown, the pores distributed on the surface can be clearly seen, and the nitrogen content is the highest.
Embodiment 2
[0036] Dissolve 15g of urea in 20ml of deionized water, then soak the cigarette filter in the urea solution for 15 minutes, place it in an oven for 27 minutes after soaking, and set the temperature at 80°C. 2 mg graphene oxide was dispersed ultrasonically in 2 ml ethanol. Then soak the dried cigarette filter in the urea solution for 40 seconds in the ethanol dispersion of graphene oxide, take it out, put it on a petri dish for 3 minutes, and then soak it again. This process is repeated 22 times. Finally, put it in a tube furnace for carbonization, the carbonization temperature is 900°C, keep warm for 3h, and the heating rate is 5-10°C / min. After carbonization, a nitrogen-containing hierarchical porous carbon material is obtained. Its scanning electron microscope picture is as figure 2 As shown, the pores distributed on the surface can be clearly seen, and the nitrogen content is the highest.
PUM
| Property | Measurement | Unit |
|---|---|---|
| diameter | aaaaa | aaaaa |
| diameter | aaaaa | aaaaa |
| diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More