Platinum-tin oxide nanofiber membrane sensitive to methane

A nanofiber film and tin dioxide technology, applied in the field of gas sensor, can solve the problems of methane sensor gas sensor performance without smooth and continuous methane response, complex preparation method, low application value, etc., to achieve good application value and prospect, preparation The effect of simple process and low cost

Inactive Publication Date: 2016-12-07
CHINA UNIV OF PETROLEUM (EAST CHINA)
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AI Technical Summary

Problems solved by technology

Obviously, the preparation method of the above-mentioned tin dioxide-based methane sensor is complicated and expensive, and the gas sensing performance of the obtained methane sensor does not have a smooth and continuous methane response below 200 ° C, and the practical application value is low.

Method used

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  • Platinum-tin oxide nanofiber membrane sensitive to methane
  • Platinum-tin oxide nanofiber membrane sensitive to methane
  • Platinum-tin oxide nanofiber membrane sensitive to methane

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Example 1, 0.4 gram of tin protochloride dihydrate and an appropriate amount of chloroplatinic acid are added to the mixed solution of 4.42 gram of dimethylformamide and 4.42 gram of absolute ethanol (0mol%, 10mol%, 20mol%, 30mol% % four doping concentrations), the mixed solution was magnetically stirred for 30 minutes, then 0.8 g of polyvinylpyrrolidone was added thereto, and then stirred for 12 hours to obtain a clear and transparent electrospinning precursor solution. Use a 5 ml syringe to measure a certain amount of electrospinning precursor solution for spinning. Set the bolus injection speed to 0.137 mm / min, the syringe uses a 21-gauge needle, and the distance between the needle and the receiver is about 19 cm. The forward voltage of the DC high-voltage power supply is 20 kV, the negative voltage is 2 kV, and the spinning time is 3 hours. The obtained nanofibers were dried in a drying oven at 40° C. for 24 hours, and then placed in a tube furnace for calcination ...

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Abstract

The invention provides a method for preparing a platinum-tin oxide sensor membrane capable of being used for methane detection, and belongs to the technical field of gas sensors. Dehydrate stannous chloride and chloroplatinic acid are mixed, a platinum-tin oxide material is prepared through the electrostatic spinning method, then the platinum-tin oxide material is prepared into the membrane through the screen printing method, the sample can stably detect 600-10000 ppm methane at the test temperature of 100 DEG C, and 50 ppm methane can be stably detected at the test temperature of 300 DEG C. The method is easy and convenient to use in the operation process, preparation cost is low, repeatability is good, and the obtained material is excellent in performance and has high application value and good prospects.

Description

technical field [0001] The invention belongs to the technical field of gas-sensitive sensors, and in particular relates to the preparation of a platinum-tin dioxide nanofiber membrane and the research on its gas-sensing performance to methane. Background technique [0002] With the continuous improvement of people's living standards, natural gas has gradually replaced traditional gas and entered thousands of households, bringing great convenience to people's lives. However, the main component of natural gas, methane, is flammable and explosive, and once leaked, it will cause great harm. In recent years, fire and explosion accidents caused by household gas leakage have increased year by year, and real-time monitoring of methane concentration will greatly reduce the occurrence of such accidents. Therefore, developing a methane sensor with excellent performance has great practical application value. [0003] At present, the means of detecting methane mainly include catalytic ...

Claims

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Application Information

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IPC IPC(8): G01N27/12B82Y30/00B82Y40/00
CPCG01N27/127B82Y30/00B82Y40/00
Inventor 薛庆忠鲁文博熊雅丁德恭
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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