Antimony tin oxide/vanadium dioxide composite nanomaterial and preparation method thereof

A composite nanomaterial and vanadium dioxide technology, applied in the field of antimony tin oxide/vanadium dioxide composite nanomaterials and their preparation, can solve problems such as poor weather resistance, achieve excellent weather resistance, prolong service life, eliminate temperature gradient and concentration The effect of segregation

Pending Publication Date: 2022-02-08
CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem of poor weather resistance of vanadium dioxide in the prior art when used in buildings such as glass doors

Method used

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preparation example Construction

[0029] The present invention at first provides a kind of preparation method of antimony tin oxide / vanadium dioxide composite nano material, comprises the following steps:

[0030] a. Synthesis of vanadium dioxide doped powder: Mix the vanadium dioxide precursor solution with precipitant and dopant, then carry out microwave hydrothermal reaction, and obtain the obtained precipitate after filtering, washing and drying. Wherein, the molar ratio of the vanadium dioxide precursor solution to the precipitating agent is 1:1-40, and the dopant is added in an atomic percentage of 1-10 at%. The vanadium dioxide precursor solution is at least one of vanadyl acetate, vanadyl sulfate, vanadyl dichloride and vanadyl oxalate solutions. The precipitating agent is at least one of sodium hydroxide, ammonia water, sodium carbonate, ammonium carbonate, and ammonium bicarbonate. The doping element of the dopant is at least one of molybdenum, tungsten, fluorine, niobium, lanthanum, bismuth and man...

Embodiment 1

[0038] Prepare vanadium dioxide doped powder, prepare vanadyl sulfate solution with a concentration of 0.5M, add ammonium carbonate as a precipitant according to the molar ratio of vanadyl sulfate and precipitant ammonium carbonate at 1:10, and add it according to the atomic percentage of 6at%. After the dopant ammonium tungstate is fully dissolved, microwave hydrothermal reaction is carried out at a temperature of 200°C for 2 hours, and the precipitate obtained from the reaction is filtered, washed and dried to form the doped vanadium dioxide powder.

[0039]Take 1g of vanadium dioxide-doped powder, disperse it in 200mL of mixed precursor solution of tin tetrachloride pentahydrate and antimony trichloride, the molar ratio of tin and antimony is 1:0.1, add precipitant, and then mix the solution Add it into the digestion tank, set the microwave heating temperature to 200°C, and the reaction time is 1h. After the reaction is completed, cool to room temperature, filter to obtain t...

Embodiment 2

[0041] Prepare vanadium dioxide-doped powder, prepare vanadyl oxalate solution with a concentration of 0.7M, add ammonium carbonate as a precipitant according to a molar ratio of 1:10, and add a dopant ammonium tungstate according to an atomic percentage of 6at%. After fully dissolving, Microwave hydrothermal reaction is carried out at a temperature of 200° C. for 2 hours. The precipitate obtained from the reaction is filtered, washed and dried, which is the doped vanadium dioxide powder.

[0042] Take 3g of vanadium dioxide-doped powder and disperse it in 200mL of the mixed precursor solution of tin tetrachloride pentahydrate and antimony trichloride. The molar ratio of tin to antimony is 1:0.5. Put into the digestion tank, set the microwave heating temperature to 250°C, and the reaction time is 1h. After the reaction is completed, cool to room temperature, filter to obtain the precipitate, alternately wash with ethanol and deionized water for 3 times, and vacuum dry at 60°C f...

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Abstract

The invention belongs to the technical field of functional material preparation, and particularly relates to an antimony tin oxide/vanadium dioxide composite nanomaterial and a preparation method thereof. The antimony tin oxide/vanadium dioxide composite nanomaterial and the preparation method thereof aim at solving the problem that in the prior art, vanadium dioxide is poor in weather resistance when used as glass doors and windows and other buildings. The antimony tin oxide/vanadium dioxide composite nanomaterial is prepared by the following steps: firstly, synthesizing vanadium dioxide doped powder; and then dispersing the vanadium dioxide doped powder in a mixed precursor liquid of tin tetrachloride pentahydrate and antimony trichloride, adding a precipitant, carrying out microwave heating, and filtering, washing and drying the precipitate to obtain the material. The prepared antimony tin oxide/vanadium dioxide composite nanomaterial takes vanadium dioxide nanoparticles as a core and antimony tin oxide nanoparticles as a shell as a protective layer so that the antimony tin oxide/vanadium dioxide composite nanomaterial not only has good visible light permeability, but also has more excellent weather resistance.

Description

technical field [0001] The invention belongs to the technical field of preparation of functional materials, and in particular relates to an antimony tin oxide / vanadium dioxide composite nanomaterial and a preparation method thereof. Background technique [0002] According to statistics, my country's building energy consumption accounts for about 30% of the total energy consumption of the society, and reducing building energy consumption is of great significance for realizing energy conservation and emission reduction. With today's society's requirements for architectural beauty and lighting, glass doors and windows account for a large proportion of building structures. Glass doors and windows are the main channels for heat exchange between buildings and the outside world. Therefore, research on energy-saving technologies for glass doors and windows is the key to reducing building energy consumption. For this reason, scientists have proposed the concept of thermochromic smar...

Claims

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Application Information

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IPC IPC(8): C01G31/02C01G30/00C01G19/02B82Y30/00B82Y40/00
CPCC01G31/02C01G19/02C01G30/005B82Y30/00B82Y40/00C01P2004/82C01P2004/64C01P2004/62
Inventor 文俊维刘波姚洁唐敏
Owner CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD
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