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Method for preparing antimony-doped tin oxide (ATO) nano powder

A technology of antimony-doped tin oxide and nano-powder, which is applied in the field of nano-materials, can solve the problems of general effect and unfavorable popularization and application, and achieve the effects of less agglomeration, simple process and small particle size distribution range

Inactive Publication Date: 2011-04-13
DALIAN JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The application of supercritical fluid drying technology is affected by the complexity of equipment, which is not conducive to popularization and application. Although the non-homogeneous nucleation method can reduce agglomeration and improve dispersion, the effect is general

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  • Method for preparing antimony-doped tin oxide (ATO) nano powder
  • Method for preparing antimony-doped tin oxide (ATO) nano powder

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Weigh 11.87g of metal tin particles, measure 40ml of 7.5mol / L nitric acid, 50ml of 6mol / L hydrochloric acid, and react at 80°C for 30 minutes to dissolve the metal tin to obtain a tin ion solution. Weigh 1.2 g of antimony trichloride and dissolve it with 10 ml of concentrated hydrochloric acid to obtain an antimony ion solution. Weigh 0.6 g of polyvinyl alcohol and dissolve it with 100 mL of deionized water to obtain a polyvinyl alcohol solution. Mix the tin ion solution and the antimony ion solution to obtain a mixed solution, add the mixed solution and 13mol / L ammonia solution dropwise to the polyvinyl alcohol solution at the same time, control the reaction temperature at 65°C, and stir for 1 hour to obtain a light yellow colloid Precipitate the precursor, let the precursor stand for 24 hours and then filter. The filter cake obtained by filtration is rinsed with deionized water for 5 times and then with absolute ethanol for 2 times. Two drying methods are selected, o...

Embodiment 2

[0030]Weigh 11.87g of metal tin particles, measure 45ml of 6mol / L nitric acid, 40ml of 8mol / L hydrochloric acid, and react at 80°C for 30 minutes to dissolve the metal tin to obtain a tin ion solution. Weigh 4.8 g of antimony trichloride and dissolve it with 30 ml of concentrated hydrochloric acid to obtain an antimony ion solution. Weigh 0.6 g of polyvinyl alcohol and dissolve it with 100 mL of deionized water to obtain a polyvinyl alcohol solution. Mix the tin ion solution and the antimony ion solution to obtain a mixed solution, add the mixed solution and 13mol / L ammonia solution dropwise to the polyvinyl alcohol solution at the same time, control the reaction temperature at 65 degrees Celsius, stir for 1 hour to obtain a light yellow colloid Precipitate the precursor, let the precursor stand for 24 hours and then filter. The filter cake obtained by filtering was rinsed three times with deionized water and then rinsed once with absolute ethanol. The filter cake was wrapped...

Embodiment 3

[0032] Weigh 11.87g of metal tin particles, measure 45ml of 6mol / L nitric acid, 40ml of 8mol / L hydrochloric acid, and react at 80°C for 30 minutes to dissolve the metal tin to obtain a tin ion solution. Weigh 3.6 g of antimony trichloride and dissolve it with 25 ml of concentrated hydrochloric acid to obtain an antimony ion solution. Weigh 0.6 g of polyvinyl alcohol and dissolve it with 100 mL of deionized water to obtain a polyvinyl alcohol solution. Mix the tin ion solution and the antimony ion solution to obtain a mixed solution, add the mixed solution and 13mol / L ammonia solution dropwise to the polyvinyl alcohol solution at the same time, control the reaction temperature at 65 degrees Celsius, stir for 1 hour to obtain a light yellow colloid Precipitate the precursor, let the precursor stand for 24 hours and then filter. The filter cake obtained by filtering was rinsed 4 times with deionized water and then rinsed 2 times with absolute ethanol. The filter cake was wrapped...

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Abstract

The invention discloses a method for preparing antimony-doped tin oxide (ATO) nano powder, which comprises the following steps of: preparing a precursor under the certain reaction condition; and standing, filtering, eluting, coating, drying, grinding, screening and burning the precursor to obtain ATO nano powder. A coating and drying way is introduced into the preparation process of the powder for the first time, and the obtained ATO nano powder has high dispersibility and less agglomeration; the appearance of the powder is spherical or similarly spherical, and the powder has the grain diameter of 5-10nm, small distributing range of the grain diameter, the resistivity of 1-5ohm.cm and the bulk density of 0.4-1.5g.cm<-3>; and compared with a direct drying way without coating treatment, theinvention obviously improves the dispersibility of the powder and reduces the bulk density of the power by half or so. Meanwhile, the invention has the obvious characteristics of simple process, low cost, short reaction period, high yield, easy control of the reaction process and convenience for industrialized mass production.

Description

technical field [0001] The invention relates to the field of nanomaterials, in particular to a method for preparing antimony-doped tin oxide (ATO) nanopowder with gas-sensing performance and photoelectric performance. Background technique [0002] Antimony-doped tin oxide, that is, ATO is an important gas-sensitive material, conductive antistatic material, catalyst and catalyst carrier material. Compared with traditional metal conductive antistatic materials, ATO materials have better chemical stability and weather resistance. Well, compared with carbon black and carbon nanotubes, it has the advantage of lighter color; in addition, the conductivity of ATO materials is higher than that of polymer conductive antistatic materials. Therefore, the application of ATO nanopowder in the field of conductive antistatic has attracted more and more attention. Dispersing ATO nanopowders into insulating plastics or resins to reduce the resistivity of composite materials is a main directi...

Claims

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Application Information

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IPC IPC(8): C04B35/457C04B35/626B82Y40/00
Inventor 柴卫平刘世民
Owner DALIAN JIAOTONG UNIVERSITY
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