Method for preparing nano metal oxides and nano metal powder
A nano-metal powder and nano-metal technology, applied in the direction of nanotechnology, nanotechnology, metal processing equipment, etc., can solve the problems of reducing the nanometer level, unavoidable agglomeration and sintering, difficult salt particle size, etc., to solve the problem of agglomeration and sintering , easy large-scale production, and the effect of simple preparation method
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Embodiment 1
[0043] Example 1: Prepare 2 L of potassium sulfate solution with a concentration of 0.1 mol / L with deionized water, add polyacrylic acid with a salt mass of 5%, and dissolve it. Under the condition of stirring, drop the potassium sulfate solution containing polyacrylic acid into 50 liters of ethanol, wash the precipitate with ethanol for 1-2 times, and obtain nanometer potassium sulfate after drying. Weigh 20 grams of nano-potassium sulfate, disperse it in 200 ml of ethanol, add 0.5 grams of stearic acid, and keep stirring at 50° C. for 2 hours. After centrifuging the ethanol dispersion of nano-potassium sulfate, disperse nano-potassium sulfate in 200ml of xylene, add 10g of nickel carbonate, stir at 80°C for 2 hours, centrifuge, dry, calcinate at 1000°C for 2 hours, wash with water, and dry to obtain nano Nickel oxide.
Embodiment 2
[0044] Example 2: Prepare 2 L of potassium sulfate solution with a concentration of 0.1 mol / L with deionized water, add polyacrylic acid with a salt mass of 5%, and dissolve it. Under the condition of stirring, drop the potassium sulfate solution containing polyacrylic acid into 50 liters of ethanol, wash the precipitate with ethanol for 1-2 times, and obtain nanometer potassium sulfate after drying. Weigh 20 grams of nano-potassium sulfate, disperse it in 200 ml of ethanol, add 0.5 grams of stearic acid, and keep stirring at 30° C. for 2 hours. After centrifuging the ethanol dispersion of nano-potassium sulfate, disperse nano-potassium sulfate in 200ml of xylene, add 10g of nickel carbonate, stir at 80°C for 2 hours, centrifuge, dry, calcinate at 1000°C for 2 hours, wash with water, and dry to obtain nano Nickel oxide.
Embodiment 3
[0045] Example 3: Prepare 2 L of potassium sulfate solution with a concentration of 0.1 mol / L with deionized water, add polyacrylic acid with a salt mass of 5%, and dissolve it. Under the condition of stirring, drop the potassium sulfate solution containing polyacrylic acid into 50 liters of ethanol, wash the precipitate with ethanol for 1-2 times, and obtain nanometer potassium sulfate after drying. Weigh 20 grams of nano-potassium sulfate, disperse it in 200 ml of ethanol, add 0.5 grams of stearic acid, and keep stirring at 60° C. for 2 hours. After centrifuging the ethanol dispersion of nano-potassium sulfate, disperse nano-potassium sulfate in 200ml of xylene, add 10g of nickel carbonate, stir at 80°C for 2 hours, centrifuge, dry, calcinate at 1000°C for 2 hours, wash with water, and dry to obtain nano Nickel oxide.
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