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Preparing method of eight-pod ZnO nanopowder

A nano powder, foot body technology, applied in the field of nano materials, to achieve the effect of low cost, rough surface and high porosity

Inactive Publication Date: 2018-09-11
XIAN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still few reports on the preparation of three-dimensional hierarchical octapod ZnO nanopowders without using any surfactants.

Method used

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  • Preparing method of eight-pod ZnO nanopowder
  • Preparing method of eight-pod ZnO nanopowder

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Effect test

preparation example Construction

[0017] A kind of preparation method of octapod ZnO nanopowder of the present invention, specifically implement according to the following steps:

[0018] Step 1, prepare the N-N dimethylformamide (DMF) solution of anhydrous zinc acetate:

[0019] Use DMF as a solvent to prepare anhydrous zinc acetate solution so that the molar concentration is 0.001-0.1mol / L, and heat the above solution to 60-150°C under magnetic stirring, and record it as solution A;

[0020] Step 2, adding pure water to solution A, the volume ratio of pure water to DMF in step 1 is 1:1-600, and the holding time is 5-90min, and a solid-liquid mixture containing white ZnO precipitate is obtained;

[0021] Step 3, the solid-liquid mixture containing ZnO precipitation obtained in step 2 is centrifuged and washed with absolute ethanol for 3 to 5 times, and then the product after centrifuged washing is dried at 50 to 80°C for 6 to 12 hours to obtain nano ZnO powder.

[0022] The nano-ZnO powder prepared by the m...

Embodiment 1

[0024] Step 1, prepare 30mL of 0.001mol / L anhydrous zinc acetate DMF solution, and then use ultrasonic vibration to obtain a clear and transparent solution, and heat the prepared anhydrous zinc acetate solution to 75°C under magnetic stirring conditions, and record it as solution A ;

[0025] Step 2, add 0.1 mL of pure water to the solution A obtained in step 1, and keep it for 5 minutes to obtain a solid-liquid mixture containing white ZnO precipitate;

[0026] Step 3, the solid-liquid mixture containing ZnO precipitates obtained in step 2 was only centrifuged and washed 5 times with absolute ethanol, and finally the product after centrifuged washing was dried at 80°C for 6 hours to obtain many fine nanoparticles as the basic structural unit The composed three-dimensional hierarchical ZnO nanopowders with octapod morphology.

[0027] The transmission electron micrograph of the ZnO nanopowder that present embodiment obtains is as follows figure 1 As shown, it can be seen fro...

Embodiment 2

[0029] Step 1, prepare 30mL of 0.1mol / L anhydrous zinc acetate DMF solution, and then use ultrasonic vibration to obtain a clear and transparent solution, and heat the prepared anhydrous zinc acetate solution to 150°C under magnetic stirring conditions, and record it as solution A ;

[0030] Step 2, add 30mL of pure water to the solution A obtained in step 1, and keep it for 90 minutes to obtain a solid-liquid mixture containing white ZnO precipitate;

[0031] Step 3, the solid-liquid mixture containing ZnO precipitates obtained in step 2 is only centrifuged and washed 3 times with absolute ethanol, and finally the product after centrifuged washing is dried at 80 ° C for 12 hours to obtain many small nanoparticles as the basic structural unit The composed three-dimensional hierarchical ZnO nanopowders with octapod morphology.

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Abstract

The invention discloses a preparing method of eight-pod ZnO nanopowder. The preparing method comprises the steps of adding purified water in an N-N dimethyl formamide solution of anhydrous zinc acetate, and conducting heat preservation to obtain a solid-liquid mixture containing white ZnO deposit; washing and drying the solid-liquid mixture containing the white ZnO deposit to obtain the ZnO nanopowder. A liquid phase synthesis method which has low cost and high controllability and operability is adopted; meanwhile, in the preparing process, no organic surfactant is added, and then simply through the controllable adjustment of the reactant concentration, the reaction temperature, the reaction time and the solvent volume ratio, the ZnO nanopowder with the eight-pod shape and of a three-dimensional hierarchical structure can be prepared. The ZnO nanopowder has the advantages of having high porosity, a rough surface and a large specific area. The ZnO nanopowder is different from common blocky ZnO, and the three-dimensional hierarchical structure of the ZnO nanopowder is a superstructure which is automatically assembled by multiple fine nanometer units according to a certain growth orientation.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and relates to a preparation method of octapod ZnO nanometer powder. Background technique [0002] Since the specific surface area of ​​nanomaterials increases sharply with the decrease of its grain size, nanomaterials have special effects that their bulk materials do not have, such as surface effects, small size effects, and macroscopic quantum tunneling effects. In view of this, nano-zinc oxide (ZnO) has special properties incomparable to general bulk ZnO in high-temperature superconductivity, electronic devices, catalysts, sensors, antibacterial and deodorization, etc. However, the reported nano-ZnO not only has a simple structure but also cannot avoid the addition of organic surfactants in the preparation process. Usually, the residue of organic surfactant will have a great impact on the performance of nano-ZnO. Therefore, the preparation of ZnO nanopowders with uniform size, go...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G9/02B82Y40/00
CPCB82Y40/00C01G9/02C01P2004/04C01P2004/30
Inventor 梁淑华罗永光孙少东曲洪涛张特杨卿保佳懿苟旭丰
Owner XIAN UNIV OF TECH
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