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Preparation method of high purity nano-zinc oxide

A technology of nano-zinc oxide with high purity, which is applied in the field of preparation of nano-zinc oxide, which can solve the problems of inconvenient use and insufficient purity of nano-zinc oxide, and achieve the effect of convenient use, small average particle size and high purity

Active Publication Date: 2019-01-04
河北宏贸环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the nano-zinc oxide prepared by the existing method, such as the patent of CN105036178A, the prepared nano-zinc oxide is not pure enough and mixed with a large amount of impurities, which brings inconvenience to people's use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A preparation method of high-purity nano zinc oxide, the specific steps are as follows:

[0023] Step 1, completely dissolving zinc sulfate in water to obtain a zinc sulfate solution with a mass fraction of 17%, adding potassium carbonate and apple extract to the zinc sulfate solution and stirring at room temperature until the reaction is complete, zinc sulfate, potassium carbonate and apple extract The mass ratio of the fruit is 161:138:13. The apple extract is washed and freeze-dried at minus 10 degrees Celsius for 14 minutes, crushed to 60 mesh, and enzymatically hydrolyzed at 33 degrees Celsius and pH value of 6.3 to inactivate the enzyme. And filtered to get, centrifuged to get white precipitate Zn 5 (CO 3 ) 2 (OH) 6 ;

[0024] In step 2, the above-mentioned precipitate, 1,1-cyclopropyldicarboxylic acid, modifier and toluene are ball-milled in a ball mill, and then irradiated with microwaves for 18 minutes to obtain the first mixture;

[0025] Step 3, the firs...

Embodiment 2

[0028] A preparation method of high-purity nano zinc oxide, the specific steps are as follows:

[0029] Step 1, zinc sulfate is completely dissolved in water to obtain a zinc sulfate solution with a mass fraction of 16%, potassium carbonate and apple extract are added to the zinc sulfate solution and stirred at room temperature until the reaction is complete, centrifuged to obtain a white precipitate Zn 5 (CO 3 ) 2 (OH) 6 ;

[0030] Step 2: Mill the above precipitate, 1,1-cyclopropyldicarboxylic acid, modifier and toluene in a ball mill evenly, and the modifier includes the following raw materials in parts by weight: 4 parts of aloe vera gel, 10.6 parts of magnesium stearate parts, 48 ​​parts of n-hexane, 2.6 parts of benzoic acid and 5.8 parts of polyvinylpyrrolidone, the mass volume ratio of precipitate, 1,1-cyclopropyldicarboxylic acid, modifier and toluene is 10g: 12mL: 28mL: 68mL , and then irradiated in microwave for 17 minutes to obtain the first mixture;

[0031] ...

Embodiment 3

[0034] A preparation method of high-purity nano zinc oxide, the specific steps are as follows:

[0035] Step 1, completely dissolving zinc sulfate in water to obtain a zinc sulfate solution with a mass fraction of 20%, adding potassium carbonate and apple extract to the zinc sulfate solution and stirring at room temperature until the reaction is complete, zinc sulfate, potassium carbonate and apple extract The mass ratio of the fruit is 161:138:15. The apple extract is washed and freeze-dried at minus 10 degrees Celsius for 15 minutes, crushed to 80 mesh, and enzymatically hydrolyzed at 29 degrees Celsius and pH value of 6.1 to inactivate the enzyme. And filtered to get, centrifuged to get white precipitate Zn 5 (CO 3 ) 2 (OH) 6 ;

[0036] Step 2: Mill the above-mentioned precipitate, 1,1-cyclopropyldicarboxylic acid, modifier and toluene in a ball mill evenly. The modifier includes the following raw materials in parts by weight: 4.8 parts of aloe gel, 12.7 parts of magnes...

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PUM

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Abstract

The invention discloses a preparation method of high purity nano-zinc oxide. The preparation method comprises the following specific steps: step one, adding potassium carbonate and an apple extract into a zinc sulfate solution; stirring until a mixture completely reacts and centrifuging to obtain white precipitate Zn5(CO3)2(OH)6; step two, putting the precipitate, 1,1-cyclopropanedicarboxylic acid, a modifier and methylbenzene into a ball mill, carrying out uniform ball milling and microwave irradiation to obtain a first mixture; step three, carrying out magnetic stirring on the first mixtureand acetone for 6 to 8 hours; then treating in the electric field, carrying out vacuum filtration, drying and grinding to obtain a second mixture; step four, calcining the second mixture, and naturally cooling the second mixture to room temperature, thus obtaining a finished product. According to the preparation method disclosed by the invention, the nano-zinc oxide is prepared by reacting zinc sulfate and potassium carbonate in the environment of an apple extract to obtain white precipitate, carrying out mixed ball milling on the white precipitate and the modifier, carrying out electric fieldtreatment and the like and finally calcining; the obtained nano-zinc oxide has high purity and small average particle size.

Description

technical field [0001] The invention relates to the field of nano-zinc oxide, in particular to a preparation method of high-purity nano-zinc oxide. Background technique [0002] With the development of science and technology and the rapid growth of industry, more and more nanotechnology is applied in our production. [0003] Nanotechnology is a science and technology that uses single atoms and molecules to manufacture substances. It studies the properties and applications of materials with a structural size in the range of 1 to 100 nanometers. Nanotechnology is the product of the combination of modern science and modern technology. Nanoscience and technology will trigger a series of New science and technology, such as: nanophysics, nanobiology, nanochemistry, nanoelectronics, nanoprocessing technology and nanometrics, etc. [0004] Nano-zinc oxide is a product of nanotechnology. Nano-zinc oxide is a multifunctional new inorganic material with a particle size of about 1-100 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G9/02B82Y40/00
CPCB82Y40/00C01G9/02C01P2004/64C01P2006/80
Inventor 刘建宏
Owner 河北宏贸环保科技有限公司