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Triethylamine sensor based on MoO3 nano sensitive material as well as preparation method and application thereof

A sensitive material, triethylamine technology, applied in the direction of material resistance, can solve the problems of poor selectivity and other applications, and achieve the effects of good stability, strong reliability, and simple steps in the preparation method

Inactive Publication Date: 2018-09-07
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this disadvantage of poor selectivity under more complex environmental conditions may limit their application

Method used

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  • Triethylamine sensor based on MoO3 nano sensitive material as well as preparation method and application thereof
  • Triethylamine sensor based on MoO3 nano sensitive material as well as preparation method and application thereof
  • Triethylamine sensor based on MoO3 nano sensitive material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] With MoO 3 Nanosheets are used as sensitive materials to make side-heated triethylamine sensors. The specific manufacturing process:

[0034] First add 0.087g (NH 4 ) 6 Mo 7 o 24 4H 2 O was dissolved in 30 mL deionized water. After stirring for 20min, 3mL PEG-400 and 3mL concentrated HNO 3 (65%) was dripped into the above solution drop by drop, and continued to stir for 20min;

[0035] 2. Put the above solution into a 50mL hydrothermal kettle, then put it into a hydrothermal oven, and set the oven parameters to 180°C for 24h;

[0036] 3. After the reaction is finished, the obtained product is alternately centrifuged and washed with water and ethanol. The centrifuge parameter is set as 10000r / min, 10min. After centrifugation the product was dried. After drying, the product was calcined at 500° C. for 2 h.

[0037] 4. Take an appropriate amount of prepared nanomaterials and ethanol and mix them uniformly at a mass ratio of 0.3 mg:1 mg to form a slurry. Dip an ...

Embodiment 2

[0042] With MoO 3 Nanosheets are used as sensitive materials to make side-heated triethylamine sensors. The specific manufacturing process:

[0043] First add 0.087g (NH 4 ) 6 Mo 7 o 24 4H 2 O was dissolved in 30 mL deionized water. After stirring for 20min, 3mL PEG-400 and 3mL concentrated HNO 3 (65%) was dripped into the above solution drop by drop, and continued to stir for 20min;

[0044] 2. Put the above solution into a 50mL hydrothermal kettle, then put it into a hydrothermal oven, and set the oven parameters to 180°C for 24h;

[0045] 3. After the reaction is finished, the obtained product is alternately centrifuged and washed with water and ethanol. The centrifuge parameter is set as 10000r / min, 10min. After centrifugation the product was dried. After drying, the product was calcined at 500° C. for 2 h.

[0046] 4. Take an appropriate amount of prepared nanomaterials and ethanol and mix them uniformly at a mass ratio of 0.3 mg:1 mg to form a slurry. Dip an ...

Embodiment 3

[0051] With MoO 3 Nanosheets are used as sensitive materials to make side-heated triethylamine sensors. The specific manufacturing process:

[0052] First add 0.087g (NH 4 ) 6 Mo 7 o 24 4H 2 O was dissolved in 30 mL deionized water. After stirring for 20min, 3mL PEG-400 and 3mL concentrated HNO 3 (65%) was dripped into the above solution drop by drop, and continued to stir for 20min;

[0053] 2. Put the above solution into a 50mL hydrothermal kettle, then put it into a hydrothermal oven, and set the oven parameters to 180°C for 24h;

[0054] 3. After the reaction is finished, the obtained product is alternately centrifuged and washed with water and ethanol. The centrifuge parameter is set as 10000r / min, 10min. After centrifugation the product was dried. After drying, the product was calcined at 500° C. for 2 h.

[0055] 4. Take an appropriate amount of prepared nanomaterials and ethanol and mix them uniformly at a mass ratio of 0.3 mg:1 mg to form a slurry. Dip an ...

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Abstract

The invention relates to a triethylamine sensor based on a MoO3 nano sensitive material as well as a preparation method and application thereof in detecting triethylamine gas in a complicated environment, which belongs to the technical field of semiconductor oxide gas sensors. The sensor is of a heater-type structure and consists of a Al2O3 ceramic tube substrate with two parallel annular and independent gold electrodes on the outer surface, a MoO3 nano sensitive material smeared on the outer surface of a ceramic tube and the gold electrodes and a nickel-cadmium heating coil arranged in the ceramic tube. By utilizing the rapid responsive restoration and excellent selectivity of the MoO3 nanosheet sensitive material which is simple in preparation and uniform in size for the triethylamine, the triethylamine sensor with high performance is developed, the detection performance in a complicated environment is good, and the application prospect is good.

Description

technical field [0001] The invention belongs to the technical field of semiconductor oxide gas sensors, in particular to a sensor based on MoO 3 A triethylamine sensor of a nano-sensitive material, a preparation method and its application in detecting triethylamine gas in a complex environment. Background technique [0002] With the development of information technology, sensors, as a means of obtaining information, are at the forefront of information technology development and will receive extensive attention and further commercial production. In recent years, air pollution has been increasing, industrial and household safety accidents have occurred frequently, and there is an urgent need in food safety, medical and health, chemical energy, military, aerospace and other industries. Therefore, it is of great significance to discover new gas sensors to detect polluting gases. [0003] Triethylamine (TEA) is a volatile organic compound (VOC), which is widely used as a cataly...

Claims

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Application Information

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IPC IPC(8): G01N27/04G01N27/12
CPCG01N27/04G01N27/12
Inventor 姜文豪揣晓红卢革宇孙鹏刘方猛闫旭刘凤敏梁喜双高原
Owner JILIN UNIV
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