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Preparation method of zinc oxide nanosphere

A technology of zinc oxide nanometer and zinc salt, which is used in nanostructure manufacturing, zinc oxide/zinc hydroxide, nanotechnology, etc.

Inactive Publication Date: 2010-12-22
HEFEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there have been no reports at home and abroad on the preparation of zinc oxide nanospheres by one-step microwave chemical hydrothermal synthesis.

Method used

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  • Preparation method of zinc oxide nanosphere
  • Preparation method of zinc oxide nanosphere

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Weigh 0.219g of zinc acetate into a 60mL tall beaker, add 10mL of deionized water, stir to dissolve; then measure 1.98mL of triethanolamine into a conical flask, add 50mL of deionized water, stir to dissolve; then add the zinc acetate aqueous solution In the Erlenmeyer flask, continue to stir, a small amount of white flocculent precipitates are formed when mixing; then put the Erlenmeyer flask containing the reaction mixture into a microwave generator for microwave irradiation, set the microwave power to 300W, and the reaction temperature to 60 ℃, microwave time 10min; naturally cool to room temperature after the reaction, a large amount of white precipitate is formed, filter the precipitate, wash with water 3 times; heat the precipitate in an oven for 8 hours at 60°C, collect the white product to obtain the present invention of zinc oxide nanospheres.

[0026] See attached figure 1 , the low magnification field scanning electron micrograph of the zinc oxide nanosphere...

Embodiment 2

[0031]Weigh 0.220g of zinc acetate into a 60mL tall beaker, add 10mL of deionized water, stir to dissolve; then measure 1.32mL of triethanolamine into a conical flask, add 50mL of deionized water, stir to dissolve; then add the zinc acetate aqueous solution In the Erlenmeyer flask, continue to stir, a small amount of white flocculent precipitates are formed when mixing; then put the Erlenmeyer flask containing the reaction mixture into a microwave generator for microwave irradiation, set the microwave power to 300W, and the reaction temperature to 60 ℃, microwave time 10min; naturally cool to room temperature after the reaction, a large amount of white precipitate is formed, filter the precipitate, wash with water 3 times; heat the precipitate in an oven for 8 hours at 60°C, collect the white product to obtain the present invention of zinc oxide nanospheres.

Embodiment 3

[0033] Weigh 0.291g of zinc nitrate in a 60mL tall beaker, add 10mL of deionized water, stir to dissolve; then measure 1.32mL of triethanolamine into the Erlenmeyer flask, add 50mL of deionized water, stir to dissolve; then add zinc acetate aqueous solution In the Erlenmeyer flask, continue to stir, a small amount of white flocculent precipitates are formed when mixing; then put the Erlenmeyer flask containing the reaction mixture into a microwave generator for microwave irradiation, set the microwave power to 300W, and the reaction temperature to 60 ℃, microwave time 10min; naturally cool to room temperature after the reaction, a large amount of white precipitate is formed, filter the precipitate, wash with water 3 times; heat the precipitate in an oven for 8 hours at 60°C, collect the white product to obtain the present invention of zinc oxide nanospheres.

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Abstract

The invention discloses a preparation method of a zinc oxide nanosphere which fills a gap of the prior art on a zinc oxide microsphere / nanosphere. In the invention, the zinc oxide nanosphere is prepared by adopting a microwave chemical hydrothermal synthesis method, that is to say, the zinc oxide nanosphere is prepared by using an aqueous solution of simple zinc sources, such as zinc acetate, and the like and trolamine as a precursor solution through a microwave irradiation process. The preparation method of the zinc oxide nanosphere does not use any templates, additives and organic solvents, has a clean process, friendly environment, lower reaction temperature, and shorter reaction time, and microwave irradiation for 10 minutes at the temperature of 60 DEG C is enough, thereby saving energy sources with simplicity and high efficiency. The zinc oxide nanosphere product has even size distribution with the nanosphere diameter of 250-400nm, monodispersity, high production rate and low cost and is suitable for industrial production, and raw materials are easy to obtain.

Description

technical field [0001] The invention relates to the field of preparation of nanomaterials, in particular to a preparation method of zinc oxide spherical nanomaterials. Background technique [0002] Zinc oxide (ZnO) is a wide bandgap semiconductor material with direct bandgap, its bandgap width is 3.37eV at room temperature, and the exciton binding energy is as high as 60meV. Nanoscale ZnO has a series of excellent optical, electrical, magnetic, mechanical and chemical properties, and has a wide range of applications in solar cells, light-emitting diodes, biosensors, photocatalysis, varistors and other fields. [0003] In the preparation of nanostructures, the assembly of complex two-dimensional and three-dimensional ordered superstructures from one-dimensional and two-dimensional nanostructure units is a very challenging research field. Due to the polar growth characteristics of ZnO crystals, they are oriented in one-dimensional nanorod and rod aggregate structures. Theref...

Claims

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Application Information

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IPC IPC(8): C01G9/02B82B3/00
Inventor 邓崇海胡寒梅韩成良朱仁发
Owner HEFEI UNIV
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