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Tin oxide nanomaterial and preparation method thereof

A nanomaterial, tin oxide technology, applied in tin oxide and other directions, can solve the problems of gas-sensing materials to be improved, low crystallinity, etc., and achieve the effects of high crystallinity, high product yield, and easy industrialization.

Inactive Publication Date: 2011-01-12
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The tin oxide has a variety of shapes, but the crystallinity is low, and the gas sensing performance of the gas-sensing material prepared with this tin oxide also needs to be improved

Method used

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  • Tin oxide nanomaterial and preparation method thereof
  • Tin oxide nanomaterial and preparation method thereof
  • Tin oxide nanomaterial and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A. prepare the tin chloride solution of 0.05mol / L with deionized water;

[0029] B. Sodium hydroxide is dissolved in deionized water to prepare the alkali solution of 4mol / L;

[0030] C. Under stirring, slowly add the alkali solution prepared in step B dropwise to the tin chloride solution prepared in step A until the molar ratio of tin ions and hydroxide ions in the solution is 1:8, then press the mixed solution volume Weigh an equal volume of absolute ethanol and mix it with the reaction solution, and disperse it with magnetic stirring for 5 minutes; transfer the dispersed reaction solution to a hydrothermal kettle, raise the temperature to 240°C, react at constant temperature for 30 hours, and cool naturally to room temperature. The product was filtered, washed with deionized water for 5 times, and then washed with absolute ethanol for 5 times, and then dried naturally to obtain a one-dimensional tin oxide nanomaterial with good crystallinity.

[0031] The results o...

Embodiment 2

[0033] A. prepare the tin chloride solution of 0.15mol / L with deionized water;

[0034] B. Sodium hydroxide is dissolved in deionized water to prepare an alkaline solution of 6mol / L;

[0035] C. Under stirring, slowly add the alkali solution prepared in step B into the tin chloride solution prepared in step A until the molar ratio of tin ions and hydroxide ions in the solution is 1:10, and then press the mixed solution volume Weigh an equal volume of absolute ethanol and mix it with the reaction solution, and disperse it with magnetic stirring for 5 minutes; transfer the dispersed reaction solution to a hydrothermal kettle, raise the temperature to 200°C, react at constant temperature for 40 hours, and cool naturally to room temperature. The product was filtered, washed with deionized water for 5 times, and then washed with absolute ethanol for 5 times, and then dried naturally to obtain a one-dimensional tin oxide nanomaterial with good crystallinity.

[0036] Scanning elect...

Embodiment 3

[0038] A. prepare the tin chloride solution of 0.3mol / L with deionized water;

[0039] B. Potassium hydroxide is dissolved in the deionized water preparation 4mol / L alkaline solution;

[0040]C. Under stirring, slowly add the alkali solution prepared in step B into the tin chloride solution prepared in step A until the molar ratio of tin ions and hydroxide ions in the solution is 1:10, and then press the mixed solution volume Weigh an equal volume of absolute ethanol and mix it with the reaction solution, and disperse it with magnetic stirring for 5 minutes; transfer the dispersed reaction solution to a hydrothermal kettle, raise the temperature to 220°C, react at a constant temperature for 24 hours, and cool naturally to room temperature. The product is filtered, washed with deionized water for 3 to 5 times, washed with absolute ethanol for 5 times, and then dried naturally to obtain a one-dimensional tin oxide nanometer material with good crystallinity.

[0041] Scanning el...

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Abstract

The invention provides a tin oxide nanomaterial and a preparation method thereof. One-dimensional tin oxide nanomaterial with high crystallization degree and good appearance is successfully prepared by performing solvothermal synthesis on tin chloride and alkali serving as raw materials in solution of ethanol, wherein the diameter of the one-dimensional tin oxide nanomaterial is 50 to 300nm and the length is 1 to 8 mu m. Compared with the conventional method for preparing the one-dimensional tin oxide nanomaterial, the method adopted by the invention has the advantages of good appearance of the product, high crystallization degree of crystals, low industrialization cost, simple operation and high product yield. The prepared tin oxide nanomaterial has high gas sensitivity to carbon monoxide gas and is a good gas-sensitive material.

Description

[0001] Field [0002] The invention relates to a tin oxide nano material and its preparation, in particular to a tin oxide nano material and a preparation method thereof. The tin oxide nanometer material has high gas-sensing performance and is a good gas-sensing material. Background technique [0003] Ordinary tin oxide materials are often used in the pigment, glass, printing and dyeing and ceramic industries, as well as the preparation of other tin-containing compounds. In organic synthesis, tin oxide can also be used as a catalyst for oxidation of aromatic compounds. In addition, tin oxide material is the earliest commercial gas sensor material. The nanomaterials of tin oxide have been greatly developed in recent years, and the main application fields involve the preparation of sensors, semiconductor electrodes and solar cells, etc. So far, there are many reports on zero-dimensional and two-dimensional nano-tin oxide materials. One-dimensional tin oxide nanomaterials have...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G19/02
Inventor 李殿卿刘欣白守礼陈霭璠
Owner BEIJING UNIV OF CHEM TECH
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