A preparation method of graphene with adjustable surface micro-nano hole size
A graphene and hole technology, applied in the field of new energy material preparation, can solve the problems of difficult treatment of reaction waste liquid, environmental pollution, high equipment, etc.
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Embodiment 1
[0040] a) Prepare an alumina microsphere milling medium with a diameter of 350 μm, the surface microstructure of which is a micro-nano level of corners, the shape of the corners is similar to a cuboid, the width and height of the corners are between 50nm and 800nm, and the length is about 3 μm;
[0041] b) Take 10 high-pressure graphite balls, the graphite balls have a diameter of 10 mm and a total mass of 10 g, and mix them with the alumina microball milling medium obtained in step a), and the mass ratio of the two is 1:1 to obtain a mixture A;
[0042]c) Put mixture A into a 50ml ball mill jar, the total volume of mixture A accounts for 1 / 4 of the total volume of the ball mill jar; ball mill at a low speed of 500rpm for 0.5h to obtain mixture B;
[0043] d) sieve out the alumina microsphere grinding medium coated with graphene from the mixture B;
[0044] e) Ultrasonicating the graphene-coated alumina microball mill in alcohol with an ultrasonic power of 45W for 5 minutes to...
Embodiment 2
[0048] a) Prepare an alumina microsphere milling medium with a diameter of 350 μm, the surface microstructure of which is a micro-nano level of corners, the shape of the corners is similar to a cuboid, the width and height of the corners are between 50nm and 800nm, and the length is about 3 μm;
[0049] b) Take 8 isostatic graphite squares, the graphite squares have a side length of 10 mm and a total mass of 16 g, and mix them with the alumina microball milling medium obtained in step a), and the mass ratio of the two is 2:1 to obtain a mixture A;
[0050] c) Put mixture A into a 50ml ball mill jar, the total volume of mixture A accounts for one-third of the total volume of the ball mill jar; ball mill at a low speed of 230rpm for 1 hour to obtain mixture B;
[0051] d) sieve out the alumina microsphere grinding medium coated with graphene from the mixture B;
[0052] e) Ultrasonicating the graphene-coated alumina microball mill in DMF with an ultrasonic power of 50 W for 3 mi...
Embodiment 3
[0055] a) Prepare an alumina microsphere milling medium with a diameter of 350 μm, the surface microstructure of which is a micro-nano level of corners, the shape of the corners is similar to a cuboid, the width and height of the corners are between 50nm and 800nm, and the length is about 3 μm;
[0056] b) Take 10 high-pressure graphite balls, the graphite balls have a diameter of 10 mm and a total mass of 10 g, and mix them with the alumina microball milling medium obtained in step a), and the mass ratio of the two is 1:2 to obtain a mixture A;
[0057] c) Put the mixture A into a 50ml ball mill jar, the total volume of the mixture A accounts for 1 / 4 of the total volume of the ball mill jar; ball mill at a low speed of 800rpm for 0.1h to obtain the mixture B;
[0058] d) sieve out the alumina microsphere grinding medium coated with graphene from the mixture B;
[0059] e) Ultrasonicating the graphene-coated alumina microball mill in water with an ultrasonic power of 60 W for ...
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