Preparation method of nano-copper
A technology of nano-copper and copper salt, which is applied in the field of nano-materials, can solve the problems of low product purity, and achieve the effects of simple process, mild reaction conditions and good product performance
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[0021] Example 1: Dissolve 0.01 mol of copper acetate in 100 ml of ethanol, add 5 ml of oleic acid and 0.5 g of polyethylene glycol 2000, stir to dissolve, and raise the temperature to 50 degrees. Slowly add 10ml of hydrazine hydrate solution, stir vigorously, the solution gradually turns dark red, indicating the generation of nano-copper, stop heating after 20 minutes. The cooled solution is allowed to stand, centrifuged, and washed repeatedly with ethanol and acetone for more than three times to obtain pure nano-copper.
Example Embodiment
[0022] Example 2: Dissolve 0.01 mol of copper sulfate pentahydrate in 100 ml of diethylene glycol, add 0.5 g of cetyl trimethyl ammonium bromide and 0.8 g of polyvinyl alcohol 300,000, and raise the temperature to 100 degrees. Dissolve 0.02mol sodium hypophosphite in 50ml diethylene glycol, slowly add it to the above solution and stir vigorously. The solution turns purple-red, indicating that nano-copper is produced, and the heating is stopped after 20 minutes. The subsequent operation is the same as in Example 1.
Example Embodiment
[0023] Example 3: Dissolve 0.01 mol of copper nitrate in 100 ml of ethylene glycol, add 0.6 g of dodecyl trimethyl ammonium chloride and 2 g of polyvinylpyrrolidone (K30), and raise the temperature to 40 degrees. Dissolve 0.01 mol sodium borohydride in 50 ml of ethylene glycol, slowly add it to the above solution and stir vigorously, the solution turns yellowish brown, indicating the production of nano-copper, and the reaction is stopped after 20 minutes. The subsequent operation is the same as in Example 1.
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