Method for preparing nano-zinc oxide sol and zinc oxide submicron spheres
A nano-zinc oxide, zinc oxide technology, applied in zinc oxide/zinc hydroxide, nanotechnology, nanotechnology and other directions, can solve the problems of complex reaction system and preparation process, achieve good compatibility, simple equipment, high yield Effect
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Embodiment 1
[0040] (1) Take 1.0mmol of zinc acetate dihydrate and add it to 40mL of polyethylene glycol 200, heat it to 180°C, and react for 30min under stirring to form a white turbid liquid.
[0041] (2) Cool the above reaction system to room temperature, centrifuge at 25°C and 11000rpm for 20min to separate white precipitate and sol clear solution. The resulting sol clear solution is nano zinc oxide sol with a particle size of 10~80nm, and the sol clear solution is retained at 30°C. spare.
[0042] (3) Wash the white precipitate 3 times with deionized water, put the washed precipitate in an oven and dry at 80°C to obtain zinc oxide submicron spheres with a particle size of 130-640 nm.
[0043] The characterization of the prepared nano zinc oxide sol and zinc oxide submicron spheres is as follows: Figure 1~6 As shown, the particle size of the nano zinc oxide sol is 10-80 nm, and the particle size of the zinc oxide submicron spheres is 130-640 nm.
Embodiment 2
[0045] (1) Take 1.0 mmol zinc acetate dihydrate and add it to 40 mL polyethylene glycol 400, heat it to 180°C, and react for 30 minutes under stirring to form a white turbid liquid.
[0046] (2) Cool the above reaction system to room temperature, centrifuge at 25°C, 11000rpm for 20min to separate white precipitate and sol clear solution. The resulting sol clear solution is nano zinc oxide sol with a particle size of 20~90nm, and the sol clear solution is retained at 30°C spare.
[0047] (3) Wash the white precipitate 4 times with deionized water, put the washed precipitate in an oven, and dry at 80°C to obtain zinc oxide submicron spheres with a particle size of 225-685 nm.
[0048] The characterization of the prepared zinc oxide submicron spheres is as follows: Figure 7 Shown.
Embodiment 3
[0050] (1) Take 1.0mmol of zinc acetate dihydrate and add it to 40mL of polyethylene glycol 600, heat to 180°C, and react for 30min under stirring to form a white turbid liquid.
[0051] (2) Cool the above reaction system to room temperature, centrifuge at 25℃, 11000rpm for 20min to separate white precipitate and sol clear solution. The obtained sol clear solution is nano zinc oxide sol with a particle size of 30~110nm, and the sol clear solution is kept at 30℃ spare.
[0052] (3) Wash the white precipitate 3 times with deionized water, put the washed precipitate in an oven and dry at 80°C to obtain zinc oxide submicron spheres with a particle size of 380-775nm.
[0053] The characterization of the prepared zinc oxide submicron spheres is as follows: Figure 8 Shown.
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