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Tin disulfide-black phosphorus composite material as well as preparation method and application thereof

A composite material and tin disulfide technology, applied in chemical instruments and methods, tin compounds, phosphorus compounds, etc., can solve the problems of ppb-level gas detection and high working temperature, and achieve large-scale production and application, combined stability, The effect of reducing production costs

Active Publication Date: 2020-06-09
咸阳瞪羚谷新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of tin disulfide applied to gas sensors that the working temperature is too high and the detection of ppb level gas cannot be realized, and to provide a tin disulfide-black phosphorus composite material, a preparation method and its application

Method used

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  • Tin disulfide-black phosphorus composite material as well as preparation method and application thereof
  • Tin disulfide-black phosphorus composite material as well as preparation method and application thereof
  • Tin disulfide-black phosphorus composite material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] 1) The present invention adopts electrochemical method to peel off and prepare black phosphorus nanosheet, concrete operation is as follows:

[0045] The platinum wire is used as the counter electrode, and the black phosphorus block material is used as the working electrode to form a two-phase working circuit. The voltage of 10V is provided through the electrochemical workstation and kept for 30 minutes; the electrolyte is dimethyl sulfoxide dissolved in tetramethylammonium tetrafluoroborate Solution, every 50mL of dimethyl sulfoxide is added with 300mg of tetramethylammonium tetrafluoroborate; the black phosphorus block expands into a sponge.

[0046] 2) Disperse the spongy black phosphorus in the cell crusher, set the time to 7min, the power to 270W, and the working time and rest time to be 5s respectively.

[0047] 3) Centrifuge the dispersed black phosphorus nanosheets at a rotational speed of 2000 rpm for 5 minutes, and then take the suspension above it to remove t...

Embodiment 2

[0062] 1) In the two-phase electrolyzer device, the platinum wire is used as the counter electrode, and the black phosphorus block material is used as the working electrode, and the voltage of 15V is provided through the electrochemical workstation and kept for 15min; the electrolyte used is dissolved tetramethyl ammonium tetrafluoroborate dimethyl sulfoxide solution, 100 mg of tetramethylammonium tetrafluoroborate was added to every 30 mL of dimethyl sulfoxide.

[0063] 2) The spongy black phosphorus obtained after electrochemical stripping was crushed in a cell crusher for 6 minutes with a power of 240W, and the working time and resting time were 4s respectively.

[0064] 3) Centrifuge the dispersed black phosphorus nanosheets at a rotation speed of 1500 rpm for 8 minutes, and then take the suspension above it.

[0065] 4) The suspension dispersed with black phosphorus nanosheets was centrifuged and washed in absolute ethanol at a rotation speed of 10000 rpm for 8 minutes, c...

Embodiment 3

[0070]1) Use the platinum wire as the positive electrode and the black phosphorus block material as the negative electrode in the two-phase electrolyzer device, use the platinum wire as the counter electrode, and the black phosphorus block material as the working electrode, provide 25V voltage through the electrochemical workstation, and keep it for 10min The block black phosphorus expands into a spongy shape, and the electrolyte used is a dimethyl sulfoxide solution containing tetramethylammonium tetrafluoroborate, and 200mg of tetramethylammonium tetrafluoroborate is added to every 40mL of dimethyl sulfoxide.

[0071] 2) Disperse the spongy black phosphorus in the cell crusher, set the time to 10min, the power to 210W, and the working time and rest time to be 3s respectively.

[0072] 3) Centrifuge the dispersed black phosphorus nanosheets at a rotation speed of 1800 rpm for 6 minutes, and then take the suspension above it.

[0073] 4) The ultrasonicated black phosphorus nan...

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Abstract

The invention discloses a tin disulfide-black phosphorus composite material as well as a preparation method and an application thereof, which belong to the field of material preparation. The preparation method of the tin disulfide-black phosphorus composite material comprises the following steps: 1) dispersing black phosphorus nanosheets into absolute ethyl alcohol, and sequentially adding tin tetrachloride pentahydrate and cysteine to obtain a precursor solution; and 2) transferring the precursor to a polytetrafluoroethylene reaction kettle, carrying out a solvothermal reaction, and carryingout centrifugal cleaning and drying on the obtained reaction product to obtain the tin disulfide-black phosphorus composite material. The tin disulfide-black phosphorus composite material prepared bythe preparation method disclosed by the invention is uniform in morphology and stable in performance. The tin sulfide-black phosphorus composite material is applied to an NO2 gas sensor as a gas sensitive material, has obvious and rapid response and good selectivity to ppb-grade NO2 at room temperature, and has a great application prospect in the field of gas sensing.

Description

technical field [0001] The invention belongs to the field of material preparation, in particular to a tin disulfide-black phosphorus composite material, a preparation method and an application thereof. Background technique [0002] In recent years, the problem of air pollution has become increasingly serious, which has attracted widespread international attention. The rapid development of science and technology and industry is accompanied by a large amount of harmful gas emissions, which has caused extremely serious adverse effects on the atmospheric environment and has gradually threatened the living environment of human beings. [0003] NO 2 It is a harmful gas with high content in industrial waste gas and automobile exhaust. In order to improve the atmospheric environment and control the emission of harmful gases, the NO 2 Real-time monitoring of emissions is crucial for regulating gas emissions. Based on this, the development of NO 2 Gas sensors that can respond qui...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G19/00C01B25/00G01N27/12
CPCC01B25/003C01G19/00C01P2002/70C01P2002/72C01P2002/82C01P2002/85C01P2004/03C01P2004/04G01N27/12G01N27/127
Inventor 戴正飞梁婷婷张旭张鹏飞
Owner 咸阳瞪羚谷新材料科技有限公司
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