Method for preparing graphene through one step of oxidation and reduction
A graphene and graphene dispersion technology, applied in the field of preparing graphene by one step of redox, can solve problems such as time-consuming, difficult to large-scale industrial production, low efficiency, etc., and achieve the effect of shortening reaction time and improving production efficiency
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
example 1
[0055] The above-mentioned improved Hummers method is used to oxidize graphite powder with an average particle size of 13um to graphite oxide, DMSO (dimethyl sulfoxide) and distilled water are prepared into a mixed solution in a volume ratio of 1:5, and the resulting solution is placed in a water bath Heat to 40℃; then add graphite oxide to the mixed solution and control the concentration of graphite oxide to 0.55g / L, while adding a certain quality of tea polyphenols to make the concentration of tea polyphenols 2.0g / L; then add the solution Put it in an ultrasonic cleaning machine with 50kHz working frequency and 700W ultrasonic treatment (if the temperature exceeds 40°C during the ultrasonic process, reduce it to 40°C and continue ultrasonic treatment) for 30 minutes, and then use the obtained graphene dispersion The 0.22um filter membrane is vacuum filtered and cleaned, and finally the product is vacuum freeze-dried to obtain graphene. Use a scanning electron microscope to ob...
example 2
[0057] Use the above-mentioned improved Hummers method to oxidize graphite powder with an average particle size of 6.5um into graphite oxide, prepare a mixed solution of DMAc and distilled water at a volume ratio of 1:1, and heat the resulting solution to 80°C in a water bath; Add graphite oxide to the mixed solution and control the concentration of graphite oxide to 1.0g / L. At the same time add a certain quality of salidroside to make the concentration of salidroside 4.0g / L; then place the solution in ultrasonic cleaning The machine is ultrasonically treated with a working frequency of 50kHz and a power of 1000W (if the temperature exceeds 80°C during the ultrasonic process, it will be reduced to 80°C and the ultrasonic treatment will continue) for 20 minutes, and then the obtained graphene dispersion is used with 0.22um The filter membrane is vacuum filtered and cleaned, and finally the product is vacuum freeze-dried to obtain graphene. An atomic force microscope was used to ...
example 3
[0059] The above-mentioned improved Hummers method was used to oxidize graphite powder with an average particle size of 2.6um to graphite oxide. DMAc, NMP and distilled water were prepared into a mixed solution according to the volume ratio of 1:1:1, and the resulting solution was heated in a water bath to 60℃; Then add graphite oxide to the mixed solution and control the concentration of graphite oxide to 3.0g / L, while adding a certain quality of anthocyanin to make the concentration of anthocyanin 2.5g / L; then place the solution in Ultrasonic treatment is performed in the ultrasonic cleaning machine with a working frequency of 60kHz and a power of 800W (if the temperature exceeds 60°C during the ultrasonic process, the temperature is reduced to 60°C and then the ultrasonic treatment is continued) for 60 minutes, and then the graphene dispersion obtained is used for 0.22 The um filter membrane is vacuum filtered and cleaned, and finally the product is vacuum freeze-dried to obt...
PUM
| Property | Measurement | Unit |
|---|---|---|
| Horizontal size | aaaaa | aaaaa |
| Thickness | aaaaa | aaaaa |
| Specific surface area | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More