Preparation method of graphite oxide
A technology of graphite and compounds, which is applied in the field of preparation of graphite oxide from graphite, which achieves the effects of low equipment requirements, reduced risk, and improved peeling effect
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Embodiment 1
[0032] Using natural graphite as raw material, put container A in an ice bath, add 10 grams of 1500 mesh natural graphite, 200 ml of 98% concentrated sulfuric acid, 3.5 grams of sodium nitrate and 21 grams of potassium permanganate, and keep the temperature of the solution at about 10 °C , and stirred for 1 hour. The reactants were heated to 70°C and reacted for 2 hours. The resulting reaction solution was poured into Vessel B containing 5 liters of ice-water mixture. Add 50 milliliters of 30% hydrogen peroxide solution to obtain graphite oxide dispersion.
[0033] After 8 times of filtration and washing, a neutral graphite oxide dispersion can be obtained. Graphite oxide powder was obtained after drying.
[0034] Optical microscope photo see figure 1 and figure 2 .
Embodiment 2
[0036] Using natural graphite as raw material, put container A in an ice bath, add 10 grams of 50-mesh natural graphite, 220 ml of 98% concentrated sulfuric acid, 4.0 grams of sodium nitrate and 24 grams of potassium permanganate, and keep the solution temperature at 0 °C or so, stirring for 10 hours. The reactants were heated to 90°C and reacted for 5 hours. The resulting reaction solution was poured into container B containing 5 liters of 0°C water. Add 50 milliliters of 30% hydrogen peroxide solution to obtain graphite oxide dispersion.
[0037] After 8 times of filtration and washing, a neutral graphite oxide dispersion can be obtained. Graphite oxide powder was obtained after drying.
Embodiment 3
[0039] Using natural graphite as raw material, put container A in an ice bath, add 10 grams of 12000 mesh natural graphite, 153 ml of 98% concentrated sulfuric acid, 2.7 grams of sodium nitrate and 16 grams of potassium permanganate, and keep the solution temperature at 15 °C or so, stirring for 5 hours. The reactants were heated to 50°C and reacted for 0.5 hours. The resulting reaction solution was poured into container B containing 5 liters of 10°C water. Add 50 milliliters of 30% hydrogen peroxide solution to obtain graphite oxide dispersion.
[0040] After 8 times of filtration and washing, a neutral graphite oxide dispersion can be obtained. Graphite oxide powder was obtained after drying.
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