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Method for hydrothermally synthesizing series flower shape zinc oxide micron/nano structure

A flower-shaped zinc oxide, nano-structured technology, applied in chemical instruments and methods, cleaning methods using liquids, cleaning methods and utensils, etc., can solve the problems of high cost of molecular beam epitaxy, high temperature requirements, poor controllability, etc. The effect of low, simple method and huge application prospect

Inactive Publication Date: 2007-04-11
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The cost of molecular beam epitaxy is too high to meet the requirements of large-scale production; chemical vapor deposition is a relatively good method, but it needs to be improved in the controllability of nanostructures; thermal evaporation is easy to operate and capable of The advantages of preparing a variety of morphologies have become one of the main methods for preparing ZnO nanostructures, but its disadvantages are: high temperature requirements and poor controllability
Each of these synthetic methods has advantages and disadvantages

Method used

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  • Method for hydrothermally synthesizing series flower shape zinc oxide micron/nano structure
  • Method for hydrothermally synthesizing series flower shape zinc oxide micron/nano structure
  • Method for hydrothermally synthesizing series flower shape zinc oxide micron/nano structure

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Experimental program
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Effect test

Embodiment 1

[0018] 1) Drop ammonia water with a mass percentage of 25% into a zinc chloride solution with a concentration of 0.35 mol / l, and adjust the pH values ​​of the solutions to 10.40, 10.80 and 11.15, respectively.

[0019] 2) To clean the substrate, place the copper sheet in a beaker of a mixture of acetone and deionized water or ethanol solution, ultrasonicate for 5 minutes to 1.5 hours, and put it flat into a reaction vessel with a plug.

[0020] 3) Place the prepared solution in a glass vessel with a plug, cover the glass vessel (it is not absolutely sealed, so the air pressure of the solution is almost close to normal pressure), then put it into a drying oven with a temperature of 95 ° C and heat it for 5.5 h, remove the glassware.

[0021] 4) Pour out the reacted transparent liquid and leave a white precipitate, then seal the glassware well, store it at room temperature for 4 hours, take out the sample, wash it with deionized water and dry it naturally. A white thin film was...

Embodiment 2

[0024] 1) Drop ammonia water with a mass percentage of 25% into zinc chloride solutions with concentrations of 0.2, 0.35 and 0.45 mol / l respectively, and adjust the pH value of the solution to about 10.60.

[0025] 2) To clean the substrate, place the copper sheet in a beaker of a mixture of acetone and deionized water or ethanol solution, ultrasonicate for 5 minutes to 1.5 hours, and put it flat into a reaction vessel with a plug.

[0026] 3) Put the prepared solution in a glass vessel with a plug, cover the glass vessel (it is not absolutely sealed, so the air pressure of the solution is almost close to normal pressure), then put it into a drying oven with a temperature of 95°C and heat it for 5.5h , remove the glassware.

[0027] 4) Pour out the reacted transparent liquid and leave a white precipitate, then seal the glassware well, store it at room temperature for 4 hours, take out the sample, wash it with deionized water and dry it naturally. A white thin film was deposit...

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Abstract

The present invention discloses hydrothermal process of synthesizing efflorescent zinc oxide in micron and nanometer structure. The process includes adopting zinc chloride and ammonia water as material, regulating solution pH value to 10.40-12.00, setting the treated substrate and the compounded solution inside reaction utensil with cover, heating in a stove to react, eliminating transparent liquid while leaving white precipitate, sealing the precipitate in the utensil at room temperature for hours, washing and air drying to obtain the efflorescent zinc oxide in micron and nanometer structure on the substrate. The prepared efflorescent zinc oxide is used mainly in making chemical sensor, optical memory, photocatalyst, etc. and the process is simple, low in cost, controllable, pollution-free and suitable for industrial production.

Description

technical field [0001] The invention belongs to the field of semiconductor nanomaterial preparation, in particular to a method for preparing micron / nano zinc oxide, in particular to a method for preparing a series of flower-like ZnO micron / nano structures by using a hydrothermal synthesis method. Background technique [0002] As a wide bandgap semiconductor compound (with a bandgap of 3.37eV and room temperature excitonic energy of 60meV), ZnO has unique optical, electrical, photoelectric and piezoelectric properties, and has been widely used in optoelectronic devices, solar cell optical waveguides, power Devices, sensors, flat panel displays, and optical storage devices. So far, different chemical, physical, and electrochemical preparation methods mainly include molecular beam epitaxy, metal-organic chemical vapor deposition, laser deposition, sputtering, thermal evaporation, and hydrothermal synthesis. The cost of molecular beam epitaxy is too high to meet the requirement...

Claims

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Application Information

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IPC IPC(8): C23C18/12C23C18/04B08B3/12
Inventor 朱自强郁可白伟张秋香王翠翠朱霞
Owner EAST CHINA NORMAL UNIV
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