Batch synthesis method of hollow nanometer/micrometer zinc oxide ball

A zinc oxide nanometer and synthesis method technology, applied in the direction of zinc oxide/zinc hydroxide, etc., to achieve the effect of improving room temperature luminescence performance and easy synthesis process

Inactive Publication Date: 2006-07-19
DALIAN UNIV OF TECH
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  • Claims
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Problems solved by technology

[0006] In the technical field of synthesis of nano / micro hollow spheres, there is no report on a large number of hollow spheres synthesized by one-step method

Method used

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  • Batch synthesis method of hollow nanometer/micrometer zinc oxide ball
  • Batch synthesis method of hollow nanometer/micrometer zinc oxide ball
  • Batch synthesis method of hollow nanometer/micrometer zinc oxide ball

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The diameter of the reactor was 20 mm, and the length of the electric furnace was 200 mm. The flow rate of argon (99.9%) is 115sccm, and the flow rate of oxygen (99.9%) is 0.1sccm. The graphite material is used as the container and deposition substrate of the zinc powder. The particle size of the zinc powder is less than 25μm (pure zinc content> 99.2%), and the thickness of the zinc powder is placed About 1.5mm. The reaction temperature was 680°C, and the reaction time was 20 minutes. Batch preparation of pure hollow spherical and hemispherical zinc oxide, the product morphology is as follows figure 1 shown.

Embodiment 2

[0031] The diameter of the reactor was 20 mm, and the length of the electric furnace was 200 mm. The flow rate of argon (99.9%) is 80sccm, and the flow rate of oxygen (99.9%) is 8sccm. The graphite material is used as the container and deposition substrate of the zinc powder. The particle size of the zinc powder is less than 25μm (pure zinc content> 99.2%). 3mm; the reaction temperature is 600°C, and the reaction time is 40min. The sea urchin-shaped zinc oxide hollow sphere material is prepared in batches, and the material is an assembly of zinc oxide nanowires and hollow spheres. The shape of the product is as follows figure 2 shown.

Embodiment 3

[0033]The diameter of the reactor was 20 mm, and the length of the electric furnace was 200 mm. The flow rate of argon gas (99.9%) was 20 sccm, and the zinc oxide powder (99.9%) and the graphite powder (99.9%) were mixed and ground in 1:1 as the raw material. The raw materials were put into the reactor, then rapidly heated to 950°C, and the tin-plated iron sheet was used as the substrate to collect the zinc oxide product in the temperature range of 300-700°C; the reaction time was 60 minutes. The sea urchin-shaped zinc oxide hollow sphere material is prepared in batches, and the material is an assembly of zinc oxide nanobelts and hollow spheres. The shape of the product is as follows image 3 shown.

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Abstract

The invention relates to the lot synthesis method for nano/micron ZnO hollow ball. Wherein, with Zn powder or ZnO powder as material, using simple chemical gas phase deposition to synthesize directly the product; adjusting the evaporating temperature of material, product deposition temperature or adding catalyst to realize original assembly synthesis. The product has well physical chemical performance and wide application in electronic device or other fields.

Description

technical field [0001] The invention belongs to the technical field of the intersection of nanometer materials and inorganic synthesis chemistry, and relates to a batch synthesis method of zinc oxide nano / micron hollow spheres for synthesizing nanometer or micron zinc oxide functional materials by vapor deposition method. Background technique [0002] Since Frank Cruso ([Science, 282, 1111, 1998]) developed the soft template method to synthesize silica hollow spheres in 1998, the hollow sphere synthesis technology has developed rapidly. [0003] As a special nano or micro material, hollow sphere material has huge potential application prospects in many fields. One of its main functions is to control the diffusion and transfer of other materials as an encapsulation material. Specifically, these nano / micro materials can be used for color retention of coatings and pigments, controlled drug release in biomedicine, as catalysts for waste treatment, and as packaging materials for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G9/02C01G9/03
Inventor 邱介山孙天军赵宗彬
Owner DALIAN UNIV OF TECH
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