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Preparation method of molybdenum disulfide nanotubes

A technology of molybdenum disulfide and nanotubes, which is applied in the field of semiconductor nanotube preparation, can solve problems such as uncontrollable size of molybdenum sulfide nanotubes, influence of electronic applications, complex chemical reactions, etc., and is conducive to large-scale industrial production and widely used Strong applicability and size controllability

Active Publication Date: 2018-05-22
FOSHAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above existing reports, in the preparation of MoS 2 The process of nanotubes involves complex chemical reactions, the operation is difficult, and the size of the obtained molybdenum sulfide nanotubes is uncontrollable, which has a great impact on its electronic applications.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A preparation method for molybdenum disulfide nanotubes, comprising the following processing steps:

[0019] 1) Spread 5g of molybdenum hexacarbonyl on the bottom of a ceramic crucible, place a porous anodized aluminum template with a pore diameter of 40nm downwards on top of the molybdenum hexacarbonyl, seal the crucible and place it in a vacuum tube furnace, and feed in 100 SCCM of nitrogen Purge air from furnace tubes. Under the protection of nitrogen at 100SCCM, raise the temperature to 100°C and keep it for 60 minutes, then continue to raise the temperature to 300°C and keep it for 40 minutes to get molybdenum metal deposition, stop heating;

[0020] 2) After the vacuum tube furnace in step 1) is lowered to room temperature, take out the porous anodized aluminum template, place its opening downwards in a ceramic crucible filled with sulfur powder, seal the crucible and place it in a vacuum tube furnace. Under the protection of 100SCCM nitrogen, raise the temperatu...

Embodiment 2

[0023] A preparation method for molybdenum disulfide nanotubes, comprising the following processing steps:

[0024] 1) Spread 5g of molybdenum hexacarbonyl on the bottom of a ceramic crucible, place a porous anodized aluminum template with a pore size of 10nm downwards on top of the molybdenum hexacarbonyl, seal the crucible and place it in a vacuum tube furnace, and inject 100 SCCM of nitrogen Purge air from furnace tubes. Under the protection of nitrogen at 100SCCM, raise the temperature to 50°C and keep it for 200 minutes, then continue to raise the temperature to 300°C and keep it for 40 minutes to obtain metal molybdenum deposition, stop heating;

[0025] 2) After the vacuum tube furnace in step 1) is lowered to room temperature, take out the porous anodized aluminum template, place its opening downwards in a ceramic crucible filled with sulfur powder, seal the crucible and place it in a vacuum tube furnace. Under the protection of 100SCCM nitrogen, raise the temperature...

Embodiment 3

[0028] A preparation method for molybdenum disulfide nanotubes, comprising the following processing steps:

[0029] 1) Spread 5g of molybdenum hexacarbonyl on the bottom of a ceramic crucible, place a porous anodized aluminum template with a pore diameter of 40nm downwards on top of the molybdenum hexacarbonyl, seal the crucible and place it in a vacuum tube furnace, and feed in 100 SCCM of nitrogen Purge air from furnace tubes. Under the protection of nitrogen at 100SCCM, raise the temperature to 150°C and keep it for 30 minutes, then continue to raise the temperature to 300°C and keep it for 40 minutes to get metal molybdenum deposition, stop heating;

[0030] 2) After the vacuum tube furnace in step 1) is lowered to room temperature, take out the porous anodized aluminum template, place its opening downwards in a ceramic crucible filled with sulfur powder, seal the crucible and place it in a vacuum tube furnace. Under the protection of 100SCCM nitrogen, raise the temperatu...

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Abstract

The invention discloses a preparation method of molybdenum disulfide nanotubes. The preparation method comprises the following technological steps: 1) paving molybdenum hexacarbonyl on the bottom of aceramic crucible; then putting a porous anodic aluminum oxide template above the molybdenum hexacarbonyl in a manner of placing an opening of the porous anodic aluminum oxide template downward; aftersealing the crucible, putting the crucible into a tubular furnace; under gas protection, sublimating and depositing at low temperature and pyrolyzing at high temperature; then cooling; 2) after cooling the vacuum tubular furnace to room temperature, putting the template into the ceramic crucible filled with sulfur powder in the manner of placing the opening of the template downward; after sealingthe crucible, raising the temperature under the gas protection, so as to enable monomer sulfur and metal molybdenum to directly react; 3) removing the porous aluminum oxide template by adopting a diluted acid solution and removing surplus sulfur by utilizing carbon disulfide; then carrying out suction filtration treatment and drying to obtain a finished product. The method disclosed by the invention has simple steps and no environment pollution and does not need complicated equipment; a prepared molybdenum disulfide nanotube powder material has strong size controllability and good crystallization performance; the nanotubes have a shape and uniform tube wall, so that the comprehensive performance of a molybdenum disulfide nanotube powder material finished product is greatly improved. The molybdenum disulfide nanotubes disclosed by the invention have wide applicability and large-scale industrial production is facilitated.

Description

technical field [0001] The invention relates to the field of semiconductor nanomaterials, in particular to a method for preparing semiconductor nanotubes. Background technique [0002] Molybdenum disulfide (MoS 2 ) crystal has a layered hexagonal close-packed structure, the layers are bound by strong covalent bonds, and the layers are weaker van der Waals force, which is easy to slide along the close-packed surface, and has good anisotropy and Low friction coefficient, and the sulfur element exposed on the crystal surface has a strong adhesion to the metal to form a very strong film, so that molybdenum disulfide can be well attached to the metal surface and always play a lubricating function, excellent lubricating performance Compared with graphite, especially under high temperature, high vacuum and other conditions, it still has a low friction coefficient. It has diamagnetism, can be used as a linear photoconductor and a semiconductor showing P-type or N-type conductivity...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G39/06B82Y40/00
CPCB82Y40/00C01G39/06C01P2004/13
Inventor 胡柱东林海敏
Owner FOSHAN UNIVERSITY
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