Preparation and Application of Magnetic Graphene Oxide Composite
A technology of oxidized stones and composites, applied in the direction of alkali metal compounds, alkali metal oxides/hydroxides, chemical instruments and methods, etc., can solve problems such as insufficient capacity and insufficient orientation, and achieve easy-to-obtain and low-cost raw materials , the effect of mild preparation conditions
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Embodiment 1
[0040] Example 1: m G / F =1:2 preparation and application of magnetic graphene oxide composite
[0041] 1.m G / F =1:2 Preparation of Magnetic Graphene Oxide Composite
[0042] ⑴Weigh 0.23g graphite powder, add 50mL dissolved in 0.25g NaNO 3 Concentrated H 2 SO 4 solution, after stirring for 20min, slowly add 6g KMnO 4 After reacting at 35°C for 2 hours, raise the temperature to 80°C, keep warm for 15min, add 200mL distilled water to dilute, heat to boiling and keep warm for 15min, then cool down to room temperature, add 10mL H 2 o 2 After reacting for 6 hours, the solid crude product obtained by suction filtration was centrifuged and washed with dilute hydrochloric acid and distilled water until there was no SO in the centrifuged liquid. 4 2- ; The washed solid was vacuum-dried at 60°C for 12 hours to obtain graphite oxide; 0.2 g of graphite oxide powder was dispersed in 400 mL of deionized water, and ultrasonically stripped at room temperature for 4 hours to obtain a GO...
Embodiment 2
[0047] Example 2: m G / F =1:4 preparation and application of magnetic graphene oxide composite
[0048] 1.m G / F =1:4 Preparation of Magnetic Graphene Oxide Composite
[0049] ⑴Weigh 0.23g graphite powder, add 50mL dissolved in 0.25g NaNO 3 Concentrated H 2 SO 4 solution, after stirring for 20min, slowly add 6g KMnO 4 After reacting at 35°C for 2 hours, raise the temperature to 80°C, keep warm for 15min, add 200mL distilled water to dilute, heat to boiling and keep warm for 15min, then cool down to room temperature, add 10mL H 2 o 2 After reacting for 6 hours, the solid crude product obtained by suction filtration was centrifuged and washed with dilute hydrochloric acid and distilled water until there was no SO in the centrifuged liquid. 4 2- ;The washed solid was vacuum-dried at 60°C for 12h to obtain graphite oxide; 0.2g of graphite oxide powder was dispersed in 400mL of deionized water, and ultrasonically peeled at room temperature for 4h to obtain a GO suspension wit...
Embodiment 3
[0054] Example 3: m G / F =1:6 preparation and application of magnetic graphene oxide composite
[0055] 1.m G / F =1:6 Preparation of Magnetic Graphene Oxide Composite
[0056] ⑴Weigh 0.23g graphite powder, add 50mL dissolved in 0.25g NaNO 3 Concentrated H 2 SO 4 solution, after stirring for 20min, slowly add 6g KMnO 4 After reacting at 35°C for 2 hours, raise the temperature to 80°C, keep warm for 15min, add 200mL distilled water to dilute, heat to boiling and keep warm for 15min, then cool down to room temperature, add 10mL H 2 o 2 After reacting for 6 hours, the solid crude product obtained by suction filtration was centrifuged and washed with dilute hydrochloric acid and distilled water until there was no SO in the centrifuged liquid.4 2- ;The washed solid was vacuum-dried at 60°C for 12h to obtain graphite oxide; 0.2g of graphite oxide powder was dispersed in 400mL of deionized water, and ultrasonically peeled at room temperature for 4h to obtain a GO suspension with ...
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