Caesium and antimony co-doped stannic oxide nano powder and preparation method of dispersion solution thereof

A nano-powder, co-doping technology, used in tin oxide, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of low conductivity and infrared absorption efficiency, uneven doping of tin dioxide, etc., and achieve particle size. Small, high degree of monodispersity, high infrared absorption rate

Inactive Publication Date: 2019-03-08
奈蓝(上海)新材料科技有限公司
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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 method for preparing cesium-antimony co-doped oxides by in-situ doping and co-hydrolysis for the defects of non-uniform doping of tin dioxide doped with nano-antimony, low conductivity and infrared absorption efficiency. Novel Preparation Method of Tin Nano Powder and Its Dispersion

Method used

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  • Caesium and antimony co-doped stannic oxide nano powder and preparation method of dispersion solution thereof

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Experimental program
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Effect test

Embodiment 1

[0019] 1) According to the formula, add tin tetrachloride pentahydrate and antimony trichloride to the hydrochloric acid solution and stir evenly, then add cesium carbonate and the two-component chelating agent to the hydrochloric acid and stir evenly. The mass ratio of tin tetrachloride pentahydrate to antimony trichloride is 1:0.5, the mass of cesium carbonate is 5% of tin tetrachloride pentahydrate, and the two-component chelating agent is ethylenediaminetetraacetic acid and diethylene The content of the chelating agent is 5% of the total mass of tin tetrachloride pentahydrate, the molar ratio of the two chelating agents is 1:1, and the concentration of hydrochloric acid is 2mol / L;

[0020] 2) Drop ammonia into the solution prepared in step 1 to obtain a precipitate and stir to complete the reaction. Pour out and vacuum filter, the obtained precipitate is repeatedly washed with deionized water, then washed with absolute ethanol, dried, and finely ground. The ammonia concentra...

Embodiment 2

[0024] 1) According to the formula, add tin tetrachloride pentahydrate and antimony trichloride to the hydrochloric acid solution and stir evenly, then add cesium carbonate and the two-component chelating agent to the hydrochloric acid and stir evenly. The mass ratio of tin tetrachloride pentahydrate to antimony trichloride is 1:1, the mass of cesium carbonate is 10% of tin tetrachloride pentahydrate, and the two-component chelating agent is tartaric acid and hydrolyzed polymaleic anhydride. The content of the mixture is 0.2% of the total mass of tin tetrachloride pentahydrate, the molar ratio of the two chelating agents is 1:1, and the concentration of hydrochloric acid is 1 mol / L;

[0025] 2) Drop ammonia into the solution prepared in step 1 to obtain a precipitate and stir to complete the reaction. Pour out and vacuum filter, the obtained precipitate is repeatedly washed with deionized water, then washed with absolute ethanol, dried, and finely ground. The concentration of am...

Embodiment 3

[0029] 1) According to the formula, add tin tetrachloride pentahydrate and antimony trichloride to the hydrochloric acid solution and stir evenly, then add cesium carbonate and the two-component chelating agent to the hydrochloric acid and stir evenly. The mass ratio of tin tetrachloride pentahydrate to antimony trichloride is 1:0.7, the mass of cesium carbonate is 1% of tin tetrachloride pentahydrate, and the two-component chelating agent is hydroxyethyl ethylene diamine triacetic acid and Polymethacrylic acid, the content of the chelating agent is 3% of the total mass of tin tetrachloride pentahydrate, the molar ratio of the two chelating agents is 1:1, and the concentration of hydrochloric acid is 3mol / L;

[0030] 2) Drop ammonia into the solution prepared in step 1 to obtain a precipitate and stir to complete the reaction. Pour out and vacuum filter, the obtained precipitate is repeatedly washed with deionized water, then washed with absolute ethanol, dried, and finely ground...

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Abstract

The invention relates to a method for preparing caesium and antimony co-doped stannic oxide nano powder and a dispersion solution thereof by using an in-situ doped cohydrolysis method. The method comprises the specific operating steps: weighing stannic tetrachloride pentahydrate, trichloroantimony, cesium carbonate and a double component chelating agent and adding the mixture into a hydrochloric acid solution and uniformly stirring the solution; dropwise adding ammonia water into the solution to obtain a precipitate, and stirring the solution to react fully; pouring the precipitate and carrying out vacuum suction filtration, washing the precipitate with deionized water repeatedly, drying the precipitate and grinding the precipitate; sintering the powder in an air atmosphere at a special temperature for a while to obtain the powder which is the caesium and antimony co-doped stannic oxide nano powder; and adding the prepared nano powder into a nano grinding machine, and adding a solventand a dispersing agent and controlling the grinding conditions to prepare the nano dispersion solution finally. The caesium and antimony co-doped stannic oxide nano powder and the dispersion solutionthereof prepared by the method are small in grain size, high in monodispersed degree, high in conducting efficiency and high in infrared absorptivity, so that the using effect of the powder is improved greatly.

Description

Technical field [0001] The invention belongs to the field of nano powder preparation, and in particular relates to a novel preparation method of tin oxide nano powder co-doped with cesium and antimony and its dispersion. Background technique [0002] Tin dioxide is an important semiconductor sensor, and it has good permeability to visible light, excellent chemical stability in aqueous solution, and has specific conductivity and reflect infrared radiation characteristics, so it is used in lithium batteries, Solar cells, liquid crystal displays, optoelectronic devices, transparent conductive electrodes, infrared detection protection and other fields are also widely used. However, its conductivity and stability are not good enough, which limits its application. In order to improve its conductivity and stability, it is often doped and used. [0003] Antimony-doped tin dioxide is a new type of functional conductive material that has developed rapidly in recent years. It has specific op...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G19/02C01G19/00
CPCC01G19/02C01G19/006C01P2002/72
Inventor 张春明钟伟汪元元
Owner 奈蓝(上海)新材料科技有限公司
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