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Method for preparing uniform zinc oxide nano tube in water solution

A zinc oxide nanotube and aqueous solution technology, applied in the direction of zinc oxide/zinc hydroxide, etc., can solve the problems affecting the growth of nanorods, the inability of nanotubes to maintain uniformity and integrity, and the reduction of the yield of zinc oxide nanotubes, etc., to achieve Guarantees uniformity and integrity, ease of handling, and inhibits the effect of dissolution

Inactive Publication Date: 2010-10-27
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the main problem in the large-scale preparation of ZnO nanotube arrays by the hydrothermal method is that the ZnO nanotubes grown on the substrate evolve from nanorods, and the initial coating conditions directly affect the growth of nanorods. If the growth conditions If it is not ideal, the nanotubes will not maintain uniformity and integrity
In addition, the ratio of the dissolution rate of ZnO polar surface and nonpolar surface should be controlled by changing the experimental conditions. Too fast dissolution of the nonpolar surface will seriously reduce the yield of ZnO nanotubes

Method used

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  • Method for preparing uniform zinc oxide nano tube in water solution
  • Method for preparing uniform zinc oxide nano tube in water solution
  • Method for preparing uniform zinc oxide nano tube in water solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Substrate preparation process

[0021] 1. Use a rubber dropper to draw zinc nitrate solution with a concentration of 0.6mol / L and a volume of 5mL and hexamethylenetetramine solution with a concentration of 0.6mol / L and a volume of 5mL to drop on the conductive glass, and let it stand for 10 minutes.

[0022] 2. Place the substrate with the mixed solution on the glue-spinning machine and then spin the glue at a speed of about 3000r / min for about 30s. After the glue-spinning process, a uniform film can be prepared on the conductive glass substrate.

[0023] 3. Place the substrate with the film in the muffle furnace for annealing. The annealing temperature is 300°C, the annealing time is 5min each time, and the annealing times are 3 times. The adhesive film can be decomposed into a zinc oxide seed film.

[0024] Preparation process of ZnO nanotube arrays

[0025] 1. Mix a 0.2mol / L zinc nitrate solution with a volume of 15mL and a 0.2mol / L hexamethylenetetraammonium solu...

Embodiment 2

[0029] Substrate preparation process

[0030] 1. Use a rubber-tip dropper to draw zinc nitrate solution with a concentration of 0.8mol / L and a volume of 5mL and hexamethylenetetramine solution with a concentration of 0.8mol / L and a volume of 5mL to drop on the conductive glass, and let it stand for 10 minutes.

[0031] 2. Place the substrate with the mixed solution on the glue-spinning machine and then spin the glue at a speed of about 3000r / min for about 60s. After the glue-spinning process, a uniform film can be prepared on the conductive glass substrate.

[0032] 3. Place the substrate with the film in the muffle furnace for annealing. The annealing temperature is 400°C, the annealing time is 7min each time, and the annealing times are 3 times. The adhesive film can be decomposed into a zinc oxide seed film.

[0033] Preparation process of ZnO nanotube arrays

[0034] 1. Mix a 0.6mol / L zinc nitrate solution with a volume of 15mL and a 0.6mol / L hexamethylenetetraammonium ...

Embodiment 3

[0038] Substrate preparation process

[0039] 1. Use a rubber dropper to draw zinc nitrate solution with a concentration of 1.0mol / L and a volume of 5mL and hexamethylenetetramine solution with a concentration of 1.0mol / L and a volume of 5mL to drop on the conductive glass, and let it stand for 10 minutes.

[0040] 2. Place the substrate with the mixed solution on the glue-spinning machine and then spin the glue at a speed of about 3000r / min for about 30s. After the glue-spinning process, a uniform film can be prepared on the conductive glass substrate.

[0041] 3. Place the substrate with the film in the muffle furnace for annealing. The annealing temperature is 300°C, the annealing time is 5min each time, and the annealing times are 2 times. The adhesive film can be decomposed into a zinc oxide seed film.

[0042] Preparation process of ZnO nanotube arrays

[0043] 1. Mix the zinc nitrate solution with the concentration of 0.8mol / L and the volume of 15mL and the hexamethy...

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Abstract

The invention discloses a method for preparing a uniform zinc oxide nanotube array in an aqueous solution, which belongs to the field of preparation of nanophase materials. The method comprises the following steps in turn: firstly, analytical pure zinc nitrate (Zn(NO3)2) and formamine ((CH3)6N4) are dissolved into distilled water respectively and stirred to obtain a stable and transparent solution; secondly, the zinc nitrate and the formamine solution with equal concentration and volume are taken respectively, mixed, stirred and poured into a hydrothermal reaction kettle; and thirdly, the prepared substrate is immersed into the mixture, sealed and placed into an oven for hydrothermal reaction for 3 to 4 days, so as to obtain the uniform zinc oxide nanotube array. The method utilizes the instable property of the polar surface of zinc oxide to be prepared into the uniform zinc oxide nanotube array under the low-temperature hydrothermal condition, effectively improves the quality of a zinc oxide nanotube, simplifies the technology, reduces consumption, can meet the requirement of mass production, and has wide application prospect in the fields of electron, catalyst and so on.

Description

technical field [0001] The invention belongs to the field of nano material preparation, in particular to the synthesis of zinc oxide nano material in aqueous solution. Background technique [0002] Zinc oxide is a direct bandgap II-VI semiconductor material, its room temperature bandgap can reach 3.37eV, and the exciton binding energy is as high as 60meV, which is one of the important foundations for zinc oxide as an excellent photoelectric emission device material. The lasing phenomenon reported in ZnO nanotube arrays has attracted much attention in recent years. The unique one-dimensional tubular structure is obviously superior to other one-dimensional zinc oxide materials in the field of photoelectricity and catalysis. The increased specific surface area enables optimized functions of catalysts, hydrogen storage materials, and optically sensitive materials. The preparation methods of zinc oxide nanotube arrays mainly include thermal evaporation method, electrochemical d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G9/02
Inventor 郭敏郭潇张梅王习东
Owner UNIV OF SCI & TECH BEIJING