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Preparation method of molybdenum disulfide nanosheet

A technology of nano-sheets and molybdenum disulfide, applied in the fields of chemistry and materials, can solve problems that are not conducive to the preparation and application of molybdenum disulfide, randomness, or high requirements for reaction conditions, and achieve high repeatability, low cost, and simple process Effect

Inactive Publication Date: 2019-09-17
张家港钛光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

Compared with the relatively perfect method for preparing planar molybdenum disulfide, these methods have great randomness or high requirements for reaction conditions, which is not conducive to the preparation and application of molybdenum disulfide with high specific surface area.

Method used

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  • Preparation method of molybdenum disulfide nanosheet
  • Preparation method of molybdenum disulfide nanosheet
  • Preparation method of molybdenum disulfide nanosheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 2

[0073] Embodiment 1 molybdenum disulfide nano flake material sample 1 # preparation of

[0074] Will figure 1 and figure 2 The gallium nitride substrate with nanopillars shown in the figure was put into a beaker, and 40mL of hydrochloric acid was added to the beaker, the beaker was sealed, and the beaker was placed in an ultrasonic cleaner and cleaned for 10 minutes at a power of 40W; Wash with absolute ethanol for 10 minutes at a power of 40W; finally take it out, dry the absolute ethanol on the surface of the gallium nitride substrate with nanopillars, and place it face up on the filter paper.

[0075] Put 0.1g of molybdenum trioxide powder in a quartz boat with a height of 2cm, and use a silicon wafer with a thickness of 1 micron to image 3 The gallium nitride substrate with nanopillars is set up in a well shape, the substrate is face down, and it is put into the tube furnace from the right side. Put 1g of sulfur powder in another quartz boat with a height of 2cm, and...

Embodiment 2 2

[0077] Embodiment 2 molybdenum disulfide nano flake material sample 2 # preparation of

[0078] The present embodiment keeps the same preparation conditions as in Example 1, except that:

[0079] The amount of raw materials is: 0.1g molybdenum trioxide, 0.8g sulfur powder; the gallium nitride substrate with nanopillars is facing up; the nitrogen flow rate is adjusted to 100 sccm; a glass sheet with a thickness of 5 microns is used as a gasket; the sulfur powder is heated to 150°C, heat molybdenum trioxide to 810°C; the prepared molybdenum disulfide nanosheet material is denoted as 2 # sample.

Embodiment 3 2

[0080] The characterization of embodiment 3 molybdenum disulfide nano-flake material sample

[0081] with 1 # The sample is typical, and the scanning electron microscope, Raman spectrum and fluorescence spectrum were tested for molybdenum disulfide.

[0082] Figure 5 for sample 1 # Scanning electron micrograph of molybdenum disulfide nanosheets, as can be seen from the figure, sample 1 # The molybdenum disulfide is a dense vertical sheet of nano-flakes, the size of which is 180-1000nm in height and 0.8-50nm in thickness; the density of nano-flakes is 1-10 pieces per square micron.

[0083] Figure 6 is 1 # The Raman spectrum of the sample molybdenum disulfide nano-flakes. It can be seen from the figure that the peak position difference between the two Raman peaks of the molybdenum disulfide flakes is about 26cm -1 .

[0084] Figure 7 is 1 # The fluorescence spectrum of the sample molybdenum disulfide nano-flakes. It can be seen from the figure that the fluorescence ...

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Abstract

The application discloses a preparation method of a molybdenum disulfide nanosheet. The preparation method is characterized by adopting chemical vapor deposition; a high and low double-temperature-zone heating method is used in the chemical vapor deposition; a molybdenum source and a sulfur source are used as raw materials of the chemical vapor deposition; the molybdenum source is positioned in the downwind direction of the sulfur source, and a substrate is positioned in the downwind direction of the molybdenum source; the substrate is provided with nanorods. After the method is adopted, not only can the horizontal molybdenum disulfide nanosheet grow on the plane substrate, but the vertical molybdenum disulfide nanosheet can also grow on the substrate with the nanorods; the material directly grows on the substrate without needing pressure, so that a short time is consumed, the cost is low, and the process is simple and convenient; the molybdenum disulfide nanosheet can grow densely on a large scale, and is high in repeatability.

Description

technical field [0001] The application relates to a preparation method of molybdenum disulfide nano-flakes, in particular to a preparation method of a dense vertical flaky molybdenum disulfide nano-flake material, which belongs to the fields of materials and chemistry. Background technique [0002] As a graphene-like two-dimensional material, the van der Waals force between molybdenum disulfide layers is much weaker than the sulfur-molybdenum bond in molybdenum disulfide, so it is easy to produce single-layer molybdenum disulfide and molybdenum disulfide layered nanosheets. Molybdenum disulfide has good mechanical, optical, electrical and catalytic properties, and has broad application prospects in solar cells, photodetectors, field effect transistors and chemical catalysis. [0003] Compared with the inner part, the edge part of MoS2 nanosheets has significantly enhanced catalytic performance. On the same area, the upwardly extending spatial structure will have more surfac...

Claims

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Application Information

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IPC IPC(8): C01G39/06B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01G39/06C01P2002/82C01P2004/03C01P2004/20
Inventor 江峰闫鹏飞
Owner 张家港钛光新材料科技有限公司
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