Preparation method of monolayer and mono-crystal graphene
A single-crystal graphene, single-layer technology, applied in the field of nanomaterials, can solve the problems of unstable electronic properties of graphene, hindering electron transportation, etc., and achieve the effect of inhibiting a large number of nucleation, reducing nucleation density, and strong controllability
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[0031] Example 1:
[0032] A preparation method of single-layer single-crystal graphene, comprising the following steps:
[0033] Preparation stage: acidizing the polycrystalline copper foil: ultrasonically clean the polycrystalline copper foil with glacial acetic acid, ethanol, and deionized water for 5 minutes, and then dry the polycrystalline copper foil with nitrogen;
[0034] Step a: put the acidified polycrystalline copper foil into a semi-closed quartz test tube, place the polycrystalline copper foil on the mouth of the semi-closed quartz test tube, put the semi-closed quartz test tube into the constant temperature zone of the tube furnace, and put the The weighing bottle with polystyrene is placed in the end of the tube furnace near the air inlet. The weighing bottle is 34.5 cm away from the semi-closed quartz test tube. The tube furnace is evacuated and argon gas is introduced. This step is repeated three times to remove the tube. The air in the furnace is filled wit...
Example Embodiment
[0039] Example 2:
[0040] A preparation method of single-layer single-crystal graphene, comprising the following steps:
[0041] Preparation stage: acidizing the polycrystalline copper foil: ultrasonically clean the polycrystalline copper foil with 10% hydrochloric acid solution, ethanol, and deionized water for 8 minutes, and then dry the polycrystalline copper foil with nitrogen;
[0042] Step a: put the acidified polycrystalline copper foil into a semi-closed quartz test tube, place the polycrystalline copper foil on the mouth of the semi-closed quartz test tube, put the semi-closed quartz test tube into the constant temperature zone of the tube furnace, and put the The weighing bottle with polystyrene is placed in the end of the tube furnace near the air inlet, the weighing bottle is 32.5 cm away from the semi-closed quartz test tube, and the tube furnace is evacuated and argon gas is introduced. This step is repeated three times to remove the tube. The air in the furnac...
Example Embodiment
[0046] Example 3
[0047] A preparation method of single-layer single-crystal graphene, comprising the following steps:
[0048] Preparation stage: acidizing the polycrystalline copper foil: ultrasonically clean the polycrystalline copper foil with glacial acetic acid, ethanol and deionized water for 7 minutes in turn;
[0049] Step a: Put the acidified polycrystalline copper foil into the semi-closed quartz test tube, put the semi-closed quartz test tube into the tube furnace, and put the weighing bottle containing polystyrene into the tube furnace near the air inlet One end of the weighing bottle is 40cm away from the semi-closed quartz test tube, and argon is introduced into the tube furnace to fill the tube furnace with argon, and the argon flow rate is 500sccm;
[0050] Step b: continue to feed argon gas, heat the polycrystalline copper foil to 800°C, and then keep the temperature constant for 30min;
[0051] Step c: Stop feeding argon, start feeding hydrogen, the flow ...
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