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Preparation method of self-assembled spherical tin dioxide from nano fragments

A technology of tin dioxide and self-assembly, applied in tin oxide, nanotechnology, nanotechnology, etc., can solve the problems of difficult tin dioxide morphology, complicated operation, high energy consumption, etc. Simple, even-grained effects

Active Publication Date: 2016-03-23
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing preparation methods have problems such as complicated operation, high cost, and high energy consumption. Some methods need to add surfactants, etc., and some methods are difficult to control the morphology of tin dioxide.

Method used

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  • Preparation method of self-assembled spherical tin dioxide from nano fragments
  • Preparation method of self-assembled spherical tin dioxide from nano fragments
  • Preparation method of self-assembled spherical tin dioxide from nano fragments

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A method for preparing spherical tin dioxide self-assembled by nano-fragments, comprising the steps of:

[0023] (1) Dissolve 3g of tin tetrachloride in 50ml of ethanol, after fully dissolved, add 1.5g of terephthalic acid, then add 0.20~0.30ml of 40% hydrofluoric acid, continue stirring for 30min to fully mix ;

[0024] (2) Transfer the mixed solution obtained in step (1) into the reactor, and react at a constant temperature of 220°C for 13 hours;

[0025] (3) After the reaction kettle is cooled, the sample is taken out, and the product is obtained after centrifugation, washing and drying.

Embodiment 2

[0027] A method for preparing spherical tin dioxide self-assembled by nano-fragments, comprising the steps of:

[0028] (1) Dissolve 3.8g of tin tetrachloride in 50ml of ethanol, after fully dissolved, add 1.2g of terephthalic acid, then add 0.30~0.50ml of hydrofluoric acid with a concentration of 40%, and continue stirring for 30min to fully mix;

[0029] (2) Transfer the mixed solution obtained in step (1) into the reactor, and react at a constant temperature of 220°C for 13 hours;

[0030] (3) After the reaction kettle is cooled, the sample is taken out, and the product is obtained after centrifugation, washing and drying.

Embodiment 3

[0032] A method for preparing spherical tin dioxide self-assembled by nano-fragments, comprising the steps of:

[0033] (1) Dissolve 3.5g of tin tetrachloride in 55ml of ethanol. After fully dissolving, add 2g of terephthalic acid, then add 2ml of acetic acid with a concentration of 99.8%, and continue to stir for 30 minutes to fully mix;

[0034] (2) Transfer the mixed solution obtained in step (1) into the reactor, and react at a constant temperature of 220°C for 12 hours;

[0035] (3) After the reaction kettle is cooled, the sample is taken out, and the product is obtained after centrifugation, washing and drying.

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Abstract

The present invention relates to the preparation of tin dioxide, specifically a method for preparing spherical tin dioxide self-assembled from nano fragments, comprising the following steps: (1), dissolving 3-4g of tin tetrachloride in 50-55ml of ethanol, After fully dissolving, add 1~2g of terephthalic acid, then add hydrofluoric acid or hydrochloric acid or formic acid or acetic acid, and continue stirring to mix thoroughly; (2), transfer the mixed solution obtained in step (1) into the reaction kettle , react at a constant temperature of 220°C for 12 to 14 hours; (3) After the reactor is cooled, take out the sample, and after centrifugation, washing and drying, the product is obtained. The above method has simple preparation process, convenient operation, and easy control of process parameters; the spherical tin dioxide self-assembled by nano fragments has uniform particle size and high dispersion, and can be used for gas-sensitive detection of low-concentration volatile organic compounds.

Description

technical field [0001] The invention relates to the preparation of tin dioxide, in particular to a method for preparing spherical tin dioxide self-assembled from nano fragments. Background technique [0002] Tin dioxide is an important inorganic material and a promising semiconductor material, widely used in ceramics, photocatalysis, photoelectric catalysis and gas sensing and other fields. [0003] The production of tin dioxide in my country has a long history, and the traditional nitric acid production process is adopted. That is, tin is dissolved in nitric acid to generate metastannic acid, and after repeated washing, drying, calcining, and crushing, yellow tin dioxide is obtained. This method consumes a lot of nitric acid, causes serious environmental pollution, high tin consumption, low product purity, and poor color. To high-end goods requirements. Therefore, tin dioxide still depends on imports. [0004] At present, the preparation of nano-tin oxides with different...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G19/02B82Y30/00
CPCC01G19/02C01P2002/72C01P2004/03C01P2004/62
Inventor 杜建平赵瑞花杨江峰李晋平
Owner TAIYUAN UNIV OF TECH