Preparation method for graphite oxide with low oxidizability
A technology of oxidation degree and graphite, applied in the field of materials, can solve the problems of no research on GO stripping behavior, long time, unfavorable production, etc.
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Embodiment 1
[0011] A preparation method of graphite oxide with low oxidation degree, the steps are as follows: add 50ml concentrated sulfuric acid and 0.5g graphite powder in a three-necked flask, stir evenly, cool to 0°C in an ice-water bath, then slowly add 0.5g permanganate Potassium, slowly raise the temperature to 35°C, react for 2 hours, then slowly raise the temperature to 70°C, react for half an hour, until the potassium permanganate is completely consumed, and obtain GO with a low oxidation degree. After the reaction is completed, pour it into a large amount of ice water , centrifugal sedimentation, then washed 6 times with 10% aqueous hydrochloric acid solution, washed three times with deionized water, centrifuged to collect the product, and finally dried in a vacuum oven at 60°C to obtain the product.
Embodiment 2
[0013] A kind of preparation method of graphite oxide with low degree of oxidation, the steps are as follows: add 50ml concentrated sulfuric acid and 0.5g graphite powder in a three-necked flask, stir evenly, cool to 0°C in an ice-water bath, then slowly add 1.0g permanganate Potassium, slowly raise the temperature to 35°C, react for 2 hours, then slowly raise the temperature to 70°C, react for half an hour, until the potassium permanganate is completely consumed, and obtain GO with a low oxidation degree. After the reaction is completed, pour it into a large amount of ice water , centrifugal sedimentation, then washed 6 times with 10% aqueous hydrochloric acid solution, washed three times with deionized water, centrifuged to collect the product, and finally dried in a vacuum oven at 60°C to obtain the product.
Embodiment 3
[0015] A kind of preparation method of graphite oxide with low degree of oxidation, the steps are as follows: add 50ml concentrated sulfuric acid and 0.5g graphite powder in there-necked flask, stir evenly, cool to 0 DEG C in ice-water bath, slowly add the permanganate of 1.5g subsequently Potassium, slowly raise the temperature to 35°C, react for 2 hours, then slowly raise the temperature to 70°C, react for half an hour, until the potassium permanganate is completely consumed, and obtain GO with a low oxidation degree. After the reaction is completed, pour it into a large amount of ice water , centrifugal sedimentation, then washed 6 times with 10% aqueous hydrochloric acid solution, washed three times with deionized water, centrifuged to collect the product, and finally dried in a vacuum oven at 60°C to obtain the product.
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