A kind of indium antimony tin oxide nanopowder and preparation method thereof

An indium-antimony tin oxide and nano-powder technology is applied in chemical instruments and methods, nanotechnology, nanotechnology, etc., and can solve the problems of inconsistent solubility of different metal salts and their hydrolyzed products, complex preparation processes, difficult to enlarge, and large differences in solubility. and other problems, to achieve easy industrial production, improve the problem of easy agglomeration, and achieve the effect of less powder agglomeration

Active Publication Date: 2018-11-02
广东拓扑中润科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, a binary system is usually used to produce TCOs materials. In the binary system, in order to solve the problem of inconsistent solubility of different metal salts and their hydrolyzates and to control the size of the powder, the method usually adopted is double dropwise addition and pH control. value, but this preparation process is complex and difficult to scale up, and the preparation cost is high. In addition, when using the ternary system to produce TCOs materials, because the ternary system has more substances than the binary system, the difference in solubility is greater, and at the same time Satisfying the solubility changes of three metal salts and three hydroxides is also a big problem

Method used

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  • A kind of indium antimony tin oxide nanopowder and preparation method thereof
  • A kind of indium antimony tin oxide nanopowder and preparation method thereof
  • A kind of indium antimony tin oxide nanopowder and preparation method thereof

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Embodiment 1

[0030] A preparation method of indium antimony tin oxide nanopowder, comprising the steps of:

[0031] (1) Mix antimony salt, tin salt and indium salt and dissolve in acidic solution to obtain solution A; dissolve alkaline precipitant and surfactant in deionized water in turn to obtain solution B;

[0032] (2) Add solution A to solution B under stirring, after the reaction is completed, age to obtain solution C;

[0033] (3) Centrifuge the solution C, and wash, dry, grind and sinter the separated precipitate to obtain indium-antimony-doped tin oxide nanopowder.

[0034] In the step (1), the surfactant is sodium dodecylbenzenesulfonate.

[0035] In the step (1), the molar ratio of antimony salt, tin salt and indium salt is 15:1:1, and the antimony salt is SbF 5 , the tin salt is SnCl 4 ·5H 2 O, the indium salt is InCl 3 4H 2 O.

[0036] In the step (1), the acidic solution is citric acid with a concentration of 1.8mol / L; the alkaline precipitating agent is a weakly alkal...

Embodiment 2

[0043] The difference between this embodiment and embodiment 1 is:

[0044] In the step (1), the surfactant is stearic acid.

[0045] In the step (1), the molar ratio of antimony salt, tin salt and indium salt is 16:2:1, and the antimony salt is SbF 3 , the tin salt is SnCl 2 , the indium salt is In(NO 3 ) 3 .

[0046] In the step (1), the acidic solution is oxalic acid with a concentration of 1.9mol / L; the alkaline precipitant is a weakly alkaline precipitant, and the weakly alkaline precipitant is urea, the amount of urea It is 3 times of the total substance amount of the anions of antimony salt, tin salt and indium salt.

[0047] In the step (1), the process of sequentially dissolving the alkaline precipitating agent and the surfactant in the deionized water is carried out under heating, and the heating temperature is 78°C.

[0048] In the step (2), the solution A is dropped into the solution B through a constant pressure dropping funnel, and this process is carried o...

Embodiment 3

[0053] The difference between this embodiment and embodiment 1 and 2 is:

[0054] In the step (1), the surfactant is compounded by sodium dodecylbenzenesulfonate, sodium dodecylsulfate and sodium dioctylsuccinatesulfonate in a weight ratio of 2.2:1.5:1.

[0055] In the step (1), the molar ratio of antimony salt, tin salt and indium salt is 17:3:1, and the antimony salt is SbCl 3 and SbCl 5 Compounded according to the molar ratio of 1:1, the tin salt is SnCl 4 ·5H 2 O, SnCl 2 Compounded according to the molar ratio of 1:1, the indium salt is InCl 3 4H 2 O and InCl 2 It is formulated according to the molar ratio of 2:1.

[0056] In the step (1), the acidic solution is compounded with citric acid and tartaric acid at a volume ratio of 1:2, and the concentration of the acidic solution is 2mol / L; the alkaline precipitating agent is weakly alkaline precipitation agent, the weakly basic precipitating agent is urea, and the amount of urea is 4 times of the total amount of anio...

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Abstract

The invention relates to the technical field of transparent heat-insulating conductive nanometer materials and particularly relates to antimony-indium-doped tin oxide nano-powder and a preparation method thereof. The preparation method comprises (1) mixing an antimony salt, a tin salt and an indium salt, dissolving the mixture in an acid solution to obtain a solution A, and orderly dissolving an alkaline precipitant and a surfactant in deionized water to obtain a solution B, (2) adding the solution A into the solution B along with stirring, and after the reaction, carrying out aging to obtain a solution C, (3) centrifuging the solution C and washing, drying, grinding and sintering the precipitates to obtain the antimony-indium-doped tin oxide nano-powder. The preparation method has simple processes, is safe, utilizes mild reaction conditions, realizes a low preparation cost, realizes industrial production and greatly solves the problem of easy agglomeration of nano-powder in production. The antimony-indium-doped tin oxide nano-powder has small particle sizes and narrow particle size distribution, reduces agglomeration and has wide application values.

Description

technical field [0001] The invention relates to the technical field of transparent heat-insulating and conductive nano-materials, in particular to an indium-antimony-doped tin oxide nano-powder and a preparation method thereof. Background technique [0002] Antimony-doped tin oxide, tin-doped indium oxide, and indium-antimony-doped tin oxide are all N-type semiconductor materials. The nano-scale powder of this kind of material has specific optical and electrical properties, and is a new type of multifunctional transparent conductive material (Transparent Conductive Oxides) with great development potential. This material is usually called TCOs material. TCOs materials have good transmittance in the visible wavelength range and are also conductive. Therefore, TCOs films and coatings are widely used in high-tech fields, and they have stronger advantages than traditional conductive materials and antistatic materials. TCOs materials have high electrical conductivity. When added...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G30/00B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01G30/005C01P2002/72C01P2002/82C01P2002/84C01P2004/03C01P2004/64C01P2004/82
Inventor 孙仲毅
Owner 广东拓扑中润科技发展有限公司
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