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Stable nano antimony-doped tin dioxide hydrosol and preparation method thereof

A technology of tin dioxide and hydrosol, which is applied in the direction of tin oxide, etc., can solve the problems of poor stability and light transmission, and achieve the effect of simple preparation process and reduced product cost

Inactive Publication Date: 2015-09-23
TIANJIN VOCATIONAL INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a stable nano-antimony-doped tin dioxide hydrosol with salicylic acid and long-chain quaternary ammonium salts as stabilizers, which overcomes the stability and light transmission performance of existing nano-antimony-doped tin dioxide hydrosol products bad question

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Dissolve 247g (0.95mol) of tin tetrachloride (0.95mol) and 11.4g (0.05mol) of antimony trichloride in 3600g of deionized water, and a white precipitate will appear immediately; add about 680g of ammonia water with a concentration of 10% by mass under stirring, Precipitation is continuously produced until the pH of the reaction system is 2-3; the precipitate is vacuum filtered, and the precipitate is washed with 150g deionized water to make the hydrated SnO 2 / Sb 2 o 3 Most of the ammonium chloride salt entrained in the precipitate was washed and removed; the hydrated SnO 2 / Sb 2 o 3 The precipitate was dispersed in 3500g deionized water to obtain SnO 2 / Sb 2 o 3 Add 100g of strong basic anion exchange resin to the suspension with a concentration of 4% by mass, stir vigorously for 0.5-1.0 hours, test with silver nitrate solution, so that chloride ions can be completely exchanged and removed, and then use a 100-mesh filter to separate and remove anions Exchange...

Embodiment 2

[0036] Dissolve 234g (0.90mol) of tin tetrachloride (0.90mol) and 22.8g (0.10mol) of antimony trichloride in 3500g of deionized water, and a white precipitate will appear immediately; add about 650g of ammonia water with a mass percentage concentration of 10% under stirring, Precipitation is continuously produced until the pH of the reaction system is 2-3; the precipitate is vacuum filtered, and the precipitate is washed with 150g deionized water to make the hydrated SnO 2 / Sb 2 o 3 Most of the ammonium chloride salt entrained in the precipitate was washed and removed; the hydrated SnO 2 / Sb 2 o 3 The precipitate was dispersed in 7000g deionized water to obtain SnO 2 / Sb 2 o 3 Add 100g of strong basic anion exchange resin to the suspension with a concentration of 2% by mass, stir vigorously for 0.5-1.0 hours, test with silver nitrate solution, so that chloride ions can be completely exchanged and removed, and then use a 100-mesh filter to separate and remove anions ...

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Abstract

The invention discloses stable nano antimony-doped tin dioxide (ATO) hydrosol which is composed of 3-5 percent of nano ATO particles with the average particle size of 10-20 nm, 0.2-2 percent of salicylic acid, 0.005-0.1 percent of long-chain quaternary ammonium salt and deionized water. A preparation process comprises the following steps: carrying out alkali hydrolysis on a tin tetrachloride and antimony trichloride aqueous solution to generate hydration SnO2 / Sb2O3 precipitates, dispersing in deionized water, removing mixed chloridion ions through strong-basicity ion exchange resin, peptizing the precipitates by salicylic acid at 60-70 DEG C, carrying out hydrothermal treatment to form the antimony-doped tin dioxide hydrosol, crystallizing for separating free salicylic acid, and adding a long-chain quaternary ammonium salt stabilizer to enable the long-chain quaternary ammonium salt stabilizer to react with salicylic acid in the hydrosol, so as to enable the hydrosol to be viscosified and stabilized.

Description

technical field [0001] The invention relates to a stable nano-antimony-doped tin dioxide aqueous sol and a preparation method thereof, in particular to a stable nano-antimony-doped tin dioxide with good light transmission performance using salicylic acid and a long-chain quaternary ammonium salt as stabilizers The hydrosol and its preparation method belong to the field of inorganic chemical industry and new materials. technical background [0002] Antimony-doped tin oxide (ATO) nanomaterial is a new type of functional conductive material. In addition to good electrical conductivity, it also has good antireflection, anti-radiation, infrared absorption functions, and good weather resistance and chemical stability. It is widely used in the fields of solar cells, photoelectric display devices, antistatic chemical fibers, antistatic coatings, and infrared absorption and heat insulation materials. Nano-antimony-doped tin dioxide (ATO) materials include nano-ATO powder and nano-AT...

Claims

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Application Information

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IPC IPC(8): C01G19/02C03C17/23
Inventor 李建生李无为
Owner TIANJIN VOCATIONAL INST
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