Preparation method of aqueous single-layer graphene solution
A technology of alkene aqueous solution and single-layer graphite, which is applied in the field of graphene, can solve the problems of incomplete reduction, poor electrical performance, small ratio of carbon to oxygen, etc., and achieve the advantages of full reduction, strong reduction and low toxicity Effect
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Embodiment 1
[0025] (1) Weigh 10g of natural graphite powder, put it in a 1000ml reaction bottle, add 1g of calcium nitrate and 5g of potassium nitrate to it, stir well, slowly add 120g of deionized water into the reaction bottle, and control the system temperature to 2 ±1°C, slowly add 2 g of concentrated sulfuric acid with a mass concentration of 98% to the reaction bottle at a constant temperature, control the system temperature not to exceed 15°C, continue stirring, and slowly add 0.2g of high manganese when the system temperature drops to 10°C Potassium oxide, stirring constantly, control the reaction temperature not to exceed 15°C, after 1 hour of reaction, a graphite oxide solution will be obtained.
[0026] (2) Suction filter the graphite oxide solution, wash the filter cake 3 times with dilute hydrochloric acid with a mass concentration of 2% at 30°C, and then wash 4 times with deionized water to obtain a graphite oxide filter cake; configure 100ml, 25g / L graphite oxide aqueous s...
Embodiment 2
[0029] (1) Weigh 10g of natural graphite powder, put it in a 1000ml reaction bottle, add 1g of calcium nitrate and 4g of potassium nitrate to it, stir well, slowly add 100g of deionized water into the reaction bottle, and control the temperature of the system to 2 ±1°C, slowly add 0.5g of concentrated sulfuric acid with a mass concentration of 98% to the reaction bottle at a constant temperature, control the system temperature not to exceed 15°C, continue stirring, and slowly add 0.05g of high manganese when the system temperature drops to 10°C Potassium oxide, stirring constantly, control the reaction temperature not to exceed 15°C, after 1 hour of reaction, a graphite oxide solution will be obtained.
[0030] (2) Suction filter the graphite oxide solution, wash the filter cake 3 times with dilute hydrochloric acid with a mass concentration of 2% at 31°C, and then wash 4 times with deionized water to obtain a graphite oxide filter cake; configure 100ml, 25g / l Graphite oxide ...
Embodiment 3
[0033] (1) Weigh 10g of natural graphite powder, put it in a 100ml reaction bottle, add 2g of calcium nitrate and 4g of potassium nitrate to it, stir well, slowly add 200g of deionized water into the reaction bottle, and control the system temperature to 2 ±1°C, slowly add 1g of concentrated sulfuric acid with a mass concentration of 98% to the reaction bottle at a constant temperature, control the system temperature not to exceed 15°C, continue stirring, and slowly add 2g of potassium permanganate when the system temperature drops to 10°C , keep stirring, and control the reaction temperature not to exceed 15°C, and a graphite oxide solution will be obtained after 1 hour of reaction.
[0034] (2) Suction filter the graphite oxide solution, wash the filter cake 3 times with dilute hydrochloric acid with a mass concentration of 2% at 30°C, and then wash 4 times with deionized water to obtain a graphite oxide filter cake; configure 100ml, 25g / l Graphite oxide aqueous solution, p...
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