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Preparation method of high-concentration MoS2 nanosheet

A nanosheet, high-concentration technology, applied in the field of preparation of high-concentration MoS2 nanosheets, can solve problems such as limiting applications

Inactive Publication Date: 2019-09-06
南京倍格电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Since the discovery of graphene materials in 2004, due to its novel optical properties and unique electrical characteristics, it has attracted widespread attention and research from scientists all over the world. However, graphene is a zero-band gap metallic material, which limits its use in electronic Applications in the field of devices

Method used

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  • Preparation method of high-concentration MoS2 nanosheet

Examples

Experimental program
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Effect test

Embodiment 1

[0043] A high concentration MoS 2 The method for preparing nanosheets specifically includes the following steps: Step S1: adding 5 g of molybdenum disulfide single crystal blocks with a particle size of 10-30 μm and a purity greater than 99.95% into a closed ultrasonic bottle with a blue cap, and then pouring Add 20% ethanol and 80% water mixed solvent 325ml into the ultrasonic bottle to form a solution system;

[0044] Step S2: performing argon or nitrogen bubbling treatment on the solution system in the blue cap ultrasonic bottle, and the bubbling treatment adopts the prior art;

[0045] Step S3: Put the blue cap ultrasonic bottle into the ultrasonic cleaning machine for ultrasonic treatment. The ultrasonic conditions are: ultrasonic power is 320W, ultrasonic time is 40min; during ultrasonic treatment, ice cubes are added to the ultrasonic cleaning machine to create a low-temperature environment and serve as an ice bath Cooling effect, get dark green MoS2 nanosheet dispersion...

Embodiment 2

[0052] The difference between this example and Example 1 is that in step S1: 5g of molybdenum disulfide single crystal block with a particle size of 10-30 μm and a purity greater than 99.95% is added to a closed ultrasonic bottle with a blue cap, and then The volume fraction of 20% ethanol and 80% water mixed solvent 350ml was added to the ultrasonic bottle with blue cap to form a solution system; others were the same as in Example 1.

Embodiment 3

[0054] The difference between this example and Example 1 is that in step S1: 5g of molybdenum disulfide single crystal block with a particle size of 10-30 μm and a purity greater than 99.95% is added to a closed ultrasonic bottle with a blue cap, and then The volume fraction of 20% ethanol and 80% water mixed solvent 500ml was added to the ultrasonic bottle with blue cap to form a solution system; others were the same as in Example 1.

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Abstract

The invention discloses a preparation method of a high-concentration MoS2 nanosheet, and belongs to the technical field of biological nanomaterials. The preparation method specifically comprises the following steps that S1, a certain amount of molybdenum disulfide polycrystalline powder or a certain number of molybdenum disulfide single crystal blocks are added into an airtight blue-cap ultrasonicbottle, then a certain quantity of a polar solvent is added into the blue-cap ultrasonic bottle, and a solution system is formed; S2, the solution system in the blue-cap ultrasonic bottle is subjected to inert gas bubbling treatment; S3, the blue-cap ultrasonic bottle is placed in an ultrasonic cleaning machine for ultrasonic treatment, ice blocks are added into the ultrasonic cleaning machine during ultrasonic treatment to create a low temperature environment and have an ice-bath cooling effect, and a dark green MoS2 nanosheet dispersion solution is obtained; S4, the dark green MoS2 nanosheet dispersion solution is separated. According to the preparation method, the high-concentration MoS2 nanosheet is prepared by utilizing the dispersity between the solvent and a solute and selecting anultrasonic stripping method, and the nanosheet dispersion solution which has a high stripping ratio and high stability and maintains the block semiconductor properties is obtained.

Description

technical field [0001] The invention belongs to the technical field of bionano materials, in particular to a method for preparing high-concentration MoS2 nanosheets. Background technique [0002] Since the discovery of graphene materials in 2004, due to its novel optical properties and unique electrical characteristics, it has attracted widespread attention and research from scientists all over the world. However, graphene is a zero-band gap metallic material, which limits its use in electronic Applications in the field of devices. Therefore, it is urgent to find a two-dimensional material with a band gap structure. As a new representative of two-dimensional materials, the inorganic transition metal sulfide (TMDS) material not only has a graphene-like planar structure and molecular layer thickness, but also has a direct semiconductor band. gap, and its novel photoelectric, catalytic, and thermoelectric properties have great application potential in the fields of optoelectro...

Claims

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Application Information

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IPC IPC(8): C01G39/06B82Y40/00
CPCB82Y40/00C01G39/06C01P2004/24
Inventor 蒋连福董文英
Owner 南京倍格电子科技有限公司
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