Copper-graphene composite material and method for preparation of graphene film on copper-based metal surface
A composite material and graphene technology, which is applied to copper-metal composite materials and their preparation, and the preparation of graphene films on copper-based metal surfaces can solve the problems of complex process, difficult control, and high cost.
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Embodiment 1
[0016] Embodiment 1: A novel preparation method of graphene thin film, utilizes oxidation-reduction method in combination with pulling coating method to prepare graphene on copper surface.
[0017] Take by weighing 3g particle size and be the graphite powder of 200 mesh, after putting into beaker, add 90ml concentration and be the concentrated H of 98wt%. 2 SO 4 , and kept stirring on a magnetic stirrer, slowly added KMnO 4 12g of powder, stirred in an ice bath for 1.5h, then raised the temperature to 30°C, stirred in a constant temperature water bath for 1h, then raised the temperature to 70°C. After 15 minutes, slowly add 250ml of deionized water to the reaction solution with a pear-shaped bottle for 1.5 hours. After 30 minutes of reaction, quickly add 500ml of deionized water and 30ml of H 2 o 2 , the solution was golden yellow. After stirring and standing still, remove the solid solution in the lower layer, wash it with dilute HCl 5wt%, centrifuge it, and dry it at 80°...
Embodiment 2
[0023] Embodiment 2: A novel preparation method of graphene film, which utilizes redox method in combination with pull coating method to prepare graphene on copper surface.
[0024] Weigh 3g of natural graphite flakes, put them into a beaker, add 120ml concentration of 98wt% concentrated H 2 SO 4 , and kept stirring on a magnetic stirrer, slowly added KMnO 4 15g of powder was stirred on an ice bath for 1.5h, then the temperature was raised to 40°C, and after stirring in a constant temperature water bath for 1h, the temperature was raised to 60°C. After 15 minutes, slowly add 250ml of deionized water to the reaction solution with a pear-shaped bottle for 1.5 hours. After 30 minutes of reaction, quickly add 500ml of deionized water and 40ml of H 2 o 2 , the solution was golden yellow. After stirring and standing still, remove the solid solution in the lower layer, wash it with dilute HCl 5wt%, centrifuge it, and dry it at 80°C to obtain graphite oxide (brown black), grind it...
Embodiment 3
[0029] Embodiment 3: A novel preparation method of graphene film, which utilizes redox method in combination with pull coating method to prepare graphene on copper surface.
[0030] Take by weighing 3g particle size and be the graphite powder of 200 mesh, after putting into beaker, add 90ml concentration and be the concentrated H of 98wt%. 2 SO 4 , and kept stirring on a magnetic stirrer, slowly added KMnO 4 12g of powder, stirred in an ice bath for 1.5h, then raised the temperature to 30°C, stirred in a constant temperature water bath for 1h, then raised the temperature to 70°C. After 15 minutes, slowly add 250ml of deionized water to the reaction solution with a pear-shaped bottle for 1.5 hours. After 30 minutes of reaction, quickly add 500ml of deionized water and 30ml of H 2 o 2 , the solution was golden yellow. After stirring and standing still, remove the solid solution in the lower layer, wash it with dilute HCl 5wt%, centrifuge it, and dry it at 80°C to obtain grap...
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