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A kind of graphene production method based on high-efficiency surfactant
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A technology of surfactants and production methods, applied in the direction of graphene, chemical instruments and methods, nano-carbon, etc., can solve the problems affecting the application and destroying the electrical properties of graphene, so as to improve the utilization rate, make the production method scientific and reasonable, reduce the pollution effect
Active Publication Date: 2021-06-08
中科国思生命健康科技(广州)有限公司
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Problems solved by technology
However, a large number of defects are generated during the oxidation and reduction process, which destroys the electrical properties of graphene and affects its application in the field of electronic information.
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Embodiment 1
[0031] Example 1, such as figure 1 and figure 2 Shown, a kind of graphene production method based on efficient surfactant, comprises the following steps:
[0032] Step 1: Cleaning, drying, crushing and cake pressing of biomass waste;
[0033]Step 2: put the biomass waste cake obtained after pressing the cake in step 1 into the carbonization furnace, repeat the vacuuming of the carbonization furnace twice, and then fill it with nitrogen to exhaust the oxygen in the carbonization furnace; then carbonize the biomass waste, The carbonization furnace is raised to 300°C at 20°C / min. After the biomass waste cake is kept at 300°C for 2 hours in the carbonization furnace, the temperature of the carbonization furnace is lowered to normal temperature to complete the carbonization, to obtain charcoal and generate a mixed gas; during this period, nitrogen is kept Keep flowing, the flow rate is 100ml / min;
[0034] Step 3: Take the charcoal that has been carbonized in step 2 and put it i...
Embodiment 2
[0047] Example 2, such as figure 1 and image 3 Shown, a kind of graphene production method based on efficient surfactant, comprises the following steps:
[0048] Step 1: Cleaning, drying, crushing and cake pressing of biomass waste;
[0049] Step 2: put the biomass waste cake obtained after pressing the cake in step 1 into the carbonization furnace, repeat the vacuuming of the carbonization furnace twice, and then fill it with nitrogen to exhaust the oxygen in the carbonization furnace; then carbonize the biomass waste, The carbonization furnace is raised to 300°C at 20°C / min. After the biomass waste cake is kept at 300°C for 2 hours in the carbonization furnace, the temperature of the carbonization furnace is lowered to normal temperature to complete the carbonization, to obtain charcoal and generate a mixed gas; during this period, nitrogen is kept Keep flowing, the flow rate is 100ml / min;
[0050] Step 3: Take the charcoal that has been carbonized in step 2 and put it i...
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Abstract
The invention discloses a method for producing graphene based on a high-efficiency surfactant, which comprises pretreating biomass waste to obtain artificial graphite through carbonization, activation and graphitization, and then using the artificial graphite to produce graphene through a liquid phase exfoliation method; The mixed solution of dimethylformamide and isopropanol is used as the dispersion system, and the graphene is prepared by the ultrasonic exfoliation process. Since there is no influence of chemical reactions such as heavy metal intercalation, oxidant oxidation, and reducing agent reduction, the graphene prepared by the liquid phase exfoliation method Graphene generally does not have the doping of other elements and does not introduce other functional groups, the purity is high, the lattice structure is not destroyed, and the preservation is relatively complete, so its application range is wider; the high-efficiency surfactant based on the present invention provides The production method of graphene is scientific and reasonable, the operation is convenient, the production cost is low, the output and quality of graphene are high, and industrialized large-scale production can be realized.
Description
technical field [0001] The invention relates to the technical field of graphene production, in particular to a graphene production method based on high-efficiency surfactants. Background technique [0002] In recent years, graphene has aroused extensive research interest in the fields of chemistry, physics and materials because of its unique structure and excellent properties. At the same time, the method of using biomass materials to produce high-quality graphene at low cost and in large quantities is of great significance, with good development prospects and great potential. Graphene is a crystal with the thickness of a two-dimensional unit sublayer. Its carbon atoms are arranged in a honeycomb lattice, and it combines excellent electrical, mechanical, optical and thermal properties in the thickness of a single atomic layer. At present, people have made positive progress in the preparation of graphene, which provides a raw material guarantee for the basic research and app...
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