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Method of growing nano-tube shaped zinc oxide by hydrothermal decomposition

A nanotube and zinc oxide technology, applied in the field of hydrothermal decomposition and growth of nanotube-type zinc oxide, can solve the problems of high reaction temperature, complex equipment, low efficiency, etc., achieve good repeatability, reduce chemical reagents, and improve sample purity Effect

Inactive Publication Date: 2006-03-29
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the present invention, there are shortcomings such as high reaction temperature, complicated equipment, high cost and low efficiency in these methods reported at present

Method used

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  • Method of growing nano-tube shaped zinc oxide by hydrothermal decomposition
  • Method of growing nano-tube shaped zinc oxide by hydrothermal decomposition
  • Method of growing nano-tube shaped zinc oxide by hydrothermal decomposition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A method for hydrothermally decomposing and growing nanotube-type zinc oxide:

[0022] The first step: add concentrated ammonia water with a mass percentage concentration of 25% dropwise into a zinc chloride solution with a concentration of 0.06-0.15M and fully stir to adjust the pH of the solution to 9-11, and then seal the solution. This embodiment can Choose to add concentrated ammonia water dropwise to 0.08, 0.10, 0.12 or 0.15M zinc chloride solution, and adjust the pH value of the solution to 9, 9.5, 9.7, 10.1 or 11;

[0023] Step 2: ultrasonically treat the closed solution for 25 to 35 minutes. In this embodiment, the time for ultrasonic treatment is 25, 28, 32 or 35 minutes;

[0024] Step 3: Put the cleaned conductive substrate into the above solution and seal the solution again, then put the sealed solution in an environment of 80-98°C and let it stand for 45-90 minutes. In this embodiment, Put the closed solution in an environment of 90, 95 or 98°C and let it ...

Embodiment 2

[0027] 1. First scrub the stainless steel sheet with acetone, then ultrasonically clean it with acetone and deionized water for 15 minutes each;

[0028] 2. 3ml of concentrated ammonia water with a mass ratio of 25% is added dropwise to 40ml of a 0.10M zinc chloride solution and fully stirred; the solution is placed in a glass bottle with a screw cap.

[0029] 2. Treatment of film growth solution: Seal the above solution and treat it with ultrasonic for 35 minutes;

[0030] 4. Put the cleaned substrate into the solution and seal the solution again. Immediately thereafter, the closed container was placed in an oven at 95° C. for 60 minutes. Then lower the temperature of the oven, keep the substrate for 6 hours, take out the substrate, rinse it with deionized water and dry it naturally to obtain zinc oxide nanotubes with uniform and dense arrangement.

[0031] image 3 The XRD pattern shows that the obtained sample is zinc oxide crystals without other impurities.

[0032] f...

Embodiment 3

[0034] 1. Selection and treatment of the substrate: first scrub the wide-strip tinned silicon substrate with acetone, then ultrasonically clean it with acetone and deionized water for 15 minutes each;

[0035] 2. Preparation of film growth solution: 3ml of concentrated ammonia water with a mass ratio of 25% was added dropwise to 50ml of a 0.12M zinc chloride solution and fully stirred; the solution was placed in a glass bottle with a screw cap.

[0036] 3. Treatment of thin film growth solution: seal the above solution and use ultrasonic treatment for 30 minutes;

[0037] 4. Place the cleaned substrate horizontally into the solution and seal the solution again. Immediately thereafter, the closed container was placed in an oven at 95° C. for 50 minutes. Then lower the temperature of the oven, keep the substrate for 6 hours, take out the substrate, rinse with deionized water and dry naturally to obtain zinc oxide nanotubes with uniform and dense arrangement.

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Abstract

A process for preparing zinc oxide nanotubes by hydrothermal decomposing and growth includes such steps as dripping concentrated ammonia water in the solution of zinc chloride while stirring, regulating pH=9-11, sealing, ultrasonic treating, putting a clean and electrically conductive substrate in the solution, sealing again, laying a side at 80-98 deg.C, natural cooling, ageing, taking the substrate, flushing with deionized water, and natural drying to obtain the zinc oxide nanotubes on the surface of substrate.

Description

technical field [0001] The invention relates to a preparation method of zinc oxide, in particular to a method for hydrothermally decomposing and growing nanotube type zinc oxide. Background technique [0002] The structure and morphology of nanomaterials have a great influence on the properties and applications of nanomaterials. The preparation of nanocrystalline materials with specific structure and morphology is of great significance for the development of new fields of nanomaterial properties. [0003] Among numerous nanomaterials, the nanostructure of ZnO has attracted general interest. ZnO is a wide bandgap semiconductor with an exciton binding energy of 60meV and a direct bandgap width of 3.37eV. The nano-zinc oxide with tubular structure has attracted much attention due to its high porosity, large surface area and good optical, electrical and magnetic properties. It is expected to be used in biosensors, gas sensors, hydrogen storage devices, metal-ion batteries, El...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G9/02
Inventor 孙小卫魏昂徐春祥董志力王保平
Owner SOUTHEAST UNIV
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