Method for preparing different shaped nano zinc oxide by thermal decomposition

A nano-zinc oxide, thermal decomposition technology, applied in the direction of zinc oxide/zinc hydroxide, etc., to achieve the effects of good controllability, low cost and simple method

Inactive Publication Date: 2006-07-19
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the controllable preparation of ZnO nanomaterials with different morphologies is still a challenging problem.

Method used

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  • Method for preparing different shaped nano zinc oxide by thermal decomposition
  • Method for preparing different shaped nano zinc oxide by thermal decomposition

Examples

Experimental program
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Effect test

Embodiment 1

[0022] According to the preparation process, 5×10 -4 mol Zn(Ac) 2 2H 2 O was mixed with 5ml of absolute ethanol, and the reaction vessel was placed in a water bath with magnetic stirring and heated to 70°C. will be 1.5×10 -3 mol oleic acid was added to 10ml trioctylamine and mixed, and the mixed solution was heated to 80°C at a heating rate of 4°C / min. Then inject the ethanol solution of zinc acetate into the mixed solution of oleic acid and trioctylamine quickly through a medical syringe and heat it. After the ethanol in which the zinc acetate is dissolved is volatilized, the mixed solution is heated to 360°C under mechanical stirring and a heating rate of 3°C / min. The reaction was stopped after reflux at 360° C. for 30 min. Add 15ml of absolute ethanol to the reacted mixture, and precipitation can be observed. The mixture is centrifuged at a speed of 10000r / min for 45 minutes through a SORVALL LEGEND-T centrifuge, and the product is washed with 30ml of absolute ethanol a...

Embodiment 2

[0024] According to the preparation process, 5×10 -4 mol Zn(Ac) 2 2H 2 O was mixed with 6ml of absolute ethanol, and the reaction vessel was placed in a water bath with magnetic stirring and heated to 70°C. will be 1.5×10 -3 mol oleic acid was added to 12ml trioctylamine and mixed, and the mixed solution was heated to 90°C at a heating rate of 4°C / min. Then inject the ethanol solution of zinc acetate into the mixed solution of oleic acid and trioctylamine quickly through a medical syringe and heat it. After the ethanol in which the zinc acetate is dissolved is volatilized, the mixed solution is heated to 355°C under mechanical stirring and a heating rate of 2°C / min. The reaction was stopped after refluxing at 355° C. for 60 min. Add 18ml of absolute ethanol to the reacted mixture, and precipitation can be observed. The mixture is centrifuged at a speed of 10000r / min for 30 minutes through a SORVALL LEGEND-T centrifuge, and the product is washed with 35ml of absolute ethano...

Embodiment 3

[0026] According to the preparation process, 5×10 -4 mol Zn(Ac) 2 2H 2 O was added to 10ml of absolute ethanol and mixed, and the reaction vessel was placed in a water bath with magnetic stirring and heated to 70°C. will be 1.5×10 -3mol oleic acid was added to 8ml trioctylamine and mixed, and the mixed solution was heated to 100°C at a heating rate of 4°C / min. Then inject the ethanol solution of zinc acetate into the mixed solution of oleic acid and trioctylamine through a medical syringe and heat it. After the ethanol in which the zinc acetate is dissolved evaporates, the mixed solution is heated to 350°C under mechanical stirring and a heating rate of 2°C / min. The reaction was stopped after reflux at 350° C. for 180 min. Add 15ml of absolute ethanol to the reacted mixture, and it can be observed that there is precipitation. The mixture is centrifuged at a speed of 10000r / min for 30 minutes through a SORVALLLEGEND-T centrifuge, and the product is washed with 35ml of absol...

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Abstract

The invention discloses a method to prepare nano ZnO of different shape by thermal decomposition. Wherein, using zinc acetate as predecessor and oleic acid as surfactant, refluxing in tri-n-octylamine of high boiling point to obtain nano ZnO particles of different shape and even size and with surface packaged by oleic acid. According to experiment result, it finds a simple method to prepare nano ZnO particle of hexagon, diamond shape and triangle. This invention is simple and low cost, and has high use value in optical device design and manufacture.

Description

technical field [0001] The invention relates to the technical field of material preparation, in particular to a method for preparing nano zinc oxide with different shapes by thermal decomposition. Background technique [0002] Semiconductor nanocrystals have received widespread attention in recent years due to their potential applications in optoelectronic devices, photoluminescence, and biological images, and these applications all come from the quantum confinement effect of semiconductor nanocrystals, which improves the optoelectronic properties of semiconductor nanocrystals. size dependence. In the past two decades, semiconducting nanomaterials have played an important role in information technology, electronics, medicine, biotechnology, environment, energy and national security, but a challenging issue is whether they can be controlled Preparation of specific nanoparticles, for example, monodisperse and high-quality nanoparticles of specific shape. Many nanomaterials h...

Claims

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Application Information

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IPC IPC(8): C01G9/02
Inventor 蒋建中吴海平姚嫦娲牛璐刘金芳
Owner ZHEJIANG UNIV
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