A kind of preparation method of graphene
A graphene and graphite technology, applied in the field of nanomaterials, can solve the problems of incomplete reduction, large amount of oxidant, time-consuming, etc., and achieve the effects of improving reduction efficiency, optimizing the preparation process, and shortening the preparation process
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0026] In the first step, cool 500-mesh natural flake graphite, sodium nitrate, potassium permanganate, concentrated sulfuric acid, a ball mill jar (polytetrafluoroethylene material) and grinding balls (zirconia material) with escape holes to 0°C, and Put 0.6g of sodium nitrate, 3g of potassium permanganate, and 20mL of concentrated sulfuric acid into a ball mill and mix them evenly. Add 2g of graphite, 60g of dry ice and 350g of balls. Ball mill for 2 hours at a speed of 250rpm. After that, add 45g of ice cubes to the ball mill tank, and then ball mill for 1 hour. During the ball milling process, the room temperature should be controlled at 15-25°C;
[0027] In the second step, add 200mL deionized water to the ball mill, stir evenly, pour out the graphite oxide suspension from the ball mill, add 9mL of 30% hydrogen peroxide, stir and react in a water bath at 90°C for 1 hour, and drop into sodium hydroxide solution , adjust the pH value to 8, and sonicate for 1 h;
[0028] In...
Embodiment 2
[0031] In the first step, freeze 500-mesh natural flake graphite, sodium nitrate, potassium permanganate, concentrated sulfuric acid, a ball mill jar (made of polytetrafluoroethylene) and balls (made of zirconia) with escape holes to 0°C, and 1.1g of sodium nitrate, 4g of potassium permanganate, and 40mL of concentrated sulfuric acid were placed in a ball mill and mixed evenly. Ball mill for 3 hours at a speed of 250rpm. After that, add 92g of ice cubes to the ball mill tank, and then ball mill for 2 hours. During the ball milling process, the room temperature is controlled at 20-25°C;
[0032] In the second step, add 250mL deionized water to the ball mill, stir evenly, pour out the graphite oxide suspension from the ball mill, add 10mL of 30% hydrogen peroxide, stir and react in a water bath at 90°C for 1 hour, and then add sodium hydroxide solution dropwise , adjust the pH value to 8, and sonicate for 1 h;
[0033] The subsequent preparation process is the same as that of E...
Embodiment 3
[0035] In the first step, freeze 500-mesh natural flake graphite, sodium nitrate, potassium permanganate, concentrated sulfuric acid, a ball mill jar (made of polytetrafluoroethylene) and balls (made of zirconia) with escape holes to 0°C, and Put 0.8g of sodium nitrate, 3.5g of potassium permanganate, and 30mL of concentrated sulfuric acid into a ball mill and mix them evenly. Add 2g of graphite, 98g of dry ice and 350g of balls. Mill on the ball mill for 2 hours at a speed of 250rpm. After that, add 84g of ice cubes to the ball mill tank, and then mill for 1 hour. During the milling process, the room temperature is controlled at 20-25°C;
[0036] In the second step, add 200mL deionized water to the ball mill, stir evenly, pour out the graphite oxide suspension from the ball mill, add 10mL of 30% hydrogen peroxide, stir and react in a water bath at 90°C for 1 hour, and then add sodium hydroxide solution dropwise , adjust the pH value to 8, and sonicate for 1 h;
[0037] The s...
PUM
| Property | Measurement | Unit |
|---|---|---|
| specific surface area | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More