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Preparation method of nano zinc oxide transparent ethanol solution

A technology of nano-zinc oxide and transparent alcohol, which is applied in the field of preparation of nano-zinc oxide transparent alcohol solution, and can solve the problems of complex preparation route, high synthesis cost, and poor stability of ultra-fine nano-zinc oxide particles

Inactive Publication Date: 2017-03-08
GUANGXI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these synthetic methods often encounter the following problems: poor stability of ultrafine nano-zinc oxide particles, complicated preparation routes, high synthesis cost, etc.
The nano-ZnO prepared by this method has a large particle size (about 30nm), and the nano-ZnO is insoluble in alcohol, that is, the ethanol dispersibility of the nano-ZnO is poor.
At present, there is no relevant literature report on the preparation method of nano-zinc oxide with high ethanol dispersibility and good fluorescence performance.

Method used

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  • Preparation method of nano zinc oxide transparent ethanol solution
  • Preparation method of nano zinc oxide transparent ethanol solution
  • Preparation method of nano zinc oxide transparent ethanol solution

Examples

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Effect test

Embodiment 1

[0023] Dissolve 10.0 mmol of sodium hydroxide in 100.0 mL of ethanol (equivalent to 1.7 mol of ethanol), and stir at 50°C for 20 minutes to prepare a sodium hydroxide solution. At the same time, 10.0 mmol Zn(AC) 2 2H 2 O was dissolved in 100.0 mL of ethanol, stirred at 65°C for 20 minutes, then cooled to 50°C, added 5.0 mL of PEG-200, stirred at 50°C for 10 minutes to prepare a zinc acetate solution. Finally, 100.0 mL of sodium hydroxide solution was quickly added to 101.0 mL of zinc acetate solution, and the stirring reaction was continued at 50° C. for 20 to 800 minutes to obtain a transparent nanometer zinc oxide ethanol solution.

[0024] The nano-zinc oxide ethanol solutions obtained at different reaction times were stored at 4°C. In order to obtain PEG-modified zinc oxide nanoparticles, 200 mL of distilled water was added to the nano-zinc oxide ethanol solution prepared by the reaction, and then centrifuged at 4000 rpm for 5 minutes, the supernatant was poured out, and...

Embodiment 2

[0026]Dissolve 10.0 mmol of sodium hydroxide in 100.0 mL of ethanol and stir at 50°C for 20 minutes to prepare a sodium hydroxide solution. At the same time, dissolve 10.0 mmol zinc acetate in 100.0 mL ethanol, stir at 65°C for 20 minutes, then cool to 50°C, add 1.0mL PEG-200, stir at 50°C for 10 minutes to make a zinc acetate solution. Finally, 100.0 mL of sodium hydroxide solution was quickly added to 101.0 mL of zinc acetate solution, and the stirring reaction was continued at 50°C for 20 minutes to obtain a transparent nano-zinc oxide ethanol solution, which could remain clear and transparent for more than 6 months.

Embodiment 3

[0028] Dissolve 10.0 mmol of sodium hydroxide in 100.0 mL of ethanol and stir at 50°C for 20 minutes to prepare a sodium hydroxide solution. At the same time, dissolve 10.0 mmol zinc acetate in 100.0 mL ethanol, stir at 65°C for 20 minutes, then cool to 50°C, add 3.0mL PEG-200, stir at 50°C for 10 minutes to make a zinc acetate solution. Finally, 100.0 mL of sodium hydroxide solution was quickly added to 101.0 mL of zinc acetate solution, and the stirring reaction was continued at 50°C for 40 minutes to obtain a transparent nano-zinc oxide ethanol solution, which could remain clear and transparent for more than 6 months.

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Abstract

The invention relates to a preparation method of a nano zinc oxide transparent alcohol solution. The method comprises the steps of: (1) adding sodium hydroxide into ethanol, evenly mixing and well stirring the two to obtain sodium hydroxide solution, (2) adding zinc salt into ethanol, evenly mixing and well stirring the two, adding polyethylene glycol and stirring the mixture to obtain zinc salt solution, (3) adding the sodium hydroxide solution rapidly into the zinc salt solution, and stirring and reacting the mixture at 48-52 DEG C for 20-800 min to obtain the nano zinc oxide ethanol solution. The present invention has the following advantages: (1) the controllable scale preparation of ultrafine Zno@PEG particles is realized, the ethanol solution is stable and maintains clear and transparent for more than 6 months, and no agglomeration phenomenon of particles appears, and (2) the nano zinc oxide ethanol solution has relatively stable fluorescence properties, which can still retain 91.0% fluorescence intensity after 6 days, and the nano particle ethanol solution diluted with water also has certain stability.

Description

technical field [0001] The invention relates to a method for preparing a nano zinc oxide transparent alcohol solution, belonging to the field of inorganic non-metallic materials. Background technique [0002] In the past few years, ZnO nanoparticles have been extensively studied, especially in the fields of transparent conductors, photoelectric conversion, industrial catalysis, and biomedicine. Compared with Cd-based and Pb-based fluorescent quantum dots, zinc oxide has the characteristics of non-toxicity and biocompatibility, and is especially suitable for application in the field of biomedicine. When the particle size of solid particles is smaller than a certain characteristic length scale (such as exciton diameter or electron mean free path), its physicochemical properties are obviously different from those of intrinsic bulk materials, especially ZnO nanocrystals. Compared with titanium dioxide nanoparticles, nano-zinc oxide is easier to realize the quantum confinement e...

Claims

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Application Information

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IPC IPC(8): C01G9/02B82Y30/00B82Y40/00
CPCC01G9/02B82Y30/00B82Y40/00C01P2002/72C01P2002/82C01P2002/88C01P2004/04C01P2004/64
Inventor 黄文艺李利军程昊刘新梅白大伟孔红星
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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