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Saturated Precursor Dilution Method for Preparation of Zinc Oxide with Micro-nano Composite Morphology

A zinc oxide and composite technology, applied in the direction of zinc oxide/zinc hydroxide, nanotechnology, nanotechnology, etc., can solve the problems of low production and difficult industrialization promotion

Active Publication Date: 2016-06-29
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All these preparation methods have one thing in common: that is to use chemical reagents to synthesize zinc oxide nanoclusters. The advantage is that it is easy to manipulate. The disadvantage is that most of these synthesis methods are low-yield (only suitable for laboratory research), and it is difficult to do industrialization. to promote

Method used

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  • Saturated Precursor Dilution Method for Preparation of Zinc Oxide with Micro-nano Composite Morphology

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Experimental program
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Embodiment 1

[0042] Method of the present invention can be summarized as follows:

[0043]Firstly, zinc oxide has a dual nature of acid and alkali, and metazincate is easily hydrolyzed in water environment to synthesize a yucca-like zinc oxide cluster powder. The method used is called saturated precursor solution dilution method. Then zinc oxide is quantitatively mixed with the paint, and the adhesiveness of the paint is used to prepare a relatively firm and dense film. Combined with the roughened configuration of ZnO, combined with simple and rapid surface fatty acid modification, a superhydrophobic interface is constructed.

[0044] 5.1 Controllable preparation of ZnO nanoclusters

[0045] 5.1.1

[0046] First, prepare a saturated solution of strong alkali, prepare a certain volume (or higher) of nearly saturated aqueous sodium hydroxide solution (3-30mol / L) in a plastic beaker, stir evenly to form a clear solution, and keep stirring. Then, a certain amount of commercial zinc oxide po...

Embodiment 2

[0059] Low temperature controllable preparation of ZnO structure

[0060] According to the technical content 5.1.1 of Example 1, a saturated precursor solution was prepared, the concentration of sodium hydroxide was 15 mol / L, and the mass ratio of zinc oxide to sodium hydroxide was 1:10.

[0061] According to technical content 5.1.2, the dilution factor is 5 times during the water bath reaction, the reaction temperature is 45°C, and the reaction time is 1 hr.

[0062] According to technical content 5.1.3, after the reaction is completed, the white turbid reaction solution is cooled rapidly, washed several times with deionized water and absolute ethanol, and then dried in an oven at a drying temperature of 80°C. Collect the synthesized zinc oxide powder.

[0063] Experimental results: if figure 2 As shown in (right), when heated and stirred for 1 hr, the product is a single cluster structure, which is composed of needle-like nanorods, similar to the plant yucca in nature. A...

Embodiment 3

[0065] High-temperature controllable preparation of ZnO structures

[0066] According to the technical content 5.1.1 of Example 1, a saturated precursor solution was prepared, the concentration of sodium hydroxide was 15 mol / L, and the mass ratio of zinc oxide to sodium hydroxide was 1:10.

[0067] According to technical content 5.1.2, the dilution factor is 7 times, the reaction temperature is 75°C, and the reaction time is 5 minutes and 45 minutes respectively.

[0068] According to technical content 5.1.3, after the reaction is completed, the white turbid reaction solution is cooled rapidly, washed several times with deionized water and absolute ethanol, and then dried in an oven at a drying temperature of 80°C. Collect the synthesized zinc oxide powder.

[0069] Experimental results: if Figure 4 (Left), after 5 minutes of reaction, the cluster structure has basically been formed, but some smaller needle-tip nanorod structures are still growing. After 45 minutes of reac...

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Abstract

The invention discloses a saturated precursor solution dilution method for preparing zinc oxide with micro-nano composite morphology, using commercial zinc oxide and sodium hydroxide as raw materials, utilizing the acid-base amphotericity of zinc oxide, and the metazincate radical in water The feature of easy hydrolysis in the environment is to synthesize a yucca-like zinc oxide cluster powder, and then quantitatively mix the zinc oxide with the paint, and use the adhesiveness of the paint to prepare a relatively firm and dense film, and obtain a super-fine film through surface modification. Hydrophobic. The present invention researches and expands its application field by preparing and regulating the microstructure of zinc oxide. Therefore, it can prepare nano zinc oxide on a large scale in a directional manner, which can greatly improve its application prospect. The method of the invention uses commercial zinc oxide and sodium hydroxide as raw materials, is simple and easy to implement, has low cost of raw materials, can be easily applied to the field of production and life, and has good industrialization prospects.

Description

technical field [0001] The invention belongs to the field of nano functional material methods, specifically, on the basis of commercially purchased random zinc oxide nano powders, through two-step chemical reactions, rapidly and massively prepare composite micro-nano-scale materials with specific micro-morphology Zinc oxide powder method. Background technique [0002] Zinc oxide is a very important semiconductor. The application of zinc oxide can be found in all aspects of production and life, such as rubber catalyst, coating modifier, skin care product additive, etc. As a direct wide bandgap semiconductor material, zinc oxide has good optical and electrical properties, and its application involves many aspects, such as the window layer of semiconductor photovoltaic devices, field emission devices, gas sensors, ultraviolet detectors, piezoelectric devices ,etc. In addition, zinc oxide also has a good photocatalytic effect, which can effectively degrade organic pollutants. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/23B05D7/14C01G9/02B82Y30/00B82Y40/00
Inventor 王会杰许小亮刘艳松吴以治邵伟佳郁菁
Owner UNIV OF SCI & TECH OF CHINA
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