ZnO functional nano material and preparation method thereof

A technology of functional nano and zinc oxide nano crystals, applied in the direction of nanotechnology, nanotechnology, chemical instruments and methods, etc., to achieve the effect of low reaction temperature, good uniformity and high purity

Inactive Publication Date: 2020-06-19
XIJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hydrothermal synthesis method is to use water as a solvent in a closed container (autoclave), and generate high pressure by heating the aqueous solution to close to its critical temperature, and the original mixture reacts under this condition, thereby synthesizing and preparing the required Inorganic materials, but it needs to be carried out under high pressure and high temperature conditions

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  • ZnO functional nano material and preparation method thereof
  • ZnO functional nano material and preparation method thereof
  • ZnO functional nano material and preparation method thereof

Examples

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Embodiment 1

[0025] A method for preparing ZnO functional nanomaterials at near room temperature, the ZnO functional nanomaterials have strong purple light absorption, the method comprising:

[0026] (S1) Take 5mL deionized water and 5mL methanol into a dry 100mL beaker according to the volume ratio of 1:1, then stir fully to form a uniform solvent, and heat to 45°C at the same time to obtain methanol / water solution;

[0027] (S2) Use a pipette gun to measure 20 mL of an aqueous zinc acetate solution with a concentration of 0.2 mol / L and drop it into the aqueous methanol solution at 45° C. in step (S1);

[0028] (S3) heating the solution obtained in step (S2) to 50° C. and keeping it warm for 5 minutes to form a uniform solution, and this temperature is conducive to the subsequent reaction, which can make the crystal growth rate appropriate;

[0029] (S4) The solution obtained in step (S3) is added dropwise with a methanol solution of sodium hydroxide until the value displayed by the pH te...

Embodiment 2

[0033] A method for preparing ZnO functional nanomaterials at near room temperature, the method comprising:

[0034] (S1) Add 5mL deionized water and 5mL methanol into a dry 100mL beaker according to the volume ratio of 1:1; then fully stir to form a uniform solvent, and heat to 45°C at the same time;

[0035] (S2) Use a pipette gun to measure 20 mL of zinc acetate aqueous solution with a concentration of 0.2 mol / L and drop it into the methanol / water solution prepared in step (S1);

[0036] (S3) heating the solution obtained in step (S2) to 50° C. and keeping it warm for 5 minutes, the purpose is to form a uniform solution, and this temperature is conducive to subsequent reactions, which can make the crystal growth rate appropriate;

[0037] (S4) Add methanol solution of sodium hydroxide dropwise to the solution obtained in step (S3) until the value displayed by the pH tester is 9, seal the reaction vessel, and raise the temperature to 55° C. and keep it for 2 hours to obtain ...

Embodiment 3

[0041] A method for preparing ZnO functional nanomaterials at near room temperature, the method comprising:

[0042] (S1) Add 5 mL of deionized water and 5 mL of methanol into a dry 100 mL beaker according to the volume ratio of 1:1; then fully stir to form a uniform solvent, and heat to 45 degrees Celsius at the same time;

[0043] (S2) Use a pipette gun to measure a zinc acetate aqueous solution with a concentration of 0.2mol / L and drop it into the methanol / water solution prepared in step (S1);

[0044] (S3) heating the solution obtained in step (S2) to 50° C. and keeping it warm for 5 minutes to form a uniform solution;

[0045] (S4) Add methanol solution of sodium hydroxide dropwise to the solution obtained in step (S3) until the value displayed by the pH tester is 11, seal the reaction vessel, and raise the temperature to 55° C. and keep it for 2 hours to obtain a milky white suspension. The turbid liquid is methanol suspension of ZnO;

[0046](S5) Naturally cool the re...

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Abstract

The invention discloses a ZnO functional nano material and a preparation method thereof. The preparation method comprises the following steps of heating a methanol-water solution of zinc acetate to 50DEG C to form a homogeneous solution, dropwise adding the solution to a methanol solution of sodium hydroxide, enabling the pH in the obtained solution to be greater than or equal to 9 and less thanor equal to 11, raising the temperature to 55 DEG C in a sealed reaction container, reacting to obtain a methanol suspension of ZnO, and carrying out post-treatment to obtain zinc oxide nanocrystalline powder with strong ultraviolet light absorption, the grain size of the zinc oxide nanocrystalline powder being 10-12 nm. The method provided by the invention can be used for preparing the ZnO functional nano material with strong ultraviolet light absorption at near room temperature, and can be used for photocatalysis and nano bioengineering.

Description

technical field [0001] The invention relates to a ZnO functional nano material, in particular to a ZnO functional nano material and a preparation method thereof. Background technique [0002] Nano-zinc oxide (ZnO) is a high-function fine inorganic product that exhibits many special properties, such as non-migration, fluorescence, piezoelectricity, ability to absorb and scatter ultraviolet rays, etc., and can be used to manufacture gas sensors, phosphors, Varistors, image recording materials, piezoelectric materials, varistors, high-efficiency catalysts, etc. Because of its huge potential application value in the fields of photocatalysis, bioengineering and optoelectronic devices, many scientific research institutes and university teams at home and abroad are committed to the study of the controllable synthesis and optical properties of zinc oxide. [0003] At present, the preparation of nano zinc oxide mainly includes: solid-phase method, liquid-phase method and gas-phase m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G9/02B82Y30/00B01J23/06
CPCB01J23/06B01J35/004B82Y30/00C01G9/02C01P2002/72C01P2004/64
Inventor 石立春寇晨王育虔张晓娟陈明淑
Owner XIJING UNIV
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