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Method for preparing n-type doped zinc oxide nanometer powder

A zinc oxide nano-powder technology, applied in nano-structure manufacturing, nano-technology, nano-technology, etc., can solve the problems of long cycle, uneven doping components, complex preparation process, etc.

Inactive Publication Date: 2010-03-10
SHIJIAZHUANG RAILWAY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved in the present invention is to overcome the disadvantages of chemical co-precipitation method that the doping components are uneven and easy to agglomerate, the preparation process of hydrothermal method is relatively complicated, the cycle is long, and the safety requirements for equipment are high, and a kind of n A method for preparing type-doped zinc oxide nanopowder, the method has simple process flow and short cycle, and the prepared powder is evenly doped and has a small particle size

Method used

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  • Method for preparing n-type doped zinc oxide nanometer powder
  • Method for preparing n-type doped zinc oxide nanometer powder

Examples

Experimental program
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Effect test

Embodiment 1

[0018] ① Dissolve 7 parts by weight of acrylic acid in 3 parts by weight of deionized water, and fully dissolve under magnetic stirring to obtain solution A;

[0019] 2. Fix the weight ratio of zinc acetate and solution A to be 15:100, weigh gallium nitrate and zinc acetate in a molar ratio of 4:100, add them to the above solution A, and obtain homogeneous system B under magnetic stirring;

[0020] 3. The deionized aqueous solution of ammonium persulfate that is 2wt% by weight is slowly added to the homogeneous system B prepared in step 2. under magnetic stirring conditions to obtain solution C. The ammonium persulfate added and the acrylic acid in step 1. The weight ratio is 0.05:1;

[0021] ④Heat and stir the C solution obtained in step ③ at 100°C for 0.1h to make the system polymerized completely, then dry at 250°C for 2h to obtain a solid, cool it and grind it, then put it in a muffle furnace, in the air atmosphere, 600°C Calcined for 3 hours under the same conditions, th...

Embodiment 2

[0026] ① Dissolve 10 parts by weight of acrylic acid in 4 parts by weight of deionized water, and fully dissolve under magnetic stirring to obtain solution A;

[0027] 2. Fix the weight ratio of zinc nitrate and solution A to be 10:100, weigh gallium sulfate and zinc nitrate in a molar ratio of 1:100, add them to the above solution A, and obtain homogeneous system B under magnetic stirring;

[0028] 3. the deionized aqueous solution of 5 wt% ammonium persulfate is slowly added to the homogeneous system B prepared in step 2. under magnetic stirring conditions to obtain solution C, the ammonium persulfate added and the acrylic acid in step 1. The weight ratio is 0.02:1;

[0029] ④Heat the C solution obtained in step ③ at 60°C for 1h to make the system completely polymerized, then dry at 180°C for 10h to obtain a solid, cool it and grind it, then put it in a muffle furnace, and calcinate it in an air atmosphere at 500°C 5h, that is, the light yellow gallium-doped zinc oxide nano...

Embodiment 3

[0033] ① Dissolve 8 parts by weight of acrylic acid in 4 parts by weight of deionized water, fully dissolve under magnetic stirring, and obtain solution A;

[0034] 2. The weight ratio of zinc sulfate and solution A is fixed to be 5:100, and gallium chloride and zinc sulfate are weighed in a molar ratio of 6:100, added to the above solution A, and homogeneous system B is obtained under magnetic stirring;

[0035] 3. the deionized aqueous solution of 10wt% potassium persulfate is slowly added to the homogeneous system B prepared in step 2. under magnetic stirring conditions to obtain solution C, the added potassium persulfate and the acrylic acid in step 1. The weight ratio is 0.01:1;

[0036] ④Heat the C solution obtained in step ③ at 80°C for 0.5h to complete the polymerization of the system, then dry at 100°C for 24h to obtain a solid, cool it and grind it, then put it in a muffle furnace, under the condition of air atmosphere and 600°C, After calcining for 4 hours, light y...

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Abstract

The invention discloses a method for preparing n-type doped zinc oxide nanometer powder, belonging to the preparation of nanometer materials. A general formula of the n-type doped zinc oxide is ZnO: M, wherein M is selected from Ga, In and Al. The preparation method comprises the following steps: adding M-containing soluble salt and Zn-containing soluble salt to aqueous solution of acrylic acid according to a certain proportion; adding aqueous solution of peracetic initiators; heating at 60-100 DEG C to ensure the system to completely polymerized; drying, cooling, grinding, and calcining in amuffle; and treating the obtained product at high temperature in reducing atmosphere. The invention has simple technique and is suitable for large-scale preparation and industrial mass production. Theprepared powder has good dispersibility, uniform size in the range from 20 to 120 nm, homogeneous phase without impurity, lighter color and higher conductivity and is particularly applied to the fields of transparent heating insulating materials, light color antistatic materials and the like.

Description

technical field [0001] The invention relates to a preparation method of nanometer materials, in particular to a preparation method of n-type doped zinc oxide nanopowder, which can be used in the fields of transparent heat-insulating coatings, antistatic materials and the like. Background technique [0002] Transparent conductive oxides (TCO), because of their large carrier concentration and optical bandgap width, exhibit excellent optoelectronic properties, such as low resistivity and high visible light transmittance. As an important broadband semiconductor material, TCO has both optical transparency in the visible light range and good electrical conductivity. Therefore, TCO materials have become one of the basic materials in the modern optoelectronics industry, especially in liquid crystal displays, solar cells, and heat insulation. Glass, electrochromic, electromagnetic shielding, radar shielding protection, new lighting, energy-saving buildings and anti-static industries ...

Claims

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Application Information

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IPC IPC(8): B82B3/00
Inventor 李元庆康勇马望京张建民梅世刚吕臣敬张光磊
Owner SHIJIAZHUANG RAILWAY INST
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