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Preparation method of three-dimensional hierarchical structure tin oxide microballoon composite ferric oxide nanorod gas sensitive material

A technology of iron oxide nanometer and hierarchical structure, which is applied in the direction of iron oxide, tin oxide, iron oxide/iron hydroxide, etc., and can solve the problems of gas pollution, environmental pollution, social property loss, etc.

Inactive Publication Date: 2018-12-21
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] After entering the 21st century, the rapid development of global industry has brought huge benefits to human development, but at the same time, the problem of environmental pollution has become more and more serious, especially gas pollution, which not only causes huge losses to social property, but also will pose a huge challenge to human health

Method used

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  • Preparation method of three-dimensional hierarchical structure tin oxide microballoon composite ferric oxide nanorod gas sensitive material
  • Preparation method of three-dimensional hierarchical structure tin oxide microballoon composite ferric oxide nanorod gas sensitive material
  • Preparation method of three-dimensional hierarchical structure tin oxide microballoon composite ferric oxide nanorod gas sensitive material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) First measure 60 ml of methanol into a beaker, then add a certain amount of tin tetrachloride pentahydrate and polyvinylpyrrolidone (PVP), wherein the concentration of tin tetrachloride pentahydrate is 0.014 mol / L, polyvinylpyrrolidone The concentration of (PVP) is 0.003mol / L, and the molar ratio of controlling tin tetrachloride pentahydrate and polyvinylpyrrolidone (PVP) is 4.7:1;

[0019] (2) Pour the obtained solution into a 100 ml reaction kettle and keep it warm at 160 °C for 2 h; the obtained precipitates were washed three times with deionized water and twice with absolute ethanol (in this process, an ultrasonic cleaner was used to disperse , to reduce the agglomeration of particles);

[0020] (3) Add the centrifuged product obtained in step (2) into deionized water to form a uniform tin hydroxide solution, and calculate the density of the solution for the convenience of the next step;

[0021] (4) Measure 6 ml of tin hydroxide solution (14 mg / ml) in a beaker...

Embodiment 2

[0025] (1) First measure 60 ml of methanol into a beaker, then add a certain amount of tin tetrachloride pentahydrate and polyvinylpyrrolidone (PVP), wherein the concentration of tin tetrachloride pentahydrate is 0.016 mol / L, polyvinylpyrrolidone The concentration of (PVP) is 0.0035mol / L, and the molar ratio of controlling tin tetrachloride pentahydrate and polyvinylpyrrolidone (PVP) is 4.6:1;

[0026] (2) Pour the obtained solution into a 100 ml reaction kettle and incubate at 180 °C for 3 h; the obtained precipitates were washed three times with deionized water and twice with absolute ethanol (in this process, an ultrasonic cleaner was used to disperse , to reduce the agglomeration of particles);

[0027] (3) Add the centrifuged product obtained in step (2) into deionized water to form a uniform tin hydroxide solution, and calculate the density of the solution for the convenience of the next step;

[0028](4) Measure 7 ml of tin hydroxide solution (14 mg / ml) in a beaker, ad...

Embodiment 3

[0032] (1) First measure 60 ml of methanol into a beaker, then add a certain amount of tin tetrachloride pentahydrate and polyvinylpyrrolidone (PVP), wherein the concentration of tin tetrachloride pentahydrate is 0.018 mol / L, polyvinylpyrrolidone The concentration of (PVP) is 0.004mol / L, and the molar ratio of controlling tin tetrachloride pentahydrate and polyvinylpyrrolidone (PVP) is 4.5:1;

[0033] (2) Pour the obtained solution into a 100 ml reaction kettle and incubate at 200 °C for 4 h; the obtained precipitates were washed three times with deionized water and twice with absolute ethanol (in this process, an ultrasonic cleaner was used to disperse , to reduce the agglomeration of particles);

[0034] (3) Add the centrifuged product obtained in step (2) into deionized water to form a uniform tin hydroxide solution, and calculate the density of the solution for the convenience of the next step;

[0035] (4) Measure 8 ml of tin hydroxide solution (14 mg / ml) in a beaker, ad...

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Abstract

The invention provides a preparation method of a three-dimensional hierarchical structure tin oxide microballoon composite ferric oxide nanorod gas sensitive material. The preparation method comprisesthe steps of adopting stannic chloride pentahydrate as a raw material, adopting methyl alcohol as a solvent, adopting polyvinylpyrrolidone (PVP) as a surface active agent, adopting a traditional solvothermal method, and obtaining tin hydroxide with a uniform microballoon structure; adopting ferric chloride pentahydrate as a raw material, adopting a sodium sulfide pentahydrate as a reducing agent,attaching a ferric oxide nanorod on the surface, and finally obtaining the three-dimensional hierarchical structure tin oxide microballoon composite ferric oxide nanorod gas sensitive material. The method is simple in production process, the obtained tin oxide-ferric oxide composite gas sensitive material has a hollow and hierarchical structure, the specific surface area of the material is greatly increased, and the novel gas sensitive material with high sensitivity is obtained.

Description

technical field [0001] The invention relates to a preparation method of a three-dimensional hierarchical structure tin oxide microsphere composite iron oxide nanorod gas-sensing material, and belongs to the technical field of preparation technology of advanced nano functional materials. Background technique [0002] After entering the 21st century, the rapid development of global industry has brought huge benefits to human development, but at the same time, the problem of environmental pollution has become more and more serious, especially gas pollution, which not only causes huge losses to social property, but also It will pose a huge challenge to human health. Therefore, people pay more and more attention to the detection of toxic gases. In addition, gas detection is also crucial in gas storage and restaurant detection. There are many methods for gas detection, among which semiconductor gas sensors made of metal oxides are widely used because of their high sensitivity, l...

Claims

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Application Information

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IPC IPC(8): C01G19/02C01G49/06
CPCC01G19/02C01G49/06C01P2002/72C01P2004/03C01P2004/04
Inventor 宋鹏位祺王琦杨中喜马振壬
Owner UNIV OF JINAN
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