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Method for preparing nano ZnO

A technology of nano-zinc oxide and sodium hydroxide, applied in the field of nano-materials, can solve the problems of the preparation method of nano-zinc oxide with complicated steps, unsuitable for industrial production, high cost, etc. Effect

Inactive Publication Date: 2013-06-26
XI'AN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for preparing nano-zinc oxide, which solves the problems that the existing preparation method of nano-zinc oxide has complicated steps, high cost and is not suitable for industrial production

Method used

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  • Method for preparing nano ZnO

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] According to the volume ratio of 1:1, weigh the zinc nitrate solution with a molar concentration of 0.01mol / L and the sodium hydroxide solution with a molar concentration of 0.025mol / L, place the weighed zinc nitrate solution in a beaker, and put the beaker into Ultrasonic cleaning machine, and add a stirring device. Use an alkaline burette to take the weighed sodium hydroxide solution and titrate the zinc nitrate solution. After the titration was completed, ultrasonically stirred for 50 minutes, the parameters of the ultrasonically stirred were 1000 rpm, and the frequency was 10KHz, and milky white liquid was obtained;

[0025] Step 2: aging the milky white liquid obtained in step 1 for 12 hours;

[0026] Step 3: Suction filter the aged liquid obtained in step 2, wash with water and alcohol three times each to obtain a white solid powder, dry in a vacuum drying oven to obtain nanometer zinc oxide.

Embodiment 2

[0028] According to the volume ratio of 1:1, weigh the zinc nitrate solution with a molar concentration of 0.3mol / L and the sodium hydroxide solution with a molar concentration of 0.75mol / L, place the weighed zinc nitrate solution in a beaker, and put the beaker into Ultrasonic cleaning machine, and add a stirring device. Use an alkaline burette to take the weighed sodium hydroxide solution and titrate the zinc nitrate solution. After the titration was completed, ultrasonically stirred for 10 minutes, the parameters of the ultrasonically stirred were 2000 rpm, and the frequency was 20KHz to obtain a milky white liquid;

[0029] Step 2: aging the milky white liquid obtained in step 1 for 24 hours;

[0030] Step 3: Suction filter the aged liquid obtained in step 2, wash with water and alcohol three times each to obtain a white solid powder, dry in a vacuum drying oven to obtain nanometer zinc oxide.

Embodiment 3

[0032] According to the volume ratio of 1:1, weigh the zinc nitrate solution with a molar concentration of 0.5mol / L and the sodium hydroxide solution with a molar concentration of 1.3mol / L, place the weighed zinc nitrate solution in a beaker, and put the beaker into Ultrasonic cleaning machine, and add a stirring device. Use an alkaline burette to take the weighed sodium hydroxide solution and titrate the zinc nitrate solution. After the titration is completed, ultrasonically stir for 30 minutes, the parameters of ultrasonic stirring are 3000 rpm, frequency 40KHz, to obtain milky white liquid;

[0033] Step 2: aging the milky white liquid obtained in step 1 for 36 hours;

[0034] Step 3: Suction filter the aged liquid obtained in step 2, wash with water and alcohol three times each to obtain a white solid powder, dry in a vacuum drying oven to obtain nanometer zinc oxide.

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Abstract

The invention discloses a method for preparing nano ZnO, comprising the following steps: firstly, weighing a zinc nitrate solution with the molar concentration of 0.01-0.5 mol / L and a sodium hydroxide solution with the molar concentration of 0.025-1.3 mol / L according to the volume ratio of the zinc nitrate solution to the sodium hydroxide solution of 1:1, putting the weighed zinc nitrate solutionin a beaker, putting the beaker in an ultrasonic clearing machine and adding a stirring unit, using an alkali burette to weigh the sodium hydroxide solution to carrying out titration on the zinc nitrate solution, after the titration is finish, carrying out ultrasonic stirring for 5-30 min to obtain a milky white liquid; then, aging the milky white liquid; and finally, carrying out extraction filtration, washing and alcohol washing on the aged milky white liquid to obtain white solid powder, and drying to obtain the nano ZnO. The method disclosed in the invention has the advantages of fewer preparation steps, cheaper and easier obtainment of raw materials, milder experiment condition, and lower cost, and is more suitable for industrial production, compared with other methods existing in the prior art.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and in particular relates to a method for preparing nanometer zinc oxide. Background technique [0002] Nano-ZnO is a material with many special properties such as non-migration, fluorescence, piezoelectricity, antibacterial and anti-inflammatory, and anti-ultraviolet. It is widely used in fields such as rubber, textiles, coatings, magnetic materials, gas sensors, and image recording materials. In particular, the use of nano-ZnO in the finishing of wool fabrics enables the fabric to have antibacterial, deodorizing, disinfecting, and anti-ultraviolet functions. The research on the preparation and application of nano-ZnO at home and abroad is constantly strengthening and deepening. The preparation of nano-ZnO is commonly used in the solid phase method - that is, the generation of ZnCO 3 The precursor is then pyrolyzed to generate nano-ZnO particles and the microemulsion method. Althou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G9/02B82Y40/00
Inventor 朱艳杨向荣邓勇原帅
Owner XI'AN POLYTECHNIC UNIVERSITY