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Preparation method for micrometer barium-doped zinc oxide

A technology of zinc oxide and barium chloride, applied in the direction of zinc oxide/zinc hydroxide, etc., can solve the problems of cumbersome process, poor repeatability, expensive equipment, etc., and achieve the effect of simple method, low cost and short production cycle

Inactive Publication Date: 2011-11-23
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the preparation process of micron zinc oxide materials, there are generally disadvantages such as cumbersome process, poor repeatability, and expensive equipment.

Method used

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  • Preparation method for micrometer barium-doped zinc oxide
  • Preparation method for micrometer barium-doped zinc oxide
  • Preparation method for micrometer barium-doped zinc oxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Add 0.0439g of zinc acetate dihydrate and 0.5678g of barium chloride dihydrate into 75g of distilled water, stir at room temperature for 30 minutes, add 0.12g of polyvinylpyrrolidone K-30, stir at room temperature for 30 minutes, add 3g of 5mol / L NaOH aqueous solution, poly The mass ratio of vinylpyrrolidone K-30 to zinc acetate dihydrate, barium chloride dihydrate, 5mol / L NaOH solution, and distilled water is 1:0.3658:4.732:25:625, stir at room temperature, and continue stirring after the solution becomes white turbid For 5 minutes, pour the white turbid liquid into a hydrothermal reaction kettle lined with polytetrafluoroethylene, seal the hydrothermal reaction kettle, put the hydrothermal reaction kettle in an oven at a temperature of 180°C for 24 hours, and centrifuge. The precipitate was alternately washed three times with distilled water and absolute ethanol, and vacuum-dried at 60°C for 24 hours to prepare a micron barium-doped zinc oxide material.

[0026] The r...

Embodiment 2

[0028] Add 0.0439g of zinc acetate dihydrate and 0.0122g of barium chloride dihydrate into 75g of distilled water, stir at room temperature for 30 minutes, add 0.12g of polyvinylpyrrolidone K-30, stir at room temperature for 30 minutes, add 3g of 5mol / L NaOH aqueous solution, poly The mass ratio of vinylpyrrolidone K-30 to zinc acetate dihydrate, barium chloride dihydrate, 5mol / L NaOH solution, and distilled water is 1: 0.3658: 0.1017: 25: 625, and the other steps are the same as in Example 1, and prepared into micron Barium doped zinc oxide material.

[0029] The resulting product is characterized by a Quanta 200 environmental scanning electron microscope, and the results are shown in figure 2 . Depend on figure 2 It can be seen that the obtained product is barium-doped zinc oxide in micron rod shape, the length of the rod is 0.5-3 μm, and the diameter is 0.2-0.5 μm.

Embodiment 3

[0031] Add 0.0439g of zinc acetate dihydrate and 2.443g of barium chloride dihydrate into 75g of distilled water, stir at room temperature for 30 minutes, add 0.12g of polyvinylpyrrolidone K-30, stir at room temperature for 30 minutes, add 3g of 5mol / L NaOH aqueous solution, poly The mass ratio of vinylpyrrolidone K-30 to zinc acetate dihydrate, barium chloride dihydrate, 5mol / L NaOH solution, and distilled water is 1: 0.3658: 20.36: 25: 625, and the other steps are the same as in Example 1 to prepare micron Barium doped zinc oxide material.

[0032] The resulting product is characterized by a Quanta 200 environmental scanning electron microscope, and the results are shown in image 3 . Depend on image 3 It can be seen that the obtained product is barium-doped zinc oxide in micron rod shape, the length of the rod is 20-50 μm, and the diameter is 5-10 μm.

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Abstract

Provided is a preparation method for micrometer barium-doped zinc oxide. According to the method, barium-doped zinc oxide materials with three micrometer structures, namely, a clavate, a flower-like and a hexaprismatic double layer structure, are prepared with polyvinylpyrrolidoneK-30 as a template, zinc acetate dihydrate as a zinc source and barium chloride dihydrate as a structural modificationagent and doping agent by controlling the concentration of reactants, hydro-thermal growth time and reaction temperature. The micrometer barium-doped zinc oxide material prepared in the invention hasthe characteristics of high purity, a standardized crystal structure, good controllability in morphology and a short production period, and has a significant application prospect in fields like fuel cells, photoelectric conversion materials and chemical sensors.

Description

technical field [0001] The invention belongs to the technical field of semiconductor micron materials, and in particular relates to a preparation method of a micron barium-doped zinc oxide material. Background technique [0002] Due to its high chemical stability and good biocompatibility, zinc oxide has a large band gap (Eg=3.37eV) and high electron excitation binding energy (60meV) at room temperature, making it It has unique catalytic, electrical, photoelectric, and photochemical properties, and has received great attention. It has applications in solar cells, surface acoustic wave and piezoelectric materials, field emission, nano-laser, ultraviolet detectors, optical switches, micro-nano power supplies, etc. These fields have broad application prospects. In recent years, the research on the preparation, assembly and application of ZnO micro-nano structural units has been extremely active, especially since Professor Wang Zhonglin’s research group first used the piezoelec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G9/02
Inventor 高子伟侯鲲答敏李子美
Owner SHAANXI NORMAL UNIV
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