Method for preparing monodisperse antimony-doped tin oxide nano-powder

A technology of antimony-doped tin oxide and nanopowder, which is applied in the direction of tin oxide and nanotechnology, which can solve the problems of wide particle size distribution and easy agglomeration, and achieve the effects of reducing agglomeration, increasing dispersion and preventing hydrolysis

Inactive Publication Date: 2014-01-22
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved in the present invention is to provide a method for preparing monodisperse antimony-doped tin oxide nanopowder, so as to overcome the disadvantages of easy agglomeration and wide particle size distribution in the preparation of existing nanomaterial co-precipitation method

Method used

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  • Method for preparing monodisperse antimony-doped tin oxide nano-powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Step 1 Weigh 1g of citric acid and dissolve in 500mL of deionized water, add ethylene glycol to form a solution; add 10.26gSbCl 3 Dissolve in the above mixed solution, then add 52.59g SnCl while stirring 4 ·5H 2 O, finally weigh 0.6g of urea and add it to the solution under constant temperature stirring.

[0035] Step 2 Heat the mixed solution oil bath obtained in Step 1 to 90° C., heat it for 5 hours with strong magnetic stirring, and let it stand for 20 hours after precipitation is formed.

[0036] Step 3 Use a Buchner funnel to suction filter the product of step 2 standing still, wash it with distilled water 5 times during suction filtration, and add a small amount of 0.05mol / L dilute nitric acid solution dropwise, adjust the pH to 3, and then wash with absolute ethanol 4 times, get light yellow precursor;

[0037] In step 4, the light yellow precursor filter cake obtained in step 3 is placed in a vacuum drying oven at 90°C for 24 hours, taken out and ground, and heat-treat...

Embodiment 2

[0041] Step 1 Weigh 1g of tartaric acid and dissolve it in 500mL of deionized water, add ethylene glycol to form a mixed solution; add 3.42g of SbCl 3 Dissolve in the above mixed solution, then add 52.59g SnCl while stirring 4 ·5H 2 O, finally weigh 0.6g of urea and add it to the solution under constant temperature stirring.

[0042] Step 2 Heat the mixed solution oil bath obtained in Step 1 to 90° C., heat it for 5 hours with strong magnetic stirring, and let it stand for 12 hours after precipitation is formed.

[0043] Step 3 Use a Buchner funnel to suction filter the product of step 2 standing still, wash with distilled water 4 times during suction filtration, and add a small amount of 0.02mol / L dilute nitric acid solution dropwise, adjust the pH to 3, and then wash with absolute ethanol 3 times, get light yellow precursor;

[0044] In step 4, the light yellow precursor filter cake obtained in step 3 is placed in a vacuum drying oven at 90°C for 48 hours, taken out and ground, and...

Embodiment 3

[0046] Step 1 Weigh 1g of citric acid and dissolve it in 500mL of deionized water, add ethylene glycol to form a solution; add 17.11gSbCl 3 Dissolve in the above mixed solution, then add 52.59g SnCl while stirring 4 ·5H 2 O, finally weigh 0.8g of urea into the solution under constant temperature stirring conditions.

[0047] Step 2 Heat the mixed solution oil bath obtained in Step 1 to 90° C., heat it for 5 hours with strong magnetic stirring, and let it stand for 24 hours after precipitation is formed.

[0048] Step 3 Use a Buchner funnel to suction filter the product of step 2 standing still, wash it with distilled water 3 times during suction filtration, and add a small amount of 0.04mol / L dilute nitric acid solution dropwise, adjust the pH to 3, and then wash with absolute ethanol 2 times, get light yellow precursor;

[0049] In step 4, the light yellow precursor filter cake obtained in step 3 is placed in a vacuum drying oven at 90°C for 48h, taken out and ground, and heat-treat...

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Abstract

The invention relates to method for preparing monodisperse antimony-doped tin oxide nano-powder. The method comprises the following main steps: preparing a precursor under a certain reaction condition; stewing the precursor, washing, filtering and drying a filter cake; grinding and calcining, thereby finally obtaining the nano-powder. The method has the characteristics that a mixed solution of antimonic salt, tin salt, a compounding agent and a dispersing agent is adopted to react; a precipitator is finally added. Thus, the prepared powder is good in dispersity, less in agglomeration, complete in crystallization, and small in particle size distribution; the particle size of the powder is 12-17nm; meanwhile, the preparation method is simple and convenient to prepare, simple in technology, low in cost, short in reaction period, and easy for realization industrial production.

Description

Technical field [0001] The invention belongs to the technical field of antimony doped tin oxide nanomaterials, and specifically relates to a preparation method of monodisperse antimony doped tin oxide nano powder. Background technique [0002] SnO 2 It is a non-stoichiometric broadband semiconductor produced by oxygen vacancies. After doping with elements such as F and Sb, the conductivity is improved by several orders of magnitude to form an n-type semiconductor. Among them, antimony doped tin oxide (ATO) has excellent electrical and optical properties. As an antistatic material, powder is widely used in coatings, building materials, chemical fiber, papermaking, etc., showing greater superiority than other antistatic materials (such as graphite, surfactants, metal powder). Nano ATO powder also has good reflection, anti-radiation, infrared absorption and other functions, and can be used in the fields of low emissivity glass for construction and infrared absorption heat insulatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G19/02B82Y40/00
Inventor 刘宝春杨星琦李娟李婷
Owner NANJING UNIV OF TECH
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