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Preparation method of ATO (Antimony doped Tin Oxide) nanopowder

A powder and nano technology, applied in the field of preparing nano-ATO powder, can solve the problems of large ATO powder, poor powder conductivity, high application cost, etc., and achieve the effect of low production cost, improved conductivity, and small investment

Active Publication Date: 2015-05-20
烟台同立高科新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The above-mentioned methods all have shortcomings: the secondary particle size of the ATO powder prepared by the chemical precipitation method is relatively large, and the particle agglomeration is serious. To use it, it is necessary to add a dispersant, and after a long period of grinding, the agglomerated particles will be opened. Time-consuming, high energy consumption, high application cost
The hydrothermal method can directly form a slurry in the state of nano-ATO particles, but it must go through multiple processes to remove impurity ions, such as water washing, alcohol washing and ultrafiltration membrane system washing, etc. There are many processes, time-consuming and complicated processes
Moreover, the formed powder has poor conductivity (the powder resistance is between 4-20 ohms), and the application cost is also high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: a kind of preparation method of nanometer ATO powder, it comprises the steps:

[0021] (1) Preparation of the mixture solution: take 800ml of industrial ethanol, add 2.8g of citric acid and stir to dissolve, and prepare a complexing agent ethanol solution; take 200ml of hydrochloric acid (the volume ratio of concentrated hydrochloric acid to water is 1:1) solution, add 22g of three Stir and dissolve antimony chloride, add 250g tin tetrachloride and stir evenly under continuous stirring, and prepare the hydrochloric acid solution of tin tetrachloride and antimony trichloride; The hydrochloric acid solution of antimony is fully mixed to make a mixed solution of tin and antimony;

[0022] (2) Preparation of the seed crystal suspension: add 2000ml of deionized water to the reactor, measure 50ml of tin tetrachloride hydrochloric acid solution with a mass concentration of 20%, add it, heat up to 50°C, and stir under uniform mechanical stirring , add ammonia sol...

Embodiment 2

[0027] Embodiment 2: a kind of preparation method of nanometer ATO powder, it comprises the steps:

[0028] (1) Preparation of the mixture solution: take 800ml of industrial ethanol, add 4.3g of tartaric acid and stir to dissolve, and prepare a complexing agent ethanol solution; take 200ml of hydrochloric acid (the volume ratio of concentrated hydrochloric acid to water is 1:1) solution, add 25g of trichloro Stir and dissolve antimony, add 250g of tin tetrachloride and stir evenly under continuous stirring, and prepare the hydrochloric acid solution of tin tetrachloride and antimony trichloride; Hydrochloric acid solution is fully mixed to make tin-antimony mixed solution;

[0029] (2) Preparation of the seed crystal suspension: add 2000ml of deionized water to the reactor, measure 50ml of tin tetrachloride hydrochloric acid solution with a mass concentration of 30%, add it, heat up to 40°C, and stir under uniform mechanical stirring , add ammonia solution dropwise (the volum...

Embodiment 3

[0034] Embodiment 3: a kind of preparation method of nanometer ATO powder, it comprises the steps:

[0035] (1) Preparation of the mixture solution: take 800ml of industrial ethanol, add 2.2g of malic acid and stir to dissolve, and prepare a complexing agent ethanol solution; take 200ml of hydrochloric acid (the volume ratio of concentrated hydrochloric acid to water is 1:2) solution, add 23.2g Stir antimony trichloride to dissolve, then add 250g tin tetrachloride and stir evenly under continuous stirring, and prepare the hydrochloric acid solution of tin tetrachloride and antimony trichloride; The hydrochloric acid solution of antimony is fully mixed to make a mixed solution of tin and antimony;

[0036] (2) Preparation of the seed crystal suspension: add 2000ml of deionized water to the reactor, measure 50ml of tin tetrachloride hydrochloric acid solution with a mass concentration of 50%, add it, heat up to 40°C, and stir under uniform mechanical stirring , add ammonia solu...

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Abstract

The invention discloses a preparation method of ATO (Antimony doped Tin Oxide) nanopowder. The ATO nanopowder is prepared by the following steps of: mixing the ethanol solution of a complexing agent and a hydrochloric acid solution of stannic chloride and antimony trichloride to prepare a tin antimony mixed solution; taking hydrochloric acid solution of stannic chloride and antimony trichloride to perform hydrolysis reaction and dispersing to form seed crystal suspension; simultaneously dropwise adding the tin antimony mixed solution and ammonia water solution into the seed crystal suspension to perform hydrolysis reaction so as to form precursor slurry; performing centrifugal washing, spray drying and baking. The prepared ATO nanopowder has the advantages of high conductivity, easiness in dispersion, short time consumption, less energy consumption, high efficiency, simple process, stable quality, low production cost, safety, environment friendliness and easiness in industrial production.

Description

Technical field: [0001] The invention relates to a method for preparing nano-ATO powder (nano-antimony-doped tin dioxide) through chemical reaction, and belongs to the technical field of nano-materials. Background technique: [0002] At present, there are many methods for the preparation of nano-ATO. The two main methods are chemical co-precipitation method and hydrothermal method. Chemical co-precipitation method is divided into oxidation co-precipitation method and complex co-precipitation method. The hydrothermal method is divided into many types due to the different raw materials used. For example, metal tin is used as raw material, dissolved in nitric acid, and after adding antimony salt, the resulting precursor undergoes oxidation reaction under high temperature and high pressure to generate ATO slurry, and then Dry and pulverize to get nano ATO powder. [0003] The above-mentioned methods all have shortcomings: the secondary particle size of the ATO powder prepared b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G19/02B82Y30/00
Inventor 赵宝勤于太春赵宝珍
Owner 烟台同立高科新材料股份有限公司
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