Preparation method and application of graphene material
A technology of graphene and reaction space, which is applied in the field of graphene, can solve the problems of difficult control of graphene quality and great danger, and achieve the effects of low production cost, strong antibacterial property and simple preparation process
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[0022] see figure 1 , the preparation method of graphene material provided by the invention, comprises the following steps:
[0023] 1) Arc heating the reaction space to 3500-3800K in a protective gas environment;
[0024] 2) Pass reaction gas into described reaction space, and described reaction gas comprises acetylene and / or methane;
[0025] 3) Obtain the graphene material of 2-5 layers.
[0026] In the invention, the protective gas is first introduced into the reaction space, and then the reaction space is heated to a certain temperature by an electric arc. Among them, the introduction of protective gas can squeeze all the air out of the reaction space, avoiding the reaction of the reaction gas with the oxygen in the air under high temperature and high pressure conditions; The occurrence of events; on the one hand, the pressure of the reaction space can be controlled to make the reaction more thorough. Preferably, the protective gas is an inert gas. For example, the p...
no. 1 example
[0033] Set the reaction space as a magnetic field environment; feed argon gas to make the pressure of the reaction space 1.2MP; feed a current of 70A, and heat the reaction space to 3500K with an electric arc; after reaching the target temperature, there will be a small amount of impurities and the purity 99% methane gas is passed into the reaction space. In order to improve the safety of the experiment, the temperature of argon will be controlled between 50-70°C. Among them, the input amount of methane is 100g; the output of graphene material is 67.50g; at the same time, 22.50g of hydrogen is discharged.
no. 2 example
[0035] Set the reaction space as a magnetic field environment; feed argon gas to make the pressure of the reaction space 1.2MP; feed a current of 110A, and heat the reaction space to 3700K with an electric arc; after reaching the target temperature, there will be a small amount of impurities and the purity 99% methane gas is passed into the reaction space. In order to improve the safety of the experiment, the temperature of argon will be controlled between 50-70°C. Among them, the input amount of methane is 100g; the output of graphene material is 70.50g; at the same time, 23.50g of hydrogen is discharged.
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