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Molybdenum disulfide-black phosphorene composite material in no 2 Applications in Gas Sensor Devices

A gas sensor, molybdenum disulfide technology, applied in the direction of material resistance, material analysis, material analysis by electromagnetic means, etc., can solve the problem of low detection limit, achieve the effect of reducing production cost, uniform size and high yield

Active Publication Date: 2021-05-28
咸阳瞪羚谷新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to overcome the shortcoming that the detection limit of molybdenum disulfide is too low when applied to gas sensors, and provide molybdenum disulfide-black phosphorene composite materials in NO 2 Applications in Gas Sensor Devices

Method used

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  • Molybdenum disulfide-black phosphorene composite material in no <sub>2</sub> Applications in Gas Sensor Devices
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  • Molybdenum disulfide-black phosphorene composite material in no <sub>2</sub> Applications in Gas Sensor Devices

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Embodiment 1

[0038] 1) The present invention adopts the electrochemical method to strip and prepare black phosphorus nanosheets, and the specific operation is as follows:

[0039] The platinum wire was used as the positive electrode, and the black phosphorus block material was used as the negative electrode, and a voltage of 10 V was provided by a DC power supply for 10 minutes; the electrolyte solution was dimethyl sulfoxide solution in which 0.01 M tetramethylammonium tetrafluoroborate was dissolved.

[0040] 2) The spongy black phosphorus obtained after electrochemical stripping was crushed in a cell crusher for 5 min, with a power of 300W, and the working time and rest time were 5 s, respectively.

[0041] 3) The ultrasonicated black phosphorus nanosheets were cleaned by centrifugation at 10000 rpm for 10 min, collected and dried in a vacuum oven at 60 °C to obtain black phosphorus nanosheets.

[0042] 4) Disperse 10 mg of black phosphorus nanosheets in 30 mL of dimethylformamide, add ...

Embodiment 2

[0052] 1) In the two-phase electrolyzer device, the platinum wire is used as the positive electrode, and the black phosphorus block material is used as the negative electrode, and a voltage of 8 V is provided by a DC power supply and kept for 20 min; the solution used is dissolved 0.03 M ammonium tetramethyltetrafluoroborate dimethyl sulfoxide solution.

[0053] 2) The spongy black phosphorus obtained after electrochemical stripping was crushed in a cell crusher for 6 minutes with a power of 250W, and the working time and rest time were 4 s, respectively.

[0054] 3) The ultrasonicated black phosphorus nanosheets were cleaned by centrifugation at 11000 rpm for 10 min, collected and dried in a vacuum oven at 60 °C to obtain black phosphorus nanosheets.

[0055] 4) Disperse 30 mg of black phosphorus nanosheets in 40 mL of dimethylformamide, add 20 mg of ammonium tetrathiomolybdate, stir for 1 h, then sonicate for 1 h, transfer the mixed solution to polytetrafluoroethylene for re...

Embodiment 3

[0059] 1) The platinum wire was used as the positive electrode, and the black phosphorus block material was used as the negative electrode. A voltage of 20 V was provided by a DC power supply and kept for 5 min. The solution used was dimethyl sulfoxide solution in which 0.05 M tetramethylammonium tetrafluoroborate was dissolved.

[0060] 2) The spongy black phosphorus obtained after electrochemical stripping was crushed in a cell crusher for 4 min, with a power of 200W, and the working time and rest time were 6 s, respectively.

[0061] 3) The ultrasonicated black phosphorus nanosheets were cleaned by centrifugation at 12000 rpm for 8 minutes, collected and dried in a vacuum oven at 60°C to obtain black phosphorus nanosheets.

[0062] 4) Disperse 50 mg of black phosphorus nanosheets in 50 mL of dimethylformamide, add 10 mg of ammonium tetrathiomolybdate, stir for 1 h, then sonicate for 1 h, transfer the mixed solution to polytetrafluoroethylene for reaction In the kettle, the ...

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Abstract

The invention discloses a molybdenum disulfide-black phosphorene composite material, a preparation method and its application in NO 2 The application in gas sensor devices belongs to the field of material preparation. A preparation method of molybdenum disulfide-black phosphorene composite material, comprising the following steps: 1) dispersing black phosphorus nanosheets in dimethylformamide, and adding ammonium tetrathiomolybdate to obtain a reaction solution; 2) After the reaction liquid is poured into the reaction kettle, a solvothermal reaction is carried out, and the obtained reaction product is purified and dried to obtain a molybdenum disulfide-black phosphorene composite material. The molybdenum disulfide-black phosphorene composite material prepared by the preparation method of the invention has stable structure and uniform appearance. Invented molybdenum disulfide-black phosphorene composite as a gas-sensing material in NO 2 Application in gas sensor, able to detect ppb level NO at room temperature 2 With obvious response and good selectivity, it has great application prospects in the field of gas sensing.

Description

technical field [0001] The invention belongs to the field of material preparation, especially molybdenum disulfide-black phosphorene composite material, preparation method and its preparation in NO 2 Applications in gas sensing devices. Background technique [0002] In recent years, environmental issues, especially atmospheric environmental issues, have become the most concerned hot issues in the world. The rapid development of modern industry has caused serious damage to the living environment of human beings, especially the emission of harmful gases has caused an indelible impact on the atmospheric environment. , has seriously threatened human health and survival. [0003] There is a large amount of NO in industrial waste gas and automobile exhaust 2 , NO 2 It is a gas that is extremely harmful to the human body. Real-time monitoring can help control NO 2 To provide timely and effective support for the emission of NO, in view of this, the development and research of lo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/12
CPCG01N27/127
Inventor 戴正飞梁婷婷张鹏飞张旭马飞
Owner 咸阳瞪羚谷新材料科技有限公司
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