Graphene-hydrotalcite-like compound and preparation method and application thereof
A technology of hydrotalcite and graphene, which is applied in the field of graphene-hydrotalcite-like composites and its preparation, to achieve excellent anti-friction and anti-wear properties, high yield, and improved stability
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[0038] Embodiment 1. Graphene-magnesium-aluminum hydrotalcite composite and its preparation method and application
[0039] 1. Preparation of graphene-magnesium-aluminum hydrotalcite composite
[0040] 1) One-step preparation of organic modified hydrotalcite: aluminum hydroxide is used as aluminum source, magnesium nitrate hexahydrate is used as magnesium source, 0.3mol / L sodium hydroxide solution is used as precipitant, and the organic modifier is sodium stearate . The concentration of the metal salt in the reaction solution is maintained at 0.3 mol / L, the molar ratio of magnesium to aluminum metal ions is 2:1, and the amount of organic modifier is the same as the molar amount of aluminum hydroxide. Prepare a certain amount of magnesium salt solution and precipitant solution according to the above requirements. Weigh the required amount of aluminum hydroxide powder and modifier powder in a reactor lined with polytetrafluoroethylene and mix them evenly; add the magnesium salt sol...
Example Embodiment
[0057] Embodiment 2. Graphene oxide-cobalt-aluminum hydrotalcite composite and its preparation method and application
[0058] 1. Preparation of graphene oxide-organic modified cobalt-aluminum hydrotalcite composite
[0059] 1) One-step preparation of organically modified hydrotalcite: aluminum hydroxide is used as aluminum source, cobalt nitrate hexahydrate is used as cobalt source, 0.2 mol / L sodium hydroxide solution is used as precipitating agent, and the organic modifier is sodium laurate. The concentration of the metal salt in the reaction solution is maintained at 0.25 mol / L, the molar ratio of cobalt-aluminum metal ions is 3:1, and the amount of organic modifier is the same as the molar amount of aluminum hydroxide. Prepare a certain amount of cobalt salt solution and precipitant solution according to the above requirements. Weigh the required amount of aluminum hydroxide powder and modifier powder in a reactor lined with polytetrafluoroethylene, and mix them evenly; add th...
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