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The preparation method of stannous sulfide nano sheet

A stannous sulfide and nanosheet technology, applied in chemical instruments and methods, nanotechnology, nanotechnology and other directions, can solve the problems of easy oxidation reaction process, low purity, low yield, etc., and achieve simple method and high sample purity. , the effect of large output

Inactive Publication Date: 2016-08-17
BOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a preparation method of stannous sulfide nanosheets, which overcomes the shortcomings of low purity, easy oxidation, complex reaction process, and low yield in the preparation process of SnS nanomaterials, and its preparation process is simple and convenient. High yield and high sample purity

Method used

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  • The preparation method of stannous sulfide nano sheet
  • The preparation method of stannous sulfide nano sheet
  • The preparation method of stannous sulfide nano sheet

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0024] Put 200-mesh tin (Sn) powder and sulfur (S) powder into the mixer at a molar ratio of 1:1 and mix evenly. Take out 4g of mixed powder, use a tablet press to press into a cylinder with a diameter of 1.8cm and a height of 0.5cm, specifically a density of 4g / cm 3 briquettes of mixed powder. Put the briquette of the pressed mixed powder into the graphite pot, and then put it into the anode in the reaction chamber of the DC arc discharge device. The anode of the DC arc discharge device is a copper pot (a graphite pot is placed in the copper pot as an anode), the cathode is a tungsten electrode, and the tungsten rod cathode is placed opposite to the anode of the copper pot. Evacuate the reaction chamber of the DC arc discharge device into a vacuum (less than 5pa), and then fill it with argon gas at 20kPa (atmospheric pressure). The copper pot is fed with circulating cooling water and starts to discharge. During the discharge process, keep the voltage at 30V, the current at...

Embodiment 2

[0027] Put the 200-mesh Sn powder and S powder into the mixer according to the molar ratio of 1:1 and mix them evenly. Take out 4g of the mixed powder, use a tablet press to briquette, and press it into a cylinder with a diameter of 1.8cm and a height of 0.5cm, specifically a briquette of the mixed powder with a density of 4.5g / cm3. Put the briquette of the pressed mixed powder into the graphite pot, and then put it into the anode in the reaction chamber of the DC arc discharge device. The anode of the arc discharge device is a copper pot (a graphite pot is placed in the copper pot as an anode), the cathode is a tungsten rod electrode, and the tungsten rod cathode is placed opposite to the anode of the copper pot. Evacuate the reaction chamber of the DC arc discharge device into a vacuum (less than 5pa), and then fill it with argon gas at 5kPa (atmospheric pressure). The copper pot is fed with circulating cooling water and starts to discharge. During the discharge process, t...

Embodiment 3

[0029] Put the 200-mesh Sn powder and S powder into the mixer according to the molar ratio of 1:1 and mix them evenly. Take out 5g of mixed powder, use a tablet press to briquette, and press it into a cylinder with a diameter of 3cm and a height of 3cm, specifically a density of 5g / cm 3 briquettes of mixed powder. Put the briquette of the pressed mixed powder into the graphite pot, and then put it into the anode in the reaction chamber of the DC arc discharge device. The anode of the arc discharge device is a copper pot (a graphite pot is placed in the copper pot as an anode), the cathode is a tungsten rod electrode, and the tungsten rod cathode is placed opposite to the anode of the copper pot. Evacuate the reaction chamber of the DC arc discharge device into a vacuum (less than 5pa), and then fill it with argon gas at 30kPa (atmospheric pressure). The copper pot is fed with circulating cooling water and starts to discharge. During the discharge process, the voltage is kept...

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Abstract

The invention discloses a preparation method of a tin sulfide nanosheet. The preparation method comprises the following steps: uniformly mixing tin powder with sulfur powder in a mole ratio of 1 to 1 and pressing the mixed powder to form a press cake with density of 4-5g / cm<3>; putting the press cake in a graphite pot and putting the graphite pot in a copper pot anode in a reaction chamber of a direct-current arc discharge device, wherein a tungsten bar cathode and the copper pot anode are placed oppositely; filling argon after vacuumizing the reaction chamber and filling a copper pot with circulating cooling water, wherein the pressure of argon is 5-30kPa; in the discharge process, maintaining the voltage at 20-40V and the current at 80-120A and reacting for 3-5 minutes; then carrying out passivation for 6-8 hours in an argon environment and collecting black powder in the graphite pot, thus obtaining the tin sulfide nanosheet. The preparation method has the advantages of simple preparation process, high yield and high sample purity.

Description

technical field [0001] The invention relates to the technical field of nanomaterial preparation, in particular to a preparation method of stannous sulfide (SnS) nanosheets. Background technique [0002] With the extensive and in-depth research on nanomaterials, it is found that nanomaterials have a large specific surface area, and the number of surface atoms, surface energy, and surface tension increase sharply with the decrease of particle size, showing small size effects, surface effects, and quantum size effects. And macroscopic quantum tunneling effect and other characteristics, resulting in the melting point, magnetic properties, electrical properties, optical properties, mechanical properties of nanomaterials are different from traditional materials. [0003] Nanosheet structure materials are called 2-dimensional materials because their thickness is much smaller than their lateral dimensions, so they have unique optical, electrical, magnetic, and catalytic properties, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G19/00B82Y30/00B82Y40/00
Inventor 王秋实吴志颖陆晓东吕航张伟张丽娜李文军
Owner BOHAI UNIV
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